基于生态交错带理论的生态环境潜在容量评估和预警研究——以重庆三峡库区为例  

Potential Capacity Assessment of Ecological Environment and Pre-warning Research Based on Ecotone Theory:a Case Study of Three Gorges Reservoir

作　　者：张梦婕[1] 官冬杰[1] 苏维词[2,3] 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆师范大学地理与旅游学院,重庆401331 [3]贵州科学院山地资源研究所,贵阳550001

出　　处：《重庆师范大学学报（自然科学版）》2015年第4期54-60,共7页Journal of Chongqing Normal University:Natural Science

基　　金：国家自然科学基金(No.41201546;No.41261038);重庆市自然科学基金(No.cstc2012jjA20010);国家十二五科技支撑计划专题(No.2011BAC02B02);国家十二五科技支撑计划项目(No.2012BAJ25B09);贵州省重大科技专项(黔科合重大专项字〔2012〕6015号)

摘　　要：生态交错带是指两种不同类型的生态系统交界过渡的区域。基于生态交错带理论对重庆三峡库区的生态脆弱性状况进行了分析,并在此基础上运用道夫尼尔和地球环境的潜在指数M,计算人对地理环境的影响,评估土地类型和环境污染状态。通过对生态环境潜在容量指数E的修正评估了库区22个区县的生态环境潜在容量,并在此基础上做出预警研究,将其划分为急警、重警、中警、轻警和无警等5种类型。最终得出重庆三峡库区生态环境状况两极化现象比较严重,发展不平衡,有些地区生态破坏较为严重,因此需要采取相应的对策进行优化发展。Ecotone is a transition zone of two different ecosystem junctions. Based on the Ecotone theories, this paper analyzed the ecological vulnerability of the Three Gorges reservoir, and then applied the ecological environment potential index （M） to monitor the human＇s impacts on the geographic environment, land type, and the environment pollution status. According to the regional characteristics, the index for potential capacity of ecological environment （M） was further amended for evaluating the potential ca- pacity of ecological environment in 22 counties of the Three Gorges reservoir. Subsequently, a pre-warning evaluation was performed after the potential capacity of ecological environment was ranked into five levels, e. g. , urgent warning, heavy warning, middle warning, light warning, and no warning. The results demonstrated that the development situation of environmental quality in the Three Gorges reservoir was not balanced; meanwhile, there remained the serious ecological deterioration in some regions, indicating that the polarization phenomenon was greatly serious our results suggest that some applicable strategies should be proposed for opti- mized development.

关 键 词：生态交错带 消落区 潜在容量 预警 重庆三峡库区 

分 类 号：X171.1[环境科学与工程—环境科学]