基于Google Earth Engine的洱海流域建成区范围及生态质量变化分析

doi:10.14088/j.cnki.issn0439-8114.2024.02.030

湖北农业科学 ›› 2024, Vol. 63 ›› Issue (2): 199-204.doi: 10.14088/j.cnki.issn0439-8114.2024.02.030

基于Google Earth Engine的洱海流域建成区范围及生态质量变化分析

郑舒元^1,2, 陈星宇³, 海燕^1,2, 王建雄^1,2

1.云南农业大学,昆明 650201;
2.云南省高校农业遥感与精准农业工程研究中心,昆明 650201;
3.西南林业大学经济管理学院,昆明 650224

收稿日期:2022-09-13 出版日期:2024-02-25 发布日期:2024-03-14
通讯作者: 王建雄（1975-）,男,云南玉溪人,教授,博士,主要从事资源与环境遥感研究,（电话）13608873306（电子信箱）jianxiongw@126.com。
作者简介:郑舒元（1997-）,男,云南玉溪人,硕士,主要从事资源与环境遥感研究,（电话）15261805767（电子信箱）952012141@qq.com。
基金资助:
国家自然科学基金项目（41867040）

Analysis of built-up area range and ecological quality changes in the Erhai Basin based on Google Earth Engine

ZHENG Shu-yuan^1,2, CHEN Xing-yu³, HAI Yan^1,2, WANG Jian-xiong^1,2

1. Yunnan Agricultural University, Kunming 650201,China;
2. Agricultural Remote Sensing and Precision Agriculture Engineering Research Center of Yunnan Universities, Kunming 650201,China;
3. College of Economics and Management,Southwest Forestry University, Kunming 650224,China

Received:2022-09-13 Online:2024-02-25 Published:2024-03-14

摘要/Abstract

摘要： 以洱海流域为研究区,借助Google Earth Engine云平台,利用Landsat 8 OLI系列影像,合成研究区域的增强的指数型建筑指数（EIBI）并对洱海流域建成区进行提取,再对研究区域遥感生态指数进行合成,通过对建成区范围与流域范围内遥感生态指数进行空间相关分析,从而对2014—2021年洱海流域及其建成区进行生态评估。结果表明,EIBI可有效增强建筑信息,使用EIBI可有效、准确地提取研究区域建成区,经过EIBI提取,洱海流域2014—2021年建成区扩张面积共14.712 km²;2014—2021年洱海流域生态明显改善,遥感生态指数增加0.008,其上升速率为0.001/年,流域内超过65%的区域生态得到改善;洱海流域建成区与生态未得到改善区域大致匹配,建成区经过生态修复后生态质量未见显著提升,且建成区生态质量呈逐年下降趋势,说明建成区对环境改善具有阻力。

关键词: 洱海流域, 增强的指数型建筑指数, 遥感生态指数, Google Earth Engine, 流域环境

Abstract: Taking Erhai Basin as the research area, with the help of Google Earth Engine cloud platform and Landsat 8 OLI series images, the enhanced index-based build-up index （EIBI） of the research area was synthesized and the built-up areas in Erhai Basin was extracted. Then, the remote sensing-based ecological index of the study area was synthesized. Through the spatial correlation analysis of the remote sensing-based ecological index of the built-up area and the basin, the ecological assessment of Erhai Basin and its built-up area from 2014 to 2021 was carried out. The results showed that the EIBI could effectively enhance the building information. Using EIBI could effectively and accurately extract the built-up area of the study area. After EIBI extraction, the expansion area of the built-up area of Erhai Basin from 2014 to 2021 was 14.712 km². From 2014 to 2021, the ecology of Erhai Basin was significantly improved, the remote sensing ecological index increased by 0.008, with an increase rate of 0.001/year, and more than 65% of the regional ecology in the basin was improved. The built-up area in Erhai Basin roughly matched the area where the ecology had not been improved. The ecological quality of the built-up area had not been significantly improved after ecological restoration, and the ecological quality of the built-up area showed a downward trend year by year, indicating that the built-up area had resistance to environmental improvement.

Key words: Erhai Basin, enhanced index-based built-up index, remote sensing-based ecological index, Google Earth Engine, basin environment

中图分类号:

P237
X321

郑舒元, 陈星宇, 海燕, 王建雄. 基于Google Earth Engine的洱海流域建成区范围及生态质量变化分析[J]. 湖北农业科学, 2024, 63(2): 199-204.

ZHENG Shu-yuan, CHEN Xing-yu, HAI Yan, WANG Jian-xiong. Analysis of built-up area range and ecological quality changes in the Erhai Basin based on Google Earth Engine[J]. HUBEI AGRICULTURAL SCIENCES, 2024, 63(2): 199-204.

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基于Google Earth Engine的洱海流域建成区范围及生态质量变化分析

Analysis of built-up area range and ecological quality changes in the Erhai Basin based on Google Earth Engine

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