Study of an evaluation method of ecosystem vulnerability based on remote sensing in a southwestern karst mountain area under extreme climatic conditions

Bing, 郭兵 Guo; Lin, 姜琳 Jiang; Wei, 罗巍 Luo; Guang, 杨光 Yang; Ge, Dazhuan

doi:10.5846/stxb201608111651

Cited by 5 publications

(2 citation statements)

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“…When followed by a heatwave, crops may be affected, leading to reduced yields, and people may be at risk of heatstroke 41 . Especially in the southwestern region of China, with its complex terrain, relatively fragile ecosystems, and comparatively underdeveloped economy, it is more susceptible to the impact of SEPHCE, resulting in significant losses 42 . Therefore, it is essential for government to prioritize this issue and implement more urgent and effective measures to mitigate the unequal impacts of climate change on different regions while promoting sustainable development 43 .…”

Section: Discussionmentioning

confidence: 99%

Unveiling the dynamics of sequential extreme precipitation-heatwave compounds in China

Miao,

Ju,

Sun

et al. 2024

npj Clim Atmos Sci

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Amidst the escalating impacts of global warming, the occurrence and severity of compound extreme weather events have risen significantly, presenting substantial threats to both lives and property. Existing response strategies predominantly focus on individual events, often overlooking the cumulative effects rising from their inherent complexity. To address this critical gap, we conducted a thorough examination of sequential extreme precipitation–heatwave compound events (SEPHCE) in China from 1975 to 2020, utilizing data from 1929 meteorological stations. Our investigation revealed a consistent rise in the frequency and duration of SEPHCE, with a particularly notable surge since 1993. Furthermore, shorter interval events disproportionately affected the regions of southwestern and southeast coastal China. Furthermore, SEPHCE onset times exhibited advancement, and the endings were delayed, thereby intensifying the overall trend. These findings underscore the pressing need to prioritize effective planning and adaptation strategies to mitigate the impact of these compound event, while also addressing the potential exacerbation of inequality resulting from climate change.

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Section: Discussionmentioning

confidence: 99%

Unveiling the dynamics of sequential extreme precipitation-heatwave compounds in China

Miao,

Ju,

Sun

et al. 2024

npj Clim Atmos Sci

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“…This may be due to the differences in KDC measures, leading to different ecological restoration effects and different degrees of vulnerability. Guo et al (2017) analyzed the vulnerability level and influencing factors were analyzed of mountain ecosystem in Southwest China Karst using the remote sensing method, and found that the vulnerability of regions with strong karst development, low vegetation coverage, and high bedrock exposure rate was higher than that of regions with high vegetation coverage, low karst desertification and better ecological environment in karst mountain areas in southwest China. The results of this study are consistent with the actual vulnerability of the village ecosystems in the three KDC areas.…”

Section: Comparison With Previous Studiesmentioning

confidence: 99%

Village ecosystem vulnerability in karst desertification control: evidence from South China Karst

et al. 2023

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Against the background of global environmental changes and the intensification of human activity, the village ecosystem faces enormous challenges. In particular, the rural areas in South China Karst face serious problems, such as karst desertification and human–land conflicts. In recent decades, the Chinese government and scientific researchers have committed to controlling karst desertification. However, village ecosystems in the context of karst desertification control (KDC) remain fragile. To promote the sustainable development of villages in KDC, this study considered village ecosystems in different karst desertification areas as study cases. Based on the model of susceptibility-exposure-lack of resilience, we constructed an index system of vulnerability research, used the entropy method to determine the weight, and introduced a contribution model to clarify the vulnerability level and vulnerability driving factors to recommend related governance strategies. We found that (1) the village ecosystem vulnerability levels under KDC were different. Village ecosystems were mildly vulnerable in non-potential KDC areas, moderately vulnerable in potential-mild areas, and moderately and highly vulnerable in moderate–severe KDC areas. (2) The combined effects of the natural environment and human activity have led to the vulnerability of village ecosystems in KDC in South China Karst. Among them, topography, climate, forest coverage, landscape pattern, soil erosion, karst desertification, economic development level, and production and living activity are the main factors affecting the village ecosystem vulnerability of KDC in South China Karst, and the differences in these factors lead to different village ecosystem vulnerability levels. (3) We designed adaptive governance strategies for village ecosystems based on the factors influencing the characteristics and vulnerability of different karst desertification areas, with the primary goal of sustainable development. They provide a decision-making basis for promoting sustainable development of the village ecosystems in KDC.

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Sustainable Agricultural Development Models of the Ecologically Vulnerable Karst Areas in Southeast Yunnan from the Perspective of Human–Earth Areal System

Xiao-qing

Wang

et al. 2022

Land

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Rocky desertification in ecologically-fragile karst areas limit regional socio-economic development in the face of significant human–earth conflict. Coordination of ecological restoration and agricultural development is critical for sustainable development in karst areas. From the perspective of the human–earth areal system, the framework of sustainable agricultural development was proposed in typically karst areas. We integrated principles of ecological vulnerability, resource and environmental carrying capacity, agricultural foundation, suitability of agricultural land, and the farmers’ willingness. In this study, we found the ecological vulnerability of Guangnan County was slight, but the proportion of moderate and severe vulnerability areas was high, with significant differences between the two sides of the line “Zhe (Zhetu)-Lian (Liancheng)-Yang (Yang Liu-jing)-Ban (Banbang)”. Then, we divided Guangnan County into three ecologically vulnerable zones. Following that, we proposed sustainable agricultural models for various zones. In slightly to mildly vulnerable zones, we propose constructing economic–ecological agricultural models, including woody oil, plateau characteristic fruiting forest, ecological tea plantations, suburban agriculture, and cultural–ecological tourism. In moderately to severely vulnerable zones, we recommend developing a stereoscopic agriculture model that combines planting and breeding, vegetation restoration, and herbivorous animal husbandry. In extremely vulnerable zones, we suggest constructing an ecologically natural restoration model and an agricultural ecological–tourism model. Our research provides references for ecological restoration, agricultural development, poverty alleviation consolidation, and rural revitalization in ecologically vulnerable karst areas of southeast Yunnan and similar regions.

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Study of an evaluation method of ecosystem vulnerability based on remote sensing in a southwestern karst mountain area under extreme climatic conditions

Cited by 5 publications

References 0 publications

Unveiling the dynamics of sequential extreme precipitation-heatwave compounds in China

Unveiling the dynamics of sequential extreme precipitation-heatwave compounds in China

Village ecosystem vulnerability in karst desertification control: evidence from South China Karst

Sustainable Agricultural Development Models of the Ecologically Vulnerable Karst Areas in Southeast Yunnan from the Perspective of Human–Earth Areal System

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