| Cite this article: | 唱彤,李云玲.基于水资源可利用量的我国水土资源匹配状况分析 [J].灌溉排水学报,0,():-. |
| CHANG Tong,LI Yunling.基于水资源可利用量的我国水土资源匹配状况分析 [J].灌溉排水学报,0,():-. |
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| DOI： |
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| Analysis on spatial matching patterns of available water resources and irrigated arable land in China |
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CHANG Tong, LI Yunling
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General Institute of Water Resources and Hydropower Planning and Design,Ministry of Water Resources of P. R. China,Beijing,100120
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| Abstract: |
| 【Objective】Spatial matching of water resources and farm land is of great significance for national food security. Most researches payed attention to the match between water resources and cultivated land resources, and ignored the unavailable water amount in water resources and water-adapted agriculture development.【Method】Focusing on available water resources and irrigated farm land, this paper calculated available water resources for irrigated farm land per unit, Gini coefficient and relative coefficient of available water and irrigated farm land resources, and then analyzed overall mattering degree of water and farm land resources in China, spatial matching patterns and it`s changes in last ten years.【Results】The results indicated that the area of irrigated farm land decreased slightly in 2009-2019, but the area in several north provinces increased dramatically and showed a transfer to northeast and northwest parts of our country. The match of water and land resources in China is relative inequality, the matching status was going severe inequality in last ten years, especially after 2016. Water and land resources have significant difference spatially, eleven provinces are in mismatched and highly mismatched status, which distribute in north China region and northwest region, and migrated to the north in last ten years. 【Discussion】According to regions` matching features and the principle of arable resources development supported by water resources, matching status could be improved through development of cultivated land reserves, water saving, Agricultural Structure Adjustment and water diversion. |
| Key words: available water resources; irrigated farm land; Gini coefficient; match of water and land resources |
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