基于农业可持续发展需求的江苏土地资源支撑能力评价

为了研究江苏土地资源对农业可持续发展的支撑状况，实现科学的农业发展路线，该文从耕地资源生产能力、土壤环境质量以及土地生态系统服务功能出发，构建评价体系，评价江苏省土地资源对农业可持续发展的支撑能力。结果表明，从单要素评价结果来看，江苏省耕地生产能力和土壤环境质量对农业可持续发展的支撑水平优于生态服务功能的支撑水平，大部分地区生态系统服务价值偏低；土壤环境质量处于弱支撑区域的评价单元达15个，今后这些地区在发展农业生产时应关注土壤环境质量。综合评价结果显示，苏中地区大部分县市的土地资源可以较好地支撑农业可持续发展，是江苏省最适宜发展农业可持续的区域，苏南和苏北地区土地资源对农业可持续发展的支撑能力较弱，而苏北地区的支撑能力又优于苏南地区。各地区应根据自身的土地资源禀赋差异，选择合适的农业发展途径，在合理利用土地资源的同时，维持地区的农业生态安全。

Evaluation of land resources support capacity based on sustainable agriculture development needs in Jiangsu Province

In order to study land resources support capacity based on sustainable agriculture development needs in Jiangsu Province, achieve the scientific route of agriculture development, the evaluation system of land resources support capacity was established, including the three aspects of production capacity of arable land resources, soil environmental quality, and ecosystem service function. The evaluation results of a single component showed that the production capacity of arable land resources and soil environment quality were higher than ecosystem service function. The ecosystem services value of most counties was lower. Fifteen assessment units belonged to weak support zones, where the quality of soil environment should be improved. Comprehensive evaluation results showed that the central region of Jiangsu Province belonged to the stronger region of the land resources support capacity, where land resources could better support the sustainable agriculture development, while southern and northern of Jiangsu Province belonged to the weaker region of land resources support capacity, and land resources support capacity in northern region was superior to that in southern region. According to the differences of land resources, each region should choose the reasonable way of agricultural development to maintain the regional agro-ecological safety.