Spatiotemporal evolution of karst rocky desertification and its driving factors on a large spatial scale utilizing google earth engine

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Earth Sciences Pub Date : 2025-05-13 DOI:10.1007/s12665-025-12282-5

Sangui Yi, Yuanhe Huang, Zongling Liu, Fangmin Long, Shu Li, Lishuang Sun, Lvjing Luo, Hongxin Su

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引用次数: 0

Abstract

Karst rocky desertification (KRD) profoundly impacts the ecological health and sustainable development of karst areas. However, few studies have examined its evolution and driving factors on a large spatial scale. This research analyzed the KRD’s evolution and driving factors in southwestern China from 1990 to 2020 using Google Earth Engine (GEE). The main results were as follows: 1) Over the past three decades, KRD evolution demonstrated a trend of general improvement but localized deterioration. 2) Area transitions mainly occurred between non-rocky desertification (NRD) and light rocky desertification (LRD) in all periods, with the most significant degradation manifesting as the shift from NRD to LRD. 3) Among the single factors, precipitation consistently had the greatest contribution. Key interacting factors included combinations of precipitation and slope, precipitation and land use, slope and soil texture, and slope and wind speed. To address these findings, policymakers should implement localized KRD control projects with more focus on preventing NRD deterioration and conduct more in-depth research on the impacts of precipitation, geology, and human interference on KRD.

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基于谷歌地球引擎的大空间尺度喀斯特石漠化时空演化及其驱动因素

喀斯特石漠化深刻影响着喀斯特地区的生态健康和可持续发展。然而，很少有研究在大空间尺度上考察其演变及其驱动因素。利用谷歌Earth Engine （GEE）分析了1990 - 2020年中国西南地区KRD的演变及其驱动因素。结果表明：1)近30 a来，KRD的演变呈现出总体改善但局部恶化的趋势；②各时期的面积转换主要发生在非石漠化和轻石漠化之间，退化最显著的是由非石漠化向轻石漠化的转变。3)在单因子中，降水的贡献始终最大。关键交互因子包括降水与坡度、降水与土地利用、坡度与土壤质地、坡度与风速的组合。为了解决这些问题，决策者应该实施本地化的KRD控制项目，更多地关注防止NRD恶化，并对降水、地质和人为干扰对KRD的影响进行更深入的研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Earth Sciences 环境科学-地球科学综合

CiteScore

5.10

自引率

3.60%

发文量

494

审稿时长

8.3 months

期刊介绍： Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.