| 引用本文: | 李 丽,于广浒,管 伟,等.沿海地区农业水土资源承载力评价及其障碍因子分析[J].灌溉排水学报,2023,42(S1):117-122. |
| LI Li,YU Guanghu,GUAN Wei,et al.沿海地区农业水土资源承载力评价及其障碍因子分析[J].灌溉排水学报,2023,42(S1):117-122. |
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| 摘要: |
| 【目的】水土资源是维持农业可持续发展的关键因素。针对沿海地区水土资源面临日益严峻的质与量的问题，深入了解沿海地区水土资源的承载能力，评估影响沿海地区水土资源承载力的障碍因素，指导水土资源优化配置。【方法】以南通沿海地区4个县市为研究对象，构建农业水土资源承载力评价指标体系，利用变异性筛选评价指标，运用熵权TOPSIS模型对南通沿海地区的农业水土资源承载力进行评价。基于障碍度模型，对农业水土资源承载力的主要障碍因子进行分析。【结果】①南通市各沿海地区农业水土资源承载力水平较佳，南通市区、如东县、海安县、海门市综合指数在0.45~0.60区间，资源开发利用程度合理；而启东市综合指数在0.30~0.45区间，农业水土资源承载力水平处于平衡状态。②各子系统对南通市沿海地区农业水土资源承载力的影响差异显著，其中农业水土资源对南通市沿海地区农业水土资源承载力均有较大程度的影响效果（33.30%~56.62%）。③农田灌溉水资源效益是制约海安县、如东县和南通市区农业水土资源承载力提升的关键因子，耕地生产力是海门市和启东市农业水土资源承载力提升的关键因子。【结论】本研究成果可为指导江苏乃至全国沿海地区水土资源高效利用提供技术支持。 |
| 关键词: 沿海地区；水土资源承载力；障碍度因子；TOPSIS模型 |
| DOI：10.13522/j.cnki.ggps.2023563 |
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| Evaluation and Obstacle Analysis of Agricultural Land and Water Resources Carrying Capacity in Coastal Areas |
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LI Li, YU Guanghu, GUAN Wei, LI Daoyuan, SUN Xiaoqin
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1. Jiangsu Agricultural Reclamation Land Resources Development Co., Ltd, Nanjing 211000, China; 2. Jiangsu Linhai Farm Co., Ltd., Yancheng 224000, China; 3. College of Agricultural Science and Engineering, Hohai University, Nanjing 211100, China
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| Abstract: |
| 【Background】Water and land resources are crucial factors in maintaining sustainable agriculture. In response to the increasingly severe issues of quality and quantity of water and land resources in coastal areas, a deeper understanding of the carrying capacity of water and soil resources in these regions, as well as an assessment of the obstacles affecting this capacity, plays a significant role in guiding the optimal allocation of these resources. 【Objective】This study focuses on four counties and cities in the coastal area of Nantong, constructing an evaluation index system for agricultural water and soil resource carrying capacity. 【Method】Variability screening evaluation indicators were used, and the entropy-weighted TOPSIS model was employed to assess the agricultural water and soil resource carrying capacity in the coastal area of Nantong. Additionally, the main obstacles to agricultural water and soil resource carrying capacity were analyzed using an obstacle degree model. 【Result】The agricultural water and land resource carrying capacity in various coastal areas of Nantong was relatively good. The comprehensive indices for Nantong City, Rudong County, Haian County, and Haimen City fell within the range of 0.45 to 0.60, indicating a reasonable level of resource development and utilization, with some development potential remaining. However, Qidong City's comprehensive index fell within the range of 0.30 to 0.45, suggesting a balanced state of agricultural water and soil resource carrying capacity and limited further development potential.The impact of various subsystems on the agricultural water and land resource carrying capacity in the coastal area of Nantong varied significantly. Agricultural water and land resources had a substantial influence on the carrying capacity of agricultural water and soil resources in the coastal area of Nantong, accounting for 33.30% to 56.62% of the overall impact. The efficiency of farmland irrigation water resources was a key factor restricting the improvement of agricultural water and soil resource carrying capacity in Haian County, Rudong County, and Nantong City. Land productivity was a key factor in enhancing the carrying capacity of agricultural water and soil resources in Haimen City and Qidong City. 【Conclusion】This study can provide technical support for guiding the efficient utilization of soil and water resources in coastal areas of Jiangsu and even the whole country. |
| Key words: coastal area; land and water resources carrying capacity; obstacle factors; TOPSIS |
