气候变化领域集成服务门户(CCPortal): Analysis of Spatiotemporal Dynamics of Land Desertification in Qilian Mountain National Park Based on Google Earth Engine

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DOI	10.3390/ijgi13040117
	Analysis of Spatiotemporal Dynamics of Land Desertification in Qilian Mountain National Park Based on Google Earth Engine
	Chen, Xiaowen; Wang, Naiang; Peng, Simin; Meng, Nan; Lv, Haoyun
发表日期	2024
EISSN	2220-9964
起始页码	13
结束页码	4
卷号	13 期号:4
英文摘要	Notwithstanding the overall improvement in the ecological condition of the Qilian Mountains, there are localized occurrences of grassland degradation, desertification, and salinization. Moreover, timely and accurate acquisition of desertification information is a fundamental prerequisite for effective monitoring and prevention of desertification. Leveraging the Google Earth Engine (GEE) platform in conjunction with machine learning techniques, this study aims to identify and extract the spatiotemporal dynamics of desertification in the Qilian Mountain National Park (QMNP) and its surroundings (QMNPs) spanning from 1988 to 2023. Results show that based on the random forest algorithm, the multi-index inversion methodology achieves a commendable overall accuracy of 91.9% in desertification extraction. From 1988 to 2023, the gravity center of light desertification shifts southeastward, while centers characterized by moderate, severe, and extremely severe desertification display a westward retreat with fluctuations. The area of sandy land shows an expansion trend in the medium term, but after 2018, desertification in QMNPs reversed. As of 2023, the sandy land area measured 16,897.35 km2, accounting for 18.29% of the total area of QMNPs. The insights garnered from this study provide a valuable reference for regional desertification prevention and control in the future.
英文关键词	Qilian Mountain National Park; land desertification; machine learning; Google Earth Engine
语种	英语
WOS研究方向	Computer Science ; Physical Geography ; Remote Sensing
WOS类目	Computer Science, Information Systems ; Geography, Physical ; Remote Sensing
WOS记录号	WOS:001210666700001
来源期刊	ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295939
作者单位	Lanzhou University; Lanzhou University; Lanzhou University
推荐引用方式 GB/T 7714	Chen, Xiaowen,Wang, Naiang,Peng, Simin,et al. Analysis of Spatiotemporal Dynamics of Land Desertification in Qilian Mountain National Park Based on Google Earth Engine[J],2024,13(4).
APA	Chen, Xiaowen,Wang, Naiang,Peng, Simin,Meng, Nan,&Lv, Haoyun.(2024).Analysis of Spatiotemporal Dynamics of Land Desertification in Qilian Mountain National Park Based on Google Earth Engine.ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,13(4).
MLA	Chen, Xiaowen,et al."Analysis of Spatiotemporal Dynamics of Land Desertification in Qilian Mountain National Park Based on Google Earth Engine".ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 13.4(2024).