| Cite this article: | 刘航,胡永翔,尚国琲.水足迹视角下华北平原区县域土地整治生态绩效评价研究[J].灌溉排水学报,0,():-. |
| liuhang,huyongxiang,shangguofei.水足迹视角下华北平原区县域土地整治生态绩效评价研究[J].灌溉排水学报,0,():-. |
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| Research on ecological performance evaluation of land consolidation in counties in North China Plain from the perspective of water footprint |
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liuhang, huyongxiang, shangguofei
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Hebei GEO University
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| Abstract: |
| 【Objective】From the perspective of water footprint, the ecological performance of county land consolidation in North China Plain was evaluated.【Method】Based on GROPWAT, calculate the blue, green and gray water footprints before and after land consolidation, and build an ecological performance evaluation system of land consolidation with four specific remediation projects as the criteria layer and a total of 11 indicators. The ecological performance of 16 villages and towns in Jing County was evaluated by comprehensive weighting method.【Results】 After the implementation of land consolidation, the blue, green and gray water footprints of Jing County have increased, among which the blue and gray water footprints have increased significantly; The overall ecological performance of Jing County is at a good level, with 8 towns of good grade and above and 13 towns of medium grade and above. The main obstacle factors hindering the improvement of ecological performance in Jing County are: the increase rate of newly added irrigated land, the hardening rate of newly added roads, the increase rate of drainage and irrigation density, the increase rate of dryland water conservancy degree and the increase rate of biological abundance index. The main obstacles are water conservancy obstacles and leveling obstacles, and the secondary obstacles are road obstacles and ecological obstacles. 【conclusion】Through the implementation of land consolidation project, the overall ecological benefit of Jing County has been effectively improved, but there is a negative impact on water resources. From the perspective of water footprint, the ecological performance evaluation model of county land regulation in north china plain can provide theoretical reference and feasible paradigm for land regulation projects in similar regions. |
| Key words: Land consolidation; water footprint; ecological performance; comprehensive empowerment method. |
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