Rodrigo Carlo Toloi
IFMT Rondonópolis/UNIP, Brazil
E-mail: toloirodrigo@gmail.com
Alexandra Cristina Ramos da Silva Lopes Gunes
FEUP, Portugal
E-mail: aslopes@letras.up.pt
Marley Nunes Vituri Toloi
IFMT Rondonópolis/UNIP, Brazil
E-mail: Marley.toloi@gmail.com
João Gilberto Mendes dos Reis
UNIP, Brazil
E-mail: betomendesreis@msn.com
Silvia Helena Bonilla
UNIP, Brazil
E-mail: shbonilla@hotmail.com
Moacir de Freitas Junior
FATEC ZS/UNIP, Brazil
E-mail: bicimo@uol.com.br
Submission: 29/03/2018
Accept: 29/03/2018
ABSTRACT
This
study aimed to identify how the main variables that are influenced by the
anthropic activity resulting from the soybean production in the Mato Grosso
Municipalities cluster among themselves. Factor analysis method was used to
identify underlying dimensions that can account for the shared variation of
observed variables. The factorial analysis proposes to reduce the number of
variables by the extraction of independent factors, so that a better
explanation of the relationship between the original variables occurs, avoiding
correlational problems and reducing the relevance of endogeneity. Three dimensions
were identified, each with a different combination of variables. Based on the
results from principal components modelling it is fair to state that the
impacts of the anthropic activity resulting from soybean production in the Mato
Grosso municipalities can be analyzed according to three main domains:
production impacts, socioeconomic impacts and demographic impacts. The main
contribution of this paper is that it offers a useful framework of analysis for
both public and private decision-makers regarding the influence of soybean
production on economic, social, environmental, and cultural factors.
Keywords: Anthropic Activity of Soybean;
Multivariate Statistical Analysis; Environmental; Social; Economic Factors
1. INTRODUCTION
The
improvement of public policies for the production and export of Agribusiness
Commodities was driven by the increase in demand for soybeans, mainly to
produce oil for human consumption and animal feed meal.
According
to data from the Foreign Agricultural Service (FAS) of the United States
Department of Agriculture (USDA), China, the United States, Brazil, Argentina,
and the European Union consumed in the 2015/16 crop the amount of 408.8 million
tons of soybean (Grains, Bran, and Oil), of which China consumed 30.6% followed
by the United States (17.3%) and Brazil (12%) (FAS/USDA, 2016).
China
stands out as the world's largest soybean importer, in the 2015/16 crop, Brazil
collaborates with more than 63% of the soybeans destined for the Chinese
market. The Chinese demand for soybeans meets the domestic consumption of
soybean oil and soybean meal. It is estimated that in the next decade, the
volume of 57.2 million tons of soybeans will be imported, which is equivalent
to 56.1% of world grain imports (FAS/USDA, 2016).
In
this scenario, Brazil has consolidated its position as the second largest
producer and the world's largest exporter of soybeans. As of the 2012/13
harvest, it exceeds in quantity the exports from the United States, while
Argentina, third place in the ranking of grain production, has presented
decreasing exports of soybean.
The
Brazilian exports of the soybean complex accounted for 14.6% of the export
tariff for 2015, equivalent to US$ 27.96 billion, of which 75.1% were soybeans,
20.8% bran and 4.1% of refined oil (LOPES; FERREIRA; LIMA, 2015; MDIC, 2016).
At
the beginning of the 1980s, the Central-West states occupied 14% of their
soybean area, compared to 77% of the southern region, but from the 1990s, this
scenario began to transform, and already in 1998, the states located in the
central-west region had 45%, while the southern region reduced its area to only
48% (PAULA; FAVERET FILHO, 1998).
The
increase in the area of soybeans planted in the Midwest, to the detriment of
the planted area in the South, can be explained by the migration movement of
the Southerners, especially from Rio Grande do Sul and Paraná, toward the
Central West. They went to Mato Grosso, Mato Grosso do Sul, and Goiás,
expecting to increase the amount of land they had in the south of the country
(LUEDEMANN, 2009).
Thus,
it is observed that anthropic activities related to soy production have
consequences in the economic, social, and environmental spheres. Measuring
these influences, as well as evaluating interactions and feedback, implies
methodologies that can deal with this complexity.
The
response to anthropogenic pressure can be represented by a series of variables
that represent economic gains, influence on social dimensions, including
health, education, but also the depletion of local resources and loss of
biocapacity.
In
this sense, the present study seeks to identify the main variables that are
influenced by the anthropic activity resulting from the soybean production in
Mato Grosso's municipalities.
The
choice of variables implies a series of considerations, starting with the
selection of relevant variables, their availability, and the appropriate
treatment to avoid redundancy.
This
avoids the adoption of variables that do not contribute to the diagnosis and
allows for the optimization of decision-making and adoption of public policies
in a faster and more efficient way.
The
Factor Analysis method was chosen to integrate the results of the variables
adopted, to show correlation and interdependence, and to allow the aggregation
of data.
To
meet the proposed objective, the article is organized with this brief
introduction, followed by a Literature Review section. The third section
presents the methodology that was used, and in the fourth section, we present
the analysis and discussion of the results. In the last section, we present the
final considerations.
2. LITERATURE REVIEW
Aiming
to present the environmental, economic, and social contribution that soybean
production promotes in the municipalities of the State of Mato Grosso, in this
section, a brief review will be made on the literature available on this
subject.
2.1.
Environmental,
Economic, and Social Influence of Soybean Production in Matogrossense
Municipalities
In
the environmental field, it is possible to observe changes in legislation, operational,
and management practices resulting from competitive pressures from external
markets and, especially, from raising society's awareness of environmental
issues and the impact of soybean production on the development of society (ZHU;
SARKIS, 2004).
Such
changes in the operational and management practices can be observed by the
adoption of Innovative Agricultural Technologies, which began to appear in Mato
Grosso in the 80's, such as the use of direct planting (PRUDÊNCIO DA SILVA et
al. 2010).
Direct
planting was introduced to alleviate the problem of soil erosion, which
directly leads to loss of efficiency of agricultural production, and indirectly
leads to the silting of nearby rivers and lakes (RODRIGUES, 2005), which are
contaminated by heavy metals of fungicides and chemical fertilizers (CAVALETT;
ORTEGA, 2009).
However,
other measures to prevent soil erosion, which directly entails the silting of
rivers and lakes and soil impoverishment, and indirectly contributes to
contamination of water and soil resources, have been implemented, such as the
Rotation of Culture, Integration of Farming-Livestock-Forestry (and its
variations), Sanitary Void, Biological Pest Control, as suggested in several
studies (BINI, 2016; CAVALETT; ORTEGA, 2009; RODRIGUES, 2005; SOARES, 2016).
Gibbs
et al., (2015) points out that deforestation is an activity that needs to be
controlled, and highlights that between 2001 and 2006, soybean plantations
expanded by one million hectares, only in the Amazon biome.
Another
factor that has been the subject of discussions about the effects of soy
production is the high reliance on productive inputs, such as fertilizers,
fuels, machinery, and pesticides, which contribute to the increase of
greenhouse gas emissions (GHG) (RAUCCI et al., 2015).
According
to Teixeira; Faria; Zavala (2013) soybean production has been one of the main factors
responsible for the emission of CO2 in the State of Mato Grosso.
Emissions in the state are due to crop residues, the use of fuels and
fertilizers and the incorporation of new productive areas.
According
to Lindoso (2009), in 2006, soybeans emitted the equivalent of 3.5 million tons
of CO2, and the use of fertilizers in the crop was responsible for
emitting 830,000 tons of CO2.
Among
the main GHG Emission Factors (FE) in soybean production in Mato Grosso, the
use of fossil fuels, fertilizers, crop residues, electricity, pesticides, seeds,
biological nitrogen fixation (BNF) and deforestation to incorporate new areas
for production (LINDOSO, 2009; RAUCCI et al., 2015, TEIXEIRA; FARIA; ZAVALA,
2013).
As
for the economic aspect, according to Fagundes and Siqueira (2013), the soybean
crop takes an important position as an agricultural activity that generates
employment and income, moving a series of economic and institutional agents,
all its complexity and reach of its productive process. This is a dynamic and
demanding sector of innovations and constant investments due to the high degree
of competitiveness in the current market.
According
to Anholeto and Massuquetti (2014), the soybean crop has stood out in relation
to the Brazilian crops, providing greater income to the producers and foreign
exchange to the country, precisely because it is a product with a wide chain of
production from the manufacture of inputs to the final consumption.
With
the expansion of the area, the modernization of machinery and equipment and the
technology used to grow soybeans, aiming to improve production and increase
incomes, we can see the increase in the number of jobs, and in 2010, the
productive activity was responsible for 60.6% of the country's income
generation.
These
factors, together with the genetic improvement of seeds and more productive
planting systems, besides contributing to the generation of employment and
income, contributed to the increase of soybean production and productivity in
the Midwest region of the country (KUMAGAI; SAMESHIMA, 2014).
In
addition, flatland supply and climate regularity enabled Mato Grosso to achieve
higher national productivity, with 2,730 kg/ha, compared to a national average
of 2,406 kg/ha, and reaching the position of largest soybean producer in the
country in the 1999/00 crop, according to figure 1 (CONAB, 2017; SÁ; ALBANO,
2011).
Figure 1: Evolution of Soybean Production: 1985 - 2015.
Source: Adapted from (CONAB, 2017).
This
growth was made possible by the availability of 200 million hectares of arable
land, with favorable climatic conditions and predictable precipitation
patterns, together with the public financing policies for timber, livestock,
and soybean exploitation (ARVOR et al., 2010).
According
to the Brazilian Association of Vegetable Oil Industries - ABIOVE (2017), the
soybean complex has a great role for the development of the Brazilian economy,
which in 2011 generated more than 1.5 million jobs in the 17 states of the
federation. Considering investments as technologies, increased new areas for
planting, as well as growth of the grain processing industry, promoted improved
life of the population.
In
the social aspect, that is, for economic and social development, agriculture
does not yet add enough value in its primary production, according to Vituri
(2010). It has greatly contributed to the generation of employment, being an
important link growth and economic development. This is because it is the
driving force behind the activities for the industry and services sector.
Industrial
modernization is a consequence of agriculture's contribution to economic
development, given this optimism in agriculture, Souza (2005) argues that there
may be a positive correlation between agricultural growth and growth in other
sectors.
Before
the understanding, soybeans, the main product produced and marketed in Brazil,
help in the positive influence in the other sectors, improving the quality of
life, as well as raising the indices of education and health, mainly in the
main municipalities that are the largest producers of grains.
3. METHODOLOGY
In
order to elucidate the contributions of soybean production in the Mato Grosso
do Sul municipalities, a survey was carried out in the databases of the
Brazilian Institute of Geography and Statistics (IBGE), Portal AliceWeb of the
Ministry of Industry and Foreign Trade and Services (MDIC), in the PRODES
Project Portal of the Institute of Space Research (INPE) and the Federation of
Industry Portal of Rio de Janeiro (FIRJAN). According to Table 1, the data were
organized in SPSS® software (Statistical Package for the Social
Sciences) version 23.
Subsequently,
the data were treated quantitatively through the technique of Principal
Component Analysis through SPSS® software.
The
data collected refer to the 141 municipalities that make up the State of Mato
Grosso.
In
view of the need to reduce the asymmetry between the values of the variables,
the data transformation was performed using log (x). The transformation was
necessary considering that the values of the variables Population, Area
occupation with soybean, GDP per capita, Value of Production, Total Exported,
Quantity Produced, Area of Forest and Production of CO2 were
atypical to the values of the variables IFDM - Education, IFDM - Employment
& Income, IFDM - Health and IDR, so it is necessary to transform the values
to correct any problems.
Due
to the number of variables used to verify the contribution promoted by soybean
production in the municipalities of Mato Grosso, the factor analysis method was
used to identify the main variables.
The
factorial analysis proposes to reduce the number of variables by the extraction
of independent factors, so that a better explanation of the relationship
between the original variables occurs, avoiding correlational problems and
decreasing the relevance of endogeneity (HAIR, 2006).
Table 1: Variables and data source used in the
research.
Variables |
Source |
Populations (hab.) |
IBGE |
Occupation of
the area with soybean (ha) |
|
GDP per capita (US$) |
|
Value of
Production (Thousand US$) |
AliceWeb |
Total Exported (US$) |
|
Quantity Produced (ton.) |
|
IFDM – Education |
FIRJAN |
IFDM - Employment & Income |
|
IFDM – Health |
|
Area of the
Municipality (ha) |
INPE |
Forest Area (Km2) |
|
IDR |
(CHIOVETO,
2014) |
Production of
CO2 Soybean (ton.) |
(LINDOSO,
2009) |
The
factor analysis method can be expressed by the mathematical expression as a
linear combination between the variables (Xi) and k common factors
(F):
Where,
- Multiple regression coefficient for variable
i, factor k.
- Uncorrelated common factor ()
- Error that captures the specific variation
not explained by the linear combination of the factorial loads with the common
factors.
Hair
(2006) describes the steps to be followed for the application of the factorial
analysis: the assembly of the correlation matrix, the extraction of the initial
factors, the factor rotation, and the calculation of the factorial scores.
Stevens
(2009) suggests that the correlation matrix is constructed using the sample
correlation matrix from which the extracted values are organized in a
decreasing manner.
The
extraction of the initial factors is obtained through the main components
method, being observed if the factors are obtained in order to maximize the
total variance attributed to each of the factors and if they are obtained
independently between them (STEVENS, 2009).
For
Hair (2006), to determine the amount of factors necessary to represent the
dataset, only the factors whose characteristic root was greater than the unit were
considered.
The
coefficient of correlation between each of the original variables and each of
the factors is now described by the factorial load, while the commonality of
the variable, equivalent to the square of the factorial loads, represents the
relative contribution of each factor to the total variance of a variable
(FIELD, 2009). In this sense, the community has for factorial analysis a
similar meaning to the coefficient of determination of the regression.
According
to Hair (2006), the most appropriate method is the orthogonal varimax rotation,
because it facilitates the interpretation of factorial loads by minimizing the
number of variables that have a high weight in one factor.
Thus, each of the subsets of original variables
becomes more associated with a given factor. Stevens (2009) points out that the
rotation does not change the values of commonalities, and the proportion of the
variance explained by the set of factors is the same before and after the
rotation.
Factor
rotation is used to improve the interpretation of the solution. The objective
is to find factors that have high “loadings” for some variables and low ones
for others. The interpretation of each factor is done in function of the
variables for which it has high “loadings”.
After
performing the factor rotation, the factorial score calculation is started.
Hair (2006) suggests that the procedure is similar to a regression. When using
the factorial loads of variables as estimated parameters of the equation and
multiplying them by the values of the variables that compose the factor, we
obtain the estimated value for the dependent variable, in this case, the factor
score. Algebraically, the general expression for the estimation of the j-th
factor is given by:
(2)
In
which, are the coefficients of the factorial scores
and is the number of variables.
Following
the calculation of the factor score, the next step is to verify the adequacy of
the factorial analysis. To test the suitability of the factorial analysis
model, the Kaiser-Meyer-Olkin (KMO) statistic and the Bartlett Sphericity Test
(TEB) are used (FIELD, 2009; HAIR, 2006; STEVENS, 2009).
The
KMO test is a correlation coefficient that demonstrates the existence or not of
observed correlation between the selected variables. Hair (2006) points out
that the values of this test vary from 0 to 1, small values of KMO (KMO < 0.50)
indicate the non-suitability of the analysis.
The
TEB allows us to reject the null hypothesis according to which the correlation
matrix would be equal to the identity matrix, that is, without significant
correlations.
4. RESULTS AND DISCUSSION
The
Factor Analysis aims to verify the dimensions that underlie the questions
investigated. To use Factor Analysis, it is necessary to verify if some
assumptions are met, initially check the Bartlett sphericity test and the
Kaiser Meyer-Olkin (KMO) sample adequacy measure.
The
sample suitability measure compares the correlation coefficients observed with
the partial correlation coefficients, varying between 0 and 1, whereby, the
closer to 1, the better the sample. In this analysis, the value 0.782 was
found, indicating a good sample adequacy, as shown in Table 2.
The
Factorial Analysis implemented was of the exploratory type and allowed to
obtain three dimensions.
The
values of Table 2, present the information that allows us to select the number
of components to retain. It is observed that the eigenvalues found are higher
than 1, and in the set, explain 74.25% of the total variation of the variables
under analysis. It should, therefore, be considered three components.
The
variables that explain component 1, according to Table 2, suggest a strong
relation with the effects of soybean production, considering the high variance
index of the variables LN Soybean Area (0.971), LN CO2 (0.970), LN
Production (0.967), LN Production Value (0.960) and IDR (0.747).
The
variables grouped in component 1 are directly related to soybean production
since the volume of production depends on the area planted to soybeans, which
in turn impacts on CO2 emissions and on the value of production,
which in turn promotes the elevation of IDR (SOUZA, 2005;
LINDOSO, 2009; ARVOR et al., 2010; CHIOVETO, 2014; BINI, 2016).
Component
2 can be explained by the variables related to social development indicators
(IFDM Education (0.745), IFDM Health (0.726), IFDM Employment and Income
(0.634)) and by the variable related to economic development indicators GDP per
capita (0.609) and LN Exports (0.546).
It is
worth noting that the variables of the social indicators presented a greater variance
than the variables for the economic indicators. This suggests that the soybean
production promotes a more pronounced improvement in the social indicators on
the municipalities where soybean production occurs, similar to what was also
observed in the studies of Vituri (2010);
Anholeto; Massuquetti (2014); ABIOVE (2017).
Finally,
component 3 is related to the variables LN Area of the Municipality (0.880); LN
Mata (0.807) and LN Population (0.602) suggesting a reading of the Demographic
Factors.
Considering
the variances presented above, it can be seen that soybean production is more
frequent in municipalities that have larger territorial extensions, which would
facilitate the expansion of areas for cultivation, as well as allow to comply
with environmental legislation, regarding the area of the preservation and
forests native. On the other hand, as the high technology used in the machines
and equipment, the use of direct labor is relatively low, justifying the low
preference for more populous municipalities, according to the studies of Bernardi al. (2014); Hirakuri
et al. (2014); WWF (2014).
To
name the components, it was necessary to observe the loadings of each variable
in each extracted component, Table 2 displays the matrix of the rotating
components, where we can verify the correlation between each one of the
variables with each one of the components extracted. The meaning of each
component lies in the strongest correlations. Only strongest correlations in
each component are displayed for the purpose of clarity in interpreting the
table.
Thus,
Factorial Analysis allowed to identify the most important variables, and to
group them in main components, so that they will be denominated as Production
Factor, Socioeconomic Factor, and Demographic Factor.
Table 2: Rotational Component Matrix
Variables |
Component |
Communalities |
|
||||
Production |
Socioeconomic |
Demographic |
|
|
|||
IDFM_Employment and Income |
|
0,634 |
|
0,622 |
|
||
IFDM_Education |
|
0,745 |
|
0,594 |
|
||
IFDM_Health |
|
0,726 |
|
0,583 |
|
||
IDR |
0,747 |
|
|
0,727 |
|
||
LN Population |
|
|
0,602 |
0,524 |
|
||
LN Area of the Municipality |
|
|
0,880 |
0,827 |
|
||
LN Area of the Soybean |
0,971 |
|
|
0,972 |
|
||
LN GDP Per Capita |
|
0,609 |
|
0,680 |
|
||
LN Value of the Production |
0,960 |
|
|
0,933 |
|
||
LN Exportation |
|
0,546 |
|
0,593 |
|
||
LN Production |
0,967 |
|
|
0,965 |
|
||
LN Forest |
|
|
0,807 |
0,660 |
|
||
LN CO2 |
0,970 |
|
|
0,973 |
|
||
Extraction method: Principal components.
Varimax rotation with Keiser Normalization. Extraction criterion: eigenvalue
higher than 1. Total variance explained by extracted components: 74,25% KMO = 0,782 |
|||||||
5. CONCLUSIONS
The
growing world demand for soybean allowed the State of Mato Grosso, by its
vocation, to expand the area, production, and productivity of soybeans.
However, this expansion brought with it changes in the productive structure,
which in turn led to changes in the environmental, economic, and social spheres
in all municipalities of Mato Grosso.
Due
to the large number of variables used, we chose to use a factor reduction
methodology to identify which variables are most affected by soybean production
in the municipalities of Mato Grosso
The
applied methodology allowed us to analyze several aspects related to soybean
cultivation in the municipalities of Mato Grosso in a way that reduced the
number of data to a more manageable set while retaining the maximum possible
information.
The
results indicate the grouping of the variables into three factors.
The
variables IDR, LN Soybean Area, LN Production Value, LN Production, and LN CO2
make up the Production Factor, and the positive correlation found indicates a
positive influence on population growth and health quality in the municipality.
In this case, it is worth noting that the influence on the variable LN Soybean
Area (0.971) is higher than the IDR (0.747), which may indicate that soybean
production has a stronger influence on soybean area and an influence on the
Rural Development Index (IDR).
In
turn, the variables IFDM Education, IFDM Health, IDFM Employment and Income,
GDP Per Capita and LN Exportation make up the Socioeconomic Factor. The
positive correlation found, indicating that soybean production positively
influences the related variables.
The
variables LN Population, LN Area of Municipality, and LN forest are associated
to the Demographic Factor.
Thus,
the anthropic activity resulting from soybean production in the municipalities
of Matogrossense positively influenced the production, socioeconomic and
demographic factors in the municipalities where the oilseed crop was recorded.
With the development of the study and the results
found, the imperative was to carry out a future research with municipalities of
the state of Illinois/USA to confront the results found here, and if the
variables and factors will present the same correlations.
Thus,
the present study is a useful tool for public and private decision-makers regarding
the influence that soybean production exerts on production, socioeconomic and
demographic factors in Mato Grosso's municipalities.
6. ACKNOWLEDGMENTS
Appreciation
is extended to the Coordination of Improvement of Higher Education (CAPES)
program from the Ministry of Education, the providers of the research grant;
and to IFMT for the research support, and the granting of the capacitation
license.
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