Zymaroieva, A. and Zhukov, О. and Fedonyuk, Т. and Pinkin, А. (2019) Application of geographically weighted principal components analysis based on soybean yield spatial variation for agro-ecological zoning of the territory. Agronomy Research (17 (6)). pp. 2460-2473.
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Abstract
In this study, the geographically weighted principal components analysis as an
alternative method for agro-ecological characterization of the region was provided. The spatial
and temporal distribution pattern of soybean yield was analyzed by using spatial statistics
technology, which provided a good reference for agricultural development planning. The soybean
yield was selected for the present study because it is a comprehensive indicator reflecting the
production potential of the regional agroecosystems. The organized data set, which included the
average per year yields of soybean in 10 regions (206 administrative districts) of Ukraine, was
used for analysis. The regular temporal trend, specific for each district, was previously extracted
from the time series data. The principal components analysis of the detrended data allowed to
identify four principal components, which altogether can explain 58% of the soybean yield
variation. The geographically weighted principal components analysis allowed to reveal that four
spatially determined processes were influencing the yield of soybeans and had the oscillatory
dynamics of different periodicity. It was hypothesized that the oscillating phenomena were of
ecological nature. Geographically weighted principal component analysis revealed spatial units
with similar oscillatory component of soybean yield variation. Our study confirmed the
hypothesis that within the studied territory there are zones with the specific patterns of the
temporal dynamics of soybean yield, which are uniform within each area but qualitatively
different between zones. The territorial clusters within which the temporal dynamics of soybean
yield is identical can be considered as agro-ecological zones for soybean cultivation.
Item Type: | Article |
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Subjects: | Q Наука > Екологія Q Наука > Екологія > Охорона природи S Сільське господарство > S Сільське господарство (Загальне) |
Divisions: | Хіміко-біологічний факультет > Кафедра ботаніки і садово-паркового господарства |
Depositing User: | Users 38 not found. |
Date Deposited: | 30 Jun 2020 08:26 |
Last Modified: | 30 Jun 2020 08:26 |
URI: | https://eprints.mdpu.org.ua/id/eprint/10397 |