典型岩溶断陷盆地耕地承载状况时空分布特征  

Temporal and Spatial Distribution Characteristics of Cultivated Land Bearing Status in Typical Karst Faulted Basin

作　　者：林尤跃 李旭尧 姚望 李明强 邓艳[2] 曹建华[2] 蒋忠诚[2] 梅祥 LIN Youyue;LI Xuyao;YAO Wang;LI Mingqiang;DENG Yan;CAO Jianhua;JIANG Zhongcheng;MEI Xiang(Chongqing Nanjiang Engineering Survey and Design Group Co.,Ltd.,Chongqing 401147,China;Institute of Karst Geology,Chinese Academy of Geological Science/Key Laboratory of Karst Ecosystem and Rocky Desertification Treatment,Ministry of Land and Resources/Key Laboratory of Karst Dynamics,MLR&GZAR,Guilin 541004,China)

机构地区：[1]重庆南江工程勘察设计集团有限公司,重庆401147 [2]中国地质科学院岩溶地质研究所/联合国教科文组织国际岩溶研究中心,国土资源部岩溶生态系统与石漠化治理重点实验室/国土资源部、广西岩溶动力学重点实验室,广西桂林541004

出　　处：《环境科学与技术》2020年第2期194-203,共10页Environmental Science & Technology

基　　金：国家重点研发计划课题(2016YFC0502506);国家自然科学面上基金(41877206);基本科研业务费专项经费(JYYWF20182003)。

摘　　要：西南岩溶地区生态系统脆弱,人地矛盾尤其突出。为研究云南小江流域耕地生态承载状况,以2008、2011、2014、2017年统计数据为基础,应用生态足迹法和GIS技术在修正耕地产量因子的基础上从地貌分区对小江流域耕地4个节点的生态承载状况进行时空动态分析。研究结果表明:小江流域耕地生态足迹增长迅速,其中沉积平坝区、峰丛洼地区和台地槽谷区增长较快;耕地生态承载力先减后增,整体变化幅度较小;流域内除了岩溶河谷区北端耕地生态盈余以外,其余地区皆为生态赤字,对耕地的过度消耗利用,导致耕地处于高负荷状态,很不利于耕地的可持续利用,自2014年开始赤字状况有所好转。整体来看,岩溶中山区和河谷区赤字状况要优于沉积平坝区、峰丛洼地区和台地槽谷区。In the karst area of southwest China,the ecosystem is fragile and the contradiction between man and land is especially prominent.In order to study the ecological carrying capacity of cultivated land in Xiaojiang River basin in Yunnan Province,based on the statistical data of 2008,2011,2014 and 2017,the ecological footprint method and GIS technology are applied to analyze the ecological carrying capacity of four nodes of cultivated land in Xiaojiang River basin from the perspective of geomorphic division on the basis of modifying the yield factors of cultivated land.The results show that the ecological footprint of cultivated land in Xiaojiang River Basin is growing rapidly,among which the areas of deposition plain region,peak cluster-depression region and karst platform and valley region are growing rapidly.The ecological carrying capacity of cultivated land is decreasing first and then increasing,and the overall change range is relatively small.Except for the ecological surplus of cultivated land in the north of karst canyon region,the other areas are all ecological deficits,which leads to excessive consumption and utilization of cultivated land,resulting in cultivated land in the state of high load is not conducive to the sustainable use of cultivated land,and the deficit has improved since 2014.On the whole,the deficit situation of karst mountain region and karst canyon region is better than that of deposition plain region,peak cluster depression region and platform valley area.

关 键 词：小江流域 耕地 地貌分区 生态足迹模型 耕地承载状况 

分 类 号：X826[环境科学与工程—环境工程]