[1]赵管乐a,彭培好b*.基于RSEI的典例干热河谷区——四川省攀枝花市生态环境变化分析[J].山地学报,2021,(6):842-854.[doi:10.16089/j.cnki.1008-2786.000643]
　ZHAO Guanyuea,PENG Peihaob*.RSEI-Based Evaluation on Ecological Environment Changes in Typical Dry Hot Valley—Panzhihua City, Sichuan, China[J].Mountain Research,2021,(6):842-854.[doi:10.16089/j.cnki.1008-2786.000643]
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基于RSEI的典例干热河谷区——四川省攀枝花市生态环境变化分析()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2021年第6期
页码:
842-854
栏目:
山地环境
出版日期:
2021-11-25

文章信息/Info

Title:
RSEI-Based Evaluation on Ecological Environment Changes in Typical Dry Hot Valley—Panzhihua City, Sichuan, China
文章编号:
1008-2786-(2021)6-842-13
作者:
赵管乐a; 彭培好b*
成都理工大学 a.地球科学学院; b.生态资源与景观研究所,成都 610059
Author(s):
ZHAO Guanyuea;  PENG Peihaob*
a. College of Earth Sciences; b. Institute of Ecological Resources and Landscape Architecture, Chengdu University of Technology, Chengdu 610059, China
关键词:
干热河谷;  生态环境监测;  遥感生态指数(RSEI);  攀枝花市
Keywords:
dry-hot valley;  ecological environment monitoring;  Remote Sensing Ecological Index(RSEI);  Panzhihua city;  China
分类号:
X171.1; X87
DOI:
10.16089/j.cnki.1008-2786.000643
文献标志码:
A
摘要:
干热河谷地区生态系统脆弱,不当的开发利用会加剧水土流失,影响下游的生态安全,需要科学合理的生态环境评价以辅助生态环境治理。相比于其他研究方法,依托于遥感数据的RSEI指数(Remote Sensing Ecological Index)可以实现快速、大范围、多时相生态环境综合评价。四川省攀枝花市是金沙江流域典型干热河谷区,也是长江上游生态环境保护、水土流失防治的核心区域,需要开展大尺度、高时效、综合性的生态环境监测与评价。本文选取攀枝花市作为研究区域,利用1996—2020年期间6期的Landsat TM/OLI影像生成描述生态环境质量的绿度、湿度、温度以及干度4个指标,通过主成分分析构建新型遥感生态指数RSEI,分析干热河谷区生态环境质量变化。研究结果表明:(1)攀枝花市总体生态环境质量处于一般水平。6期的RSEI均值最大为0.599、最小值为0.505,总体呈现先上升再下降再上升的趋势;(2)研究区内生态环境质量以无明显变化为主体,变好(RSEI变化值大于0)区域占比大于变坏(RSEI变化小于0)区域面积,总体生态环境质量稳中向好发展;(3)干热河谷地区的RSEI的变化可能与降水量存在密切联系,干旱可能是导致自然地表RSEI值减小的重要因素。本研究成果可为攀枝花市生态环境治理提供理论依据,为其他干热河谷地区开展生态环境监测与评价提供参考。
Abstract:
Due to improper resource exploitation and fragile ecosystem in dry-hot valley of southwest China, aggravating soil erosion is posing great threats to the safety of ecosystem in the downstream of the Yangtze River basin. To protect ecological safety in southwest China, it must follow a governance of ecological environment in dry-hot valley upstream of the Jinsha River basin. Monitoring and evaluating of ecosystem is a generally precondition of regional ecological environment maintenance. Many approaches are available for ecological environment monitoring and assessment. RSEI(Remote Sensing Ecological Index)is a commonly used ecological environment quality assessment index. It is built entirely based on remote sensing data; it can carry out fast, wide-range and multi-phase comprehensive assessment for ecological environment.Panzhihua city, a typical dry-hot valley in the Jinsha River basin, China, located in the core area of national ecological environment protection and soil erosion prevention in the upper reaches of the Yangtze River, and it suffered severely soil erosion. Unfortunately, little attention was paid to this region by large-scale, high-efficiency and comprehensive ecological environment monitoring and evaluation. In this study, Panzhihua city was targeted as research subject. Four indexes, including greenness, humidity, temperature, and dryness, which can properly describe the quality of ecological environment, were selected from six Landsat TM/OLI images from 1996 to 2020. RSEI was constructed through principal component analysis(PCA)to analyze the ecosystem quality and potential changes in study area.Results are those:(1)The overall ecological environment quality of Panzhihua city was on a general level. The maximum and minimum RSEI average value in 6 phases were 0.599 and 0.505 respectively, describing a trend of first rising, following by falling, and then increasing again.(2)There were no obvious changes in ecological environment quality in most of study regions. The areas with improvement ecological environment quality were larger than those with deterioration. The overall ecological environmental quality had been improved steadily.(3)Quite possibly, the changes of RSEI in the dry-hot valley were closely related to precipitation. Drought presumably was a factor resulting in the decrease in RSEI on earth surface. Our results can provide a theoretical basis for the management of the ecological environment in Panzhihua city, and it would be reference for the monitoring and evaluation of the ecological environment in similar dry-hot valley areas.

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备注/Memo

备注/Memo:
收稿日期(Received date):2020-12-17; 改回日期(Accepted date): 2021-12-15
基金项目(Foundation item):第二次青藏高原综合科学考察研究(2019QZKK0301)。[The Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0301)]
作者简介(Biography):赵管乐(1995-),男,四川攀枝花人,硕士研究生,主要研究方向:植被与生态遥感。[ZHAO Guanyue(1995-), male, born in Panzhihua, Sichuan province, M.Sc. candidate, research on vegetation and ecological remote sensing] E-mail: 1127591705@qq.com
*通讯作者(Corresponding author):彭培好(1963-),男,山东诸城市人,博士,教授,主要研究方向:生态恢复与生态遥感。[PENG Peihao(1963-), male, born in Zhucheng, Shandong province, Ph.D., professor, research on ecological restoration and ecological remote sensing] E-mail: peihao@163.com
更新日期/Last Update: 2021-11-30