【摘要】 沁水区块煤层气开发区域生态环境面临的问题日益突出。基于生态系统服务功能及生态敏感性,利用PSR模型进行了沁水区块煤层气开发区域的生态承载力评价。结果表明:(1)水源涵养、水土保持、生物多样性维护功能较好区域主要分布在区域西部广大山区的森林生态系统及植被覆盖良好的地区,水土流失敏感性区域分布广泛,主要分布在研究区东部;(2)沁水区块煤层气开区域西北部以及东部地区生态承载力较高,南部地区生态承载力较低,生态承载力高、较高、中等、较低、低水平区域面积分别占19.95%,20.07%,19.99%,20.70%和19.29%;(3)寺河岳城区块、成庄区块、沁城区块、胡底区块、郑庄区块生态承载力低水平与较低水平分别占区块总面积的96.15%,74.55%,82.29%,77.17%和73.35%,说明煤层气开发力度严重影响了生态系统自身的调节能力,使生态系统结构与功能处于不稳定状态。更多还原

【Abstract】 The problems of ecological environment in coalbed methane block have become more and more serious.The spatial characteristics of ecological carrying capacity in the coalbed methane area of the Qinshui block were analyzed.The results indicated that:(1)the water conservation,soil and water conservation and biodiversity conservation function of the vast mountainous areas in west were better,and soil and water loss in east of study was more sensitive;(2)the ecological carrying capacity was higher in northwest and east regions and was low in southern region;the area ratios of ecological carrying capacity of higher,high,medium,low and lower levels were 19.95%,0.07%,19.99%,20.70% and 19.29%,respectively;(3)the area ratios of lower ecological carrying capacity in Sihe block,Chengzhuang block,Qincheng block,Hudi block,Zhengzhuang block were 96.15%,74.55%,82.29%,77.17% and 73.35%,respectively,showing that the development of coalbed methane could make the structure and function of the ecosystem unstable.更多还原