HE Shu-qin,ZHENG Zi-cheng,MENG Qing-wen,et al.Study on Land Ecological Safety Based on Ecological Footprint in Ya’an City[J].Research of Soil and Water Conservation,2010,17(06):118-122.
基于生态足迹的雅安市土地生态安全研究
- Title:
- Study on Land Ecological Safety Based on Ecological Footprint in Ya’an City
- Keywords:
- land ecological security; ecological footprint; ecological capacity; ecological tension index
- 分类号:
- F323.21
- 摘要:
- 以雅安市1999-2006年的统计数据为基础，利用生态足迹理论与方法，对雅安市的生态足迹、生态承载力、生态赤字进行了研究，对雅安市的生态安全情况进行了评价。结果表明：雅安市人均生态足迹从1999年的1.068hm2增加到2006年的1.657hm2，而同期的人均生态承载力则由0.925hm2下降到0.833hm2，人均生态赤字由0.143hm2增大为0.825hm2，生态压力指数由0.858上升为1.126；万元GDP生态足迹在1.87~2.78hm2之间上下波动，平均值为2.212hm2。研究期内雅安市的人均生态足迹超出了人均生态承载力，表现出巨大的生态赤字，且生态赤字基本上呈直线上升趋势，雅安市的经济社会发展处于不可持续状态，土地生态系统始终处于超负荷和不安全的状态。这为揭示区域土地生态安全的本质提供一定参考，同时也指出协调人口、资源和区域经济发展可缓解这种不安全状态。
- Abstract:
- Based on the statistical data of Ya’an in 1999-2006, we carried out initial research for the city’s ecological footprint, ecological capacity and ecological deficit. The results showed that the ecological footprint per capita in Ya’an city increased from 1.068 hm2 in 1999 to 1.657 hm2 in 2006, whereas, the ecological capacity per capita decreased from 0.925 hm2 to 0.832 hm2; the ecological deficit per capita increased from 0.143 hm2 to 0.825 hm2; the ecological tension index increased from 0.858 to 1.126. Ecological footprint million GDP fluctuation was between 1.87 hm2 and 2.78 hm2 with national average of 2.212 hm2. Ya’an ecological footprint per capita exceeded the ecological carrying capacity per capita, showing a huge ecological deficit and ecological deficit is basically linear upward trend. The results indicated that the development model of Ya’an city was not sustainable, and the land resources was almost in the ecology over burden condition, suggesting that the land ecological environment is at risk. The results would provide theory basis for revealing the essence of regional ecological safety of land, and at the same time, it pointed out that the coordination of people, resources and regional economic development might alleviate the situation of insecurity.
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备注/Memo
收稿日期:2010-4-20
基金项目:国家自然科学基金（40901138）；国家科技支撑计划项目（2008BAD98B05）；四川省教育厅重点项目（07ZA059）；四川省科技厅应用基础项目（2008JY0022）
作者简介:何淑勤（1978- ），女，陕西商南人，讲师，从事水土保持与生态环境方面研究。E-mail：angelhsq@163.com
通讯作者:郑子成（1976- ），男，内蒙古人，博士，副教授，从事土壤生态与水土保持方面研究。E-mail：zichengzheng@163.com