新疆昆玉市生态安全评价及其时空分异特征研究  

Spatial-temporal discrimination for the urban eco-security evaluation in Xinjiang Kunyu

作　　者：袁也 武文丽[1] 付宗驰[1] 黄春波 楚光明[1] YUAN Ye;WU Wenli;FU Zongchi;HUANG Chunbo;CHU Guangming(Agriculture College,Shihezi University,Shihezi,Xinjiang 832000,China;School of Geography and Information Engineering,China University of Geosciences,Wuhan,Hubei 430074,China)

机构地区：[1]石河子大学农学院,新疆石河子832003 [2]中国地质大学(武汉)地理与信息工程学院,湖北武汉430074

出　　处：《石河子大学学报（自然科学版）》2021年第6期733-740,共8页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金项目(31460187)。

摘　　要：生态安全在保障极端干旱区人工绿洲城市应对生态环境威胁的重要性日益凸显。本文以快速城市化的新疆兵团屯垦戍边新城昆玉市所处的区域环境为研究对象,充分利用遥感技术与GIS优势,选取与其生态安全密切相关的9个关键生态因子构建PSR模型,从时空视角综合评价昆玉市的生态安全等级。结果表明:1.2014—2018年昆玉市生态安全度大幅上升,较高生态安全区域面积增幅为4.5%,低生态安全区域面积占比降幅为9.31%,呈逐年稳定提升的趋势,但整体水平依旧偏低。2.近5年来昆玉市生态安全空间分布差异较大,西北部生态安全等级明显提升,呈“市辖中部高,西南部低”的空间分布特征,由内向外围绕城市外围防护林呈环状递减。3.Ⅳ级响应面积占比由33.25%骤降至21.24%,说明荒漠化治理措施明显提升了昆玉市生态安全等级,可作为今后区域生态安全优化的决策支持。The importance of ecological security in protecting artificial oasis cities in extreme arid areas respond to the ecological environmental threats has become increasingly prominent.This study took Kunyu City,a new city of the rapid urbanization in Xinjiang production and construction corps(XPCC)as the research object,maked full use of the advantages of remote sensing technology and GIS,and selected 9 key ecological factors closely related to its ecological security to build a PSR model,For Kunyu city comprehensive evaluation of the urban eco-security level in the past five years from^(2)014 to 2018.The results showed that:1.From 2014 to 2018,the ecological safety of Kunyu City increased significantly,the area of higher ecological safety increased by 4.5%,and the area of low ecological safety decreased by 9.31%,showing a steadily increasing trend year by year,but The overall level is still low.2.The spatial distribution of ecological security in Kunyu City has been quite different in the past five years.The level of ecological security in the northwest has increased significantly,showing a spatial distribution characteristic of“high in the middle of the municipality and low in the southwest”.The degree of ecological safety decreases from the inside to the outside around the outer protection forest of the city.3.The proportion of Grade IV response area dropped from^(3)3.25%to 21.24%,It shows that the desertification control measures promoted in 2016 have significantly improved the ecological security level of Kunyu City,which can be used as a decision support for the optimization of regional ecological security in the future.

关 键 词：新疆兵团新城 生态安全评价 PSR模型 GIS 昆玉市 

分 类 号：X826[环境科学与工程—环境工程] S731[农业科学—林学]