喀斯特地区耕地生态承载力供需平衡

发布时间：2018-03-02 09:26

本文关键词： 喀斯特耕地生态承载力供需平衡毕节市　出处：《生态学报》2017年21期 　论文类型：期刊论文

【摘要】：以喀斯特地区耕地生态承载力供需关系作为切入点,采用GIS软件和耕地生态足迹模型,在修正耕地产量因子的基础上构建喀斯特地区耕地生态承载力供需平衡指数,对以喀斯特地貌为主的毕节市2014年耕地生态足迹供需平衡现状进行分析评价。结果显示:(1)毕节市耕地生态足迹供需在空间分布上呈现北部盈余而南部超载的态势;(2)国内生产总值与耕地生态足迹供需平衡指数之间存在负相关关系;(3)耕地生态承载力供需平衡指数与潜在石漠化、轻度石漠化及中度石漠化面积占比之间存在负相关关系,与强度石漠化面积占比存在正相关关系;(4)全市8县(区)中,4个县(区)耕地生态盈余,2个县耕地生态平衡,2个县耕地生态赤字,全市约75.28%的人口生活在耕地生态盈余区和平衡区,24.72%的人口生活在耕地生态赤字区。可为毕节市农业产业结构调整、生态安全预警、区域经济发展及土地利用总体规划编制提供决策依据。
[Abstract]:Based on the relationship between supply and demand of cultivated land ecological carrying capacity in karst area, the supply and demand balance index of cultivated land ecological carrying capacity in karst area was constructed by using GIS software and cultivated land ecological footprint model. This paper analyzes and evaluates the balance between supply and demand of cultivated land ecological footprint in 2014 in Bijie City, which is dominated by karst landforms. The results show that the spatial distribution of ecological footprint supply and demand of cultivated land in Bijie City is surplus in the north and overload in the south. (2) there is a negative correlation between GDP and the balance index of supply and demand of cultivated land ecological footprint. (3) the balance index of supply and demand of cultivated land ecological carrying capacity and potential rocky desertification. There was a negative correlation between mild and moderate rocky desertification. There is a positive correlation between farmland ecological surplus in 4 counties (districts), cultivated land ecological balance in 2 counties and deficit in 2 counties in 8 counties (districts) of the city. About 75.28% of the city's population live in cultivated land ecological surplus areas and balanced areas, and 24.72 percent of the population live in cultivated land ecological deficit areas. Regional economic development and land use master planning to provide decision-making basis.
【作者单位】：湖南师范大学资源与环境科学学院;铜仁市国土资源局;贵州科学院山地资源研究所;
【基金】：国家重点研发计划项目(2016YFC0502406) 教育部人文社科重点研究基地重大项目(14JJD720016) 2014年度“西部之光”人才培养计划项目“基于LUCC的贵州赤水河流域生态风险监测与评估”
【分类号】：F323.211

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