基于植被结构分析法的生态植被与地下水关系研究——以鄂尔多斯盆地内蒙古能源基地为例

生态植被与地下水关系研究是干旱半干旱地区地下水合理开发利用的基础。以植被空间分布和地下水埋深为基础资料,本文尝试提出大尺度生态植被与地下水关系半定量化分析的新方法——植被结构分析法,并以鄂尔多斯盆地内蒙古能源基地为例进行了示范研究。利用植被结构图分析法,可在定量研究生态植被与地下水关系基础上,统计分析地下水开发后生态植被出现演替的临界水位,并预测生态植被的整体演化趋势。

A study of vegetation response to groundwater on regional scale in northern Ordos Basin based on structure chart method

Research on the relationship between vegetation and groundwater resources in arid and semi-arid regions is the foundation of groundwater evaluation,exploitation and management.With increasing emphasis placed on coordinative development of society,economy and eco-environment today,the relationship mentioned above has gradually become a hot research topic both in China and abroad.Based on the data concerning the spatial distribution of vegetation and the groundwater depth,the authors proposed a new semi-quantitative analytical method for large-scale ecological relationship between vegetation and groundwater,i.e.,vegetation structure chart method,and carried out extensive applied research with the Ordos energy base as an example.By using vegetation structure chart method,not only the relationship between vegetation and groundwater but also the warning water level of vegetation succession caused by groundwater exploitation could be obtained.Besides,The developing trend of the vegetation succession can also be predicted.The vegetation structure chart method can be used to make a patterning analysis and research on the relationship between vegetation and groundwater on the regional scale in arid and semi-arid regions.The method is easy to operate,convenient to practice,and simple to implement in production and scientific research.