| 引用本文: | 刘 航,胡永翔,尚国琲.水足迹视角下华北平原典型县域土地整治生态绩效评价[J].灌溉排水学报,2023,42(5):115-121. |
| LIU Hang,HU Yongxiang,SHANG Guofei.水足迹视角下华北平原典型县域土地整治生态绩效评价[J].灌溉排水学报,2023,42(5):115-121. |
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| 摘要: |
| 【目的】在水足迹视角下对华北平原典型县域（景县）土地整治生态绩效进行评价。【方法】基于GROPWAT计算土地整治前、后的蓝、绿、灰水足迹，构建以4个整治工程为准则层、共11个指标的土地整治生态绩效评价体系。选用综合赋权法对景县16个乡镇进行生态绩效评价。【结果】土地整治实施后，景县蓝、绿、灰水足迹均有所增加，其中蓝水和灰水足迹增加显著；景县整体生态绩效处于较好水平，良等及以上乡镇共8个，中等及以上乡镇共13个。阻碍景县生态绩效提升的主要障碍因素为：新增水浇地提高率、新增道路硬化率、排灌密度提高率、旱地水利化程度提高率和生物丰度指数提高率。主要障碍类型为水利障碍和土地平整障碍，次要障碍类型为道路障碍和生态障碍。【结论】随着土地整治工程的实施，景县整体生态效益得到有效提高，但对水资源存在负面影响。水足迹视角下华北平原区县域土地整治生态绩效评价模式可为相似地区的土地整治工程建设提供理论参考和可行性范式。 |
| 关键词: 土地整治；水足迹；生态绩效；综合赋权法 |
| DOI：10.13522/j.cnki.ggps.2022221 |
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| 基金项目: |
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| Evaluating Ecological Benefit of Land Consolidation at County Scale in North China Plain Using Water Footprint Concept |
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LIU Hang, HU Yongxiang, SHANG Guofei
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Hebei University of Geosciences, Shijiazhuang 050000, China
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| Abstract: |
| 【Objective】Land consolidation is to improve the efficiency and productivity of segmented lands. The purpose of this paper is to evaluate its ecological gains at country scale in northern China Plain using the water footprint concept.【Method】The evaluation is based on the GROPWAT model. It calculates the blue, green and gray water footprint before and after land consolidation. The ecological performance of the land consolidation is evaluated using four specific remediation projects as the criteria layers, and 11 indicators. The method is applied to the 16 villages and towns in Jing County, Hebei province.【Result】Implementing the land consolidation increases the blue, green and gray water footprints in all villages and towns, especially the blue and gray water footprints which increase more significantly. The overall ecological performance of the 16 villages and towns in the county is good, with eight of them achieving good grade or above, and 13 reaching medium grade or above. The main obstacles hindering the improvement of ecological performance in the county are how to increas new irrigated land rate, hardening rate of new roads, drainage and irrigation intensity, turning rain-fed land to irrigated land, and biological diversity and abundance. The main obstacles are hydraulic land levelling, followed by road and ecological factors.【Conclusion】Overall, implementing the land consolidation can improve ecological benefits to Jing County, but it has a negative impact on water resources. The ecological performance evaluation model proposed in this paper is potential for evaluating land consolidation in other regions in northern China. |
| Key words: land consolidation; water footprint; ecological performance; comprehensive empowerment method |
