资源-环境双重约束下的区域生态效率的时序特征——以广西壮族自治区为例

为了探讨资源—环境双重约束下我国生态赤字地区资源环境绩效水平,利用生态脆弱指数和资源环境绩效指数（REPI）对地处珠江三角洲的广西资源环境绩效进行了系统分析和比较研究。结果表明：尽管资源环境绩效水平从2000年的72.4上升为2007年的116.1,但趋势并不明显,资源环境综合绩效水平在全国的第24—26位徘徊。综合绩效指数、SO2排放绩效指数、工业固体废弃物排放绩效指数和生物资源指数呈现＂N＂型变动,水污染指数下呈＂∧＂变动态势,大气污染指数呈现＂W＂型剧烈变动,生态承载力处于超载状态,生态脆弱性趋势没有明显改变。资源消耗和污染物排放的下降态势并不稳定。1995—2007年,广西区域环境水平呈下降趋势,区域环境水平和资源转化效率呈剧烈变动的下降趋势,抗逆水平和生态保护指数有所提高,土地资源指数呈现下降态势,排放强度指数下降明显,生态脆弱指数保持恒定,气候变异指数呈波浪状变动,环境治理指数呈剧烈变动。广西面临生态环境的整体不稳定性和对外力干预敏感性的双重压力。广西应发挥地处泛珠三角的地缘优势和辐射＂东盟＂的区位优势,加大结构调整和制度创新力度,缩短目前资源密集型的发展阶段,改善生态效率和承载力,提升广西在泛珠江三角洲地区的综合竞争力。

Parallel analysis of resource and environmental performance and Its regional ecological capacity-A case study for Guangxi Zhuang Autonomous Region

In order to assess resource quality of sites located in the Pearl River Delta region in Guangxi Zhuang Autonomous Region,systematic analyses of ecological environment,natural deficits due to constraints on the environmental performance levels of local resources,and the use of ecological resources and its relation to the environmental vulnerability index/performance index（REPI） were compared.Results illustrate the following：while the level of resources and environmental performance increased from 72.4 in 2000 to 116.1 in 2007,the trend does not indicate a comprehensive resource performance analysis,and the region＇s environmental compatibility ranking has hovered between 24th and 26th within this period.The composite Performance Index,which includes records indicating the overall SO2 emissions performance index,the performance of ＂N＂ change solid waste and biological resources index,the water pollution index as recorded under an ＂∧ ＂ posture change,the air pollution index as recorded in a ＂W＂ type,an illustration of dramatic change in ecological capacity within a region experiencing use overload,and a conclusions reflecting that trends in ecological fragility did not change significantly.Resource consumption and pollutant emissions are unstable.Between 1995 and 2007,Guangxi＇s regional environmental levels decreased;the level of efficiency within regional environmental and resource conversion indicated a drastic downward trend in the levels of stress resistance as potential to improve ecological protection;the land resources index illustrated a downward trend;the emissions intensity index decreased significantly;ecological vulnerability index remained constant;and fluctuations in the climate variability index showed dramatic changes in the environmental governance index.Essentially,numerous sensitive provincial environments face a degree of uncertainty in regards to the quality of external intervention in response to these varied challenges.Guangxi＇s location in the Pan-Pearl River Delta region will greatly influence any steps taken under these circumstances,as its role within the Association of South East Asian Nations offers potential regional advantages,including an intensified interconnectedness with existing support institutions.Such involvement would likely necessitate a restructuring of roles and institutional innovation but would also reduce the current resource-intensive stage of development,improve ecological efficiency,and enhance the Pan Pearl River Delta region in respect to its overall potential.