【摘要】：根據(jù)蘭州市城區(qū)生態(tài)地質(zhì)環(huán)境特征,從地質(zhì)環(huán)境、生態(tài)環(huán)境和社會環(huán)境3個方面選取了12個評價指標(biāo),構(gòu)建了蘭州市城區(qū)生態(tài)地質(zhì)環(huán)境承載力綜合評價指標(biāo)體系,運(yùn)用層次分析法、加權(quán)綜合評價法,借助ArcGIS10.2空間分析技術(shù),對蘭州市生態(tài)地質(zhì)環(huán)境承載力進(jìn)行了基于柵格尺度的綜合評價,得到城區(qū)生態(tài)地質(zhì)環(huán)境承載力高分辨率的空間評價結(jié)果,并將綜合評價值從高到低劃分為Ⅰ、Ⅱ、Ⅲ、Ⅳ4個等級進(jìn)行空間展示.結(jié)果顯示:Ⅰ級為優(yōu),區(qū)域面積最小,僅占研究區(qū)總面積的9.13%,主要分布于西固區(qū)、安寧區(qū)和城關(guān)區(qū)等黃河沿岸的部分高漫灘和一、二級河流階地;Ⅱ級為良,占比33.58%,大部分位于蘭州市七里河區(qū)北部、城關(guān)區(qū)南部的一、二級階地等區(qū)域,以及主城區(qū)南北兩側(cè)的小部分山區(qū);Ⅲ級為中,區(qū)域面積最大,占比46.72%,連片分布于主城區(qū)南北兩側(cè)的二、三級階地區(qū)域和南北兩山后緣的高海拔山區(qū);Ⅳ級為差,占比11.07%,主要位于主城區(qū)南北兩側(cè)三級及三級以上高階地、南北兩山,并呈條帶狀在南北兩側(cè)環(huán)繞蘭州市城區(qū).研究結(jié)果為蘭州城區(qū)的建設(shè)發(fā)展提供了重要的科學(xué)參考,對城市發(fā)展具有重要的指導(dǎo)意義.
[Abstract]:According to the characteristics of ecological geological environment in Lanzhou city, 12 evaluation indexes were selected from three aspects of geological environment, ecological environment and social environment, and the comprehensive evaluation index system of ecological geological environment carrying capacity of Lanzhou city was constructed. With the help of the analytic hierarchy process (AHP), the weighted comprehensive evaluation method and the ArcGIS 10.2 spatial analysis technique, the ecological geological environment carrying capacity of Lanzhou was evaluated based on grid scale. The high resolution spatial evaluation results of eco-geological environment carrying capacity in urban area were obtained, and the comprehensive evaluation values were divided into four grades, I., 鈪，

本文編號：2136896