辽宁省生态敏感性评价研究  

Liaoning Province Ecological Sensitivity Evaluation and Its Driving Forces

作　　者：王硕[1] WANG Shuo(College of Geographic Science,Liaoning Normal University,Liaoning Dalian 116029,China)

机构地区：[1]辽宁师范大学地理科学学院,辽宁大连116029

出　　处：《国土与自然资源研究》2021年第1期35-38,共4页Territory & Natural Resources Study

摘　　要：土壤作为连接各自然地理要素的枢纽,具有不可替代的调节作用,必须得到合理有效的使用。生态敏感性反映区域环境对干扰的敏感程度,是划分生态功能区的重要依据,因此研究生态敏感性对协调区域经济发展与环境安全具有重要意义。本文选取地理国情监测云平台中的dem 30 m土地利用类型数据以及2019年辽宁省统计年鉴中的人口数据,选取高程、坡度、林地、草地、水域和人口密度作为生态敏感性评价因子,探究辽宁省生态敏感性的具体空间分布情况。主要结论如下:(1)辽宁省生态敏感性较低。4级主要集中在沈阳市和盘锦市,5级主要集中在抚顺市、本溪市和丹东市。4级和5级所在的城市在开发利用土地时,须着重考虑区域生态系统的抗压性,将生态环境安全放在首位;(2)2级和3级区内的城市,可进行适度的人类活动,开发利用土地时考虑区域地形地貌以及植被状况对城市发展策略的制定有积极作用;(3)人口密度的生态敏感性以5级为主,坡度的生态敏感性以3级和4级为主,高程的生态敏感性以1级和2级为主,林地的生态敏感性以5级为主,草地的生态敏感性以4级为主,水域的生态敏感性以1级和5级为主。Soil,as a hub connecting various physical and geographical elements,has irreplaceable regulating function and must be used reasonably and effectively.Ecological sensitivity reflects the sensitivity of regional environment to disturbance and is an important basis for the division of ecological function zones.Therefore,the study of ecological sensitivity is of great significance for the coordination of regional economic development and environmental security.Based on liaoning province as an example,this paper select geographic conditions monitoring cloud platform in dem 30 m type of land use data and demographic data in the statistical yearbook of liaoning province in 2019,selected elevation,slope,woodland,grassland,water area and population density as the ecological sensitivity evaluation factors,to explore the specific spatial distribution of ecological sensitivity in liaoning province.The main conclusions are as follows:(1)liaoning province has low ecological sensitivity.Level 4 is mainly concentrated in Shenyang and Panjin,while level 5 is mainly concentrated in Fushun,Benxi and Dandong.In the development and utilization of land,the cities of level 4 and level 5 should give priority to the stress resistance of the regional ecosystem and give priority to the safety of ecological environment;(2)Moderate human activities can be carried out in level 2 and level 3 cities.Considering the regional topography,landforms and vegetation conditions in the development and utilization of land plays a positive role in the formulation of urban development strategies;(3)The ecological sensitivity of population density was dominated by grade 5,the ecological sensitivity of slope was dominated by grade 3 and 4,the ecological sensitivity of elevation was dominated by grade 1 and 2,the ecological sensitivity of forest land was dominated by grade 5,the ecological sensitivity of grassland was dominated by grade 4,and the ecological sensitivity of water area was dominated by grade 1 and 5.

关 键 词：生态敏感性 辽宁省 GIS 人口密度 

分 类 号：X826[环境科学与工程—环境工程]