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基于遥感生态指数的新疆干旱区博乐市生态变化分析
张乃明1, 陈冬花2,3, 邢菲4, 刘赛赛1, 栗旭升4, 李虎5
1.新疆师范大学 地理科学与旅游学院, 新疆 乌鲁木齐 830054;2.滁州学院 计算机与信息工程学院, 安徽 滁州 239000;3.乌鲁木齐北辰众星空间信息科技有限公司, 新疆 乌鲁木齐 830000;4.新疆农业大学 草业与环境科学学院, 新疆 乌鲁木齐 830052;5.滁州学院 地理信息与旅游学院, 安徽 滁州 239000
摘要:
[目的]结合遥感方法分析新疆维吾尔自治区博乐市生态变化,为该区生态保护提供理论依据。[方法]以博乐市1997年、2007年和2016年3期Landsat系列影像为数据源,提取绿度、湿度、干度和热度4个指数,通过主成分分析耦合出遥感生态指数(RSEI),对博乐市生态环境质量进行了监测和评价。[结果]研究区属于MODS (山地-绿洲-荒漠)系统,总体RSEI指数较低,由差和较差主导;1997-2016年博乐市的生态环境质量呈明显改善趋势,遥感生态指数RSEI从0.250提高到0.422,等级为优和良的比例从11.24%上升到26.20%;改善的区域面积明显大于变差的面积,改善的区域主要分布在北部山地、中部绿洲和南部天山西部北麓荒漠区域。生态环境恶化的区域主要集中在中部绿洲的耕地和城镇建设用地区域。[结论]荒漠生态建设和扩大绿洲面积对生态环境的改善有积极影响,同时也要合理配置资源和土地利用。
关键词:  生态环境质量  干旱区  遥感生态指数  生态变化  博乐市
DOI:10.13961/j.cnki.stbctb.2019.01.025
分类号:
基金项目:安徽省高校学科优秀拔尖人才学术培育项目"高分卫星大数据平台建设与产业化应用"(gxbjZD44);滁州学院科研启动基金项目"基于国产高分辨率卫星数据的西天山云杉林生物量/生产力反演与时空分析关键技术研究"(2017qd09)
Ecological Change Analysis of Bole City in Arid Regions of Xinjiang Wei Autonomous Region Based on Remote Sensing Ecological Index
Zhang Naiming1, Chen Donghua2,3, Xing Fei4, Liu Saisai1, Li Xusheng4, Li Hu5
1.College of Geography and Tourism, Xinjiang Normal University, Urumqi, Xinjiang 830000, China;2.College of Computing and Information Engineering, Chuzhou University, Chuzhou, Anhui 239000, China;3.Urumqi Beichen Zhongxing Spatial Information Technology Co., Ltd, Urumqi, Xinjiang 830000, China;4.College of Grassland and Environment Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China;5.College of Geographic Information and Tourism, Chuzhou University, Chuzhou, Anhui 239000, China
Abstract:
[Objective] This study is to analyze the ecological change in Bole City of Xinjiang Wei Autonomous Region by remote sensing method, in order to provide a theoretical basis for ecological protection. [Methods] The Landsat images of Bole City in 1997, 2007 and 2016 were collected as data sources, and four indexes including greenness, humidity, dryness and heat were extracted. The principal component analysis was applied to couple the remote sensing ecological index(RSEI), to monitor and evaluate the ecological environment quality of Bole City. [Results] The research area belongs to the mountain-oasis-desert system(MODS), and the overall RSEI was very low in 1997, 2007 and 2016. The ecological environment quality of Bole City showed a significant improvement trend from 1997 to 2016, as the RSEI increased from 0.250 to 0.422 and the proportion of excellent and good leveles increased from 11.24% to 26.20%. The improved areas were mainly distributed in the northern mountains, the central oasis, the Southern Tianshan Mountains and the western deserts at the northern foot, which were significantly larger than the degraded area. The deteriorated areas were mainly concentrated in the cultivated land and urban construction areas in the central oasis. [Conclusion] The construction of desert ecology and the expansion of oasis have a positive impact on the improvement of ecological environment. In addition, rational resource allocation and land utilization should be carried out as well.
Key words:  ecological environment quality  arid areas of Xinjiang Wei Autonomous Region  remote sensing ecdogical index  ecological change  Bole City