西南岩溶区生态安全评价研究——以广西为例 | |
张燕 ; 吴玉鸣 ; ZHANG Yan ; WU Yu-ming | |
2010-06-07 ; 2010-06-07 | |
关键词 | 区域生态安全 生态足迹理论 动态变化 西南岩溶区 regional ecological safety ecological footprint dynamic change quantitative analysis the Karst areas in Southwest China Guangxi. X821 |
其他题名 | Study on Ecological Safety in the Karst Areas in Southwest China:A Case Study of Guangxi Autonomous Region |
中文摘要 | 西南岩溶区是举世公认的典型的生态环境脆弱系统之一,也是我国典型的极贫困代表区域之一。广西处于西南岩溶地区,岩溶面积为9.8×104km2,占广西土地总面积的41%。本文以广西为例,采用生态足迹的理论和方法来测算广西区域生态安全状况,对1990~2003年广西岩溶生态环境的生态足迹、生态承载力、生态盈亏及生态压力指数进行测算分析并提出预测模型。研究结果:①广西生态足迹呈不断增加趋势,从1990年的0.601 7 hm2增加到2003年的1.137 8 hm2;②生态承载力呈不断下降趋势,从1990年的0.820 4 hm2减少到2003年的0.653 7 hm2;③生态盈亏从1990年生态盈余的0.218 8 hm2下降到2003年的生态赤字达-0.484 8 hm2,出现严重的生态赤字;④1990~2003年生态足迹压力指数由0.7334增加到1.7406,增长幅度巨大,从临界安全状态到不安全状态。; The karst mountain areas in Southwest China are one of the universally acknowledged ecologically vulnerable systems and one of the representative poverty-stricken regions in China.Guangxi is located in the karst physiognomy blazon and the karst area is 98,000 square kilometers,accounting for 41% Guangxi's total acreage.Take Guangxi as a example,using the theory and method of the ecological footprint,combining the change of regional land use,resource environment,population,society and economiy,this paper calculated the ecological footprint,ecological carrying capacity,ecological surplus/deficit,ecological pressure index and 10,000 yuan of GDP in 1990-2003 of Guangxi.What is more,this paper has put forward the prediction models of different ecological footprints,ecological carrying capacity,ecological surplus/deficit and ecological safety change,and also has tested and assessed the ecological footprint demands of 10,000 yuan of GDP.The results show that:① The ecological footprint shows an increasing trend with varying degrees,from 0.6017 hm~2 to 1.1378 hm~2.② The ecological carrying capacity shows a decreasing tendency,from 0.8204hm~2to 0.6537hm~2.③ The ecological surplus shows a decreasing tendency,from 0.2188 hm~2 to 0.4848 hm~2,with a serious ecological deficit.④ The ecological pressure index of the period 1990-2003 increases from 0.83 to 1.74,and the growth scope is huge from critical safe state to not safe state.; 国家自然科学基金项目(70463001); 广西科学基金项目(桂科基0448034)资助 |
语种 | 中文 ; 中文 |
内容类型 | 期刊论文 |
源URL | [http://hdl.handle.net/123456789/37243] |
专题 | 清华大学 |
推荐引用方式 GB/T 7714 | 张燕,吴玉鸣,ZHANG Yan,等. 西南岩溶区生态安全评价研究——以广西为例[J],2010, 2010. |
APA | 张燕,吴玉鸣,ZHANG Yan,&WU Yu-ming.(2010).西南岩溶区生态安全评价研究——以广西为例.. |
MLA | 张燕,et al."西南岩溶区生态安全评价研究——以广西为例".(2010). |
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