[1]ZENG Weijun,FU Chaoshu,ZHANG Gengjie,et al.Spatial Ecoenvironment Distribution Characteristics of Arable Land Economy Grade in Yunnan Province[J].Research of Soil and Water Conservation,2017,24(02):246-251.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 02
Page number:
246-251
Column:
Public date:
2017-04-28
- Title:
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Spatial Ecoenvironment Distribution Characteristics of Arable Land Economy Grade in Yunnan Province
- Author(s):
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ZENG Weijun1,2,3, FU Chaoshu4, ZHANG Gengjie1,3, ZHANG Chuan2,3, LIAO Lijun2,3, LIU Shuxia1,3, CHEN Jingyu1,3, Fan Kai1,3, YU Jianxin1,2,3
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1. Engineering Research Center of Science and Technology of Land and Resources, Yunnan Agricultural University, Kunming 650201, China;
2. Engineering Laboratory of Utilization and Protection of Land Resources, Yunnan Province, Kunming 650201, China;
3. College of Water Conservancy, Yunnan Agricultural University, Kunming 650201, China;
4. Faculty of Construction Engineering, Kunming University of Science and Technology, Kunming 650500, China
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- Keywords:
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arable land; economy grade; ecological environment; Yunnan Province
- CLC:
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F301.21
- DOI:
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- Abstract:
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Understanding the quality, quantity and spatial distribution of arable land is the most important key problem in reasonably using arable land resources. In this study, the distribution characteristics of the arable land economy grade in 129 counties were analyzed based on the combination data of cultivated land classification and evaluation of ecological environment situation in Yunnan Province. The results showed that:(1) the average economy grade of the arable land for the whole province presented the positive skewed distribution, grades from 1 to 5 accounted for as high as 92.39%; the arable land distribution in the excellent zone showed a trend of gradual decline along with the increase of economy grade, it exhibited the positive skewed distribution in the other ecoenvironment zone; (2) the average economy grade, being grade 2.9, of the arable land for the whole province is at the lower level; the highest average economy grade of 3.2 occurs in the medium zone, while the lowest of 2.2 is in the poor zone; the average economy grade of the excellent-quality arable land is the highest as grade 10.7, and the low-quality arable land has the lowest average grade of 2.0; the development of the average quality of the arable land for ecoenvironment zone has little difference from the average economy grade of the whole province; (3) the cultivated land in Yunnan Province is mainly identified as the medium, or low-quality, accounting for 95.96% of the area. The poor zone is the low-quality, and accounted for as high as 92.66%. The excellent-quality, or good-quality arable land is mostly found in the medium zone, which is followed by the good zone, accounting for 71.2% and 74.9%, respectively; the medium-quality distribution in ecoenvironment zone is relatively uniform. These conclusions are significant to optimize arable land arrangement, improve arable land quality and protect ecological environment of arable land.