| 桂西南岩溶生态脆弱区生态承载力分析及可持续发展状况评价——以广西平果县为例 |
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| 引用本文： | 向悟生,李先琨,何成新,陆树华,吕仕洪.桂西南岩溶生态脆弱区生态承载力分析及可持续发展状况评价——以广西平果县为例[J].中国岩溶,2008,27(1):75-79. |
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| 作者姓名： | 向悟生 李先琨 何成新 陆树华 吕仕洪 |
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| 作者单位： | 广西植物研究所,广西,桂林,541006 |
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| 基金项目： | 科技部西部开发科技行动计划
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国土资源部重点实验室基金
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广西科学基金
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中国科学院"西部之光"人才培养计划
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国家科技攻关计划 |
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| 摘 要： | 以平果县这一典型岩溶生态脆弱区为例，依据1990、1995、2000及2002年的调查统计数据，对区域生态系统的生态足迹和生态承载力进行测算，并以测算结果为依据，对区域生态系统可持续发展状况进行评价。结果表明，在1990年、1995年、2000年、2002年，平果县区域生态足迹呈不断增加的趋势，人均生态足迹从0．8004hkm^2增加至1．4444hkm^2，净增加了0．644hkm^2；生态承载力总体也呈增长的趋势，2002年比1990年增长了26．83％，其增长值主要来源于森林（果园）面积的增加，而耕地和草地的面积却呈现负增长。区域生态承载力阈值很小，远低于广西区及全国的同期水平；除森林（果园）表现为轻微生态盈余外，耕地、草地、水域均表现为生态赤字，以致区域生态总体表现为较大的生态赤字，且呈逐渐增加趋势，表明区域生物生产土地面积的需求量已经严重超过区域生态系统的承载能力，区域可持续发展的前景不容乐观。
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| 关 键 词： | 生态脆弱区 生态足迹 生态承载力 可持续发展 平果县 |
| 文章编号： | 1001-4810(2008)01-0075-05 |
| 收稿时间： | 2007/7/23 0:00:00 |
| 修稿时间： | 2007年7月23日 |
Ecologic capacity analysis and sustainability estimation to ecological vulnerable karst region in Southwest Guangxi -- A case in Pingguo county |
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| XIANG Wu-sheng,LI Xian-kun,HE Cheng-xin,LU Shu-hua and LU Shi-hong.Ecologic capacity analysis and sustainability estimation to ecological vulnerable karst region in Southwest Guangxi -- A case in Pingguo county[J].Carsologica Sinica,2008,27(1):75-79. |
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| Authors: | XIANG Wu-sheng LI Xian-kun HE Cheng-xin LU Shu-hua and LU Shi-hong |
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| Institution: | Guangxi Institute of Botany, the Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences;Guangxi Institute of Botany, the Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences;Guangxi Institute of Botany, the Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences;Guangxi Institute of Botany, the Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences;Guangxi Institute of Botany, the Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences |
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| Abstract: | Ecologic footprint is an effective way to measure regional ecologic capacity and sustainability. Taking the representative karst ecologic vulnerable region, Pingguo county, as an example, the regional ecological footprint and ecologic capacity are calculated by means of the statistic data in 1990, 1995, 2000 and 2002. And then, on the basis of the results, the sustainability of regional ecosystem is analyzed. The results show that, from 1990 to 2002, the regional ecologic footprint increased continuously from 0. 8004 hkm^2/per cap to 1. 4444 hkm^2/per cap. The ecological capacity also increased by 26.83% from 1990 to 2002, but the value was very small in comparison to the average level in both Guangxi and China during the corresponding period. On the contrary, the ecologic capacity of arable area and pasture represent a decrease trend. Except forest and garden land, ecologic deficit has occurred in arable area, pasture and water area. Overall, the regional ecologic balance between ecologic capacity and ecologic footprint show increasing ecologic deficit, which indicates that the regional development is unsustainable. |
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| Keywords: | ecologic vulnerable region ecologic footprint ecologic capacity sustainable development Pingguo county |
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