摘要
通过定性和定量分析建立了一套相对完整的评价指标体系,采用因子分析法进一步筛选评价指标,应用熵权法赋予指标权重,采用模糊数学方法构建评价模型,并对毕节地区喀斯特生态系统健康状态进行了实例研究。结果表明,毕节地区喀斯特生态系统在结构功能方面属于亚健康,可持续利用能力方面属于不健康状态,动态变化方面属于健康状态。以桂林、昆明作为参比地区进行了对比评价,得出3个喀斯特生态系统整体健康状况排序为:桂林>昆明>毕节地区。通过此评价,明确了毕节地区喀斯特生态系统健康的状况及其影响因子,了解其与其它2个喀斯特地区的健康差距,为喀斯特生态系统的保护提供科学依据。
The evaluation method of karst ecosystem health was emphatically discussed. By qualitative and quantitative analysis, a set of relatively integrated evaluation indexes system was brought forth. Moreover, entropy was employed to give indexes weight, and fuzzy mathematics was utilized to establish the evaluation model. Then the situation of karst ecosystem health in Bijie area was studied as a case. The resuits indicated that the Bijie area in the karst ecosystem health functions belong to the structure of the subhealth, sustainable use of capacity belong to the unhealthy state, dynamic change belong to the healthy state. Subsequently, by contrastive evaluation with Guilin,Kunming as the reference karst areas,the integrated conditions of karst ecosystem health of these four areas followed as the sequence：Guilin〉Kunming 〉Bijie area. Consequently, the evaluation could made clear the condition and influencing factors of karst ecosystem health of Bijie area. The health gap between Bijie area and the other three karst areas provided a scientific basis for programming and protecting of karst ecology of Bijie area.
出处
《水土保持研究》
CSCD
北大核心
2009年第3期148-154,共7页
Research of Soil and Water Conservation
基金
国家"十一五"科技支撑计划专题(2006BAC01A09-5)
贵州省科技攻关计划(黔科合S字[2007]1018)
贵州省重大科技专项(黔科重大合计[2006]6014)
贵州省发改委高新技术产业化项目
