长三角耕地生态系统服务功能时空演变及其驱动机制 |
摘要点击 1128 全文点击 81 投稿时间:2024-05-10 修订日期:2024-07-29 |
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中文关键词 耕地 生态系统服务功能 时空演变 驱动机制 长三角 |
英文关键词 cultivated land ecosystem service functions spatiotemporal evolution driving mechanisms Yangtze River Delta |
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中文摘要 |
明晰耕地生态系统服务功能时空演变规律及其驱动因素,对实现区域生态和粮食安全及社会经济可持续发展具有重要意义. 综合运用InVEST和RUSLE等模型定量评估2000~2020年长三角地区耕地生态系统服务功能,采用核密度估计和可视化制图方法刻画耕地生态系统服务功能时空特征,借助均方根误差测度耕地不同类型生态系统服务功能的权衡关系,并采用地理探测器模型识别耕地生态系统服务时空演变的驱动因素. 结果表明:①研究期内,耕地粮食供给、土壤保持和生物多样性功能整体小幅提升,水源涵养、气候调节和景观美学功能整体呈下降趋势,各项功能均具有较大的空间差异特征. ②不同类型耕地生态系统服务权衡水平呈现不断提高趋势,其空间格局逐渐呈现集聚提升的演化特征. ③坡度、高程、农村居民人均收入和化肥农药施用量对耕地生态系统服务功能时空演变具有较高驱动力. 研究结果旨在为充实丰富耕地生态系统服务功能研究提供实证指导,可为推进耕地资源差异化治理和耕地多功能互促提升提供决策支撑. |
英文摘要 |
It is of great significance to clarify the spatiotemporal evolution of cultivated land ecosystem services(CLESs) and their driving factors to achieve sustainable development. This paper described the spatiotemporal characteristics and the trade-off relationship of different types of CLESs and identified the driving factors of the spatiotemporal evolution of CLESs. The results show that: ① From 2000 to 2020, CLESs showed different temporal trends and had large spatial differences. ② The trade-off level of CLESs showed the evolutionary characteristics of agglomeration and improvement. ③ Slope, dem, per capita income of rural residents, and chemical fertilizer application had high driving forces on the spatiotemporal evolution of CLESs. The results of this study provide decision-making support for promoting the differentiated management of cultivated land resources and the mutual promotion of cultivated land multi-function. |