[1]ZHANG Han,ZHAO Xiaomin,OUYANG Zhencheng,et al.Spatial Disparity Features and Protection Zoning of Cultivated Land Quality Based on Spatial Autocorrelation—A Case Study of Shanggao County, Jiangxi Province[J].Research of Soil and Water Conservation,2018,25(01):304-312.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 01
Page number:
304-312
Column:
Public date:
2018-02-28
- Title:
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Spatial Disparity Features and Protection Zoning of Cultivated Land Quality Based on Spatial Autocorrelation—A Case Study of Shanggao County, Jiangxi Province
- Author(s):
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ZHANG Han1,2,3, ZHAO Xiaomin1,3,4, OUYANG Zhencheng1,2, GUO Xi1,2,3, KUANG Lihua4, LI Weifeng1,2
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1. Key Laboratory of Poyang Lake Basin Agricultural Resources and Ecology of Jiangxi Province, Jiangxi Agricultural University/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Nanchang 330045, China;
2. College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China
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- Keywords:
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cultivated land quality; spatial distribution; spatial autocorrelation; regional protection of cultivated land; Shanggao County
- CLC:
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F301.21
- DOI:
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- Abstract:
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To strengthen the construction of cultivated land quality and improve the new pattern of cultivated land protection, based on the weighted average method and spatial autocorrelation analysis to analyze the spatial characteristics of cultivated land quality, Shanggao County, the cultivated land quality monitoring experimental unit county, was selected as the study area. Introducing the land natural grade index, using grade index and economical grade index as the spatial variables, taking map spot of cultivated land as a unit of spatial autocorrelation analysis, we discussed and explored the differences of spatial characteristics of cultivated land quality at county, township and village scales, and put forward some kinds of protection measures based on local spatial autocorrelation. The results showed that:firstly, cultivated land quality index was low in the southwest and high in the northeast in Shanggao County; the Moran’s I value of land natural grade index was the highest, followed by the land economical grade index and land use grade index, cultivated land quality exhibited significant aggregation of global spatial distribution in Shanggao County; secondly, we found that different types of cultivated land quality indexes had different spatial correlation with a strong degree of concentration at different spatial scales; on the influence degree of spatial scales, land use grade index was stronger, land natural index came next, and land economical grade index was the weakest; thirdly, the positive spatial autocorrelation of cultivated land including the high-high type and the low-low type emerged as the shapes of cluster and had the powerful agglomeration in the form of group, while the negative spatial autocorrelation including the high-low type and low-high type was fragmentary distribution; finally, considering the spatial autocorrelation type of cultivated land quality in Shanggao County, we divided the cultivated land into six protection zones, and put forward a series of corresponding protection measures. The results of the study will provide a reference for well facilitating basic farmland construction, the regional cultivated land quality monitoring, cultivated land protection and management of partition, quality improvement and space pattern optimization.