The constraining effects of rocky desertification on ecosystem services in the South China karst region have diminished over time

IF 5.7 1区农林科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Catena Pub Date : 2025-09-12 DOI:10.1016/j.catena.2025.109437

Ling Xiong, Rui Li, Benjin Yu, Kangning Xiong

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引用次数: 0

Abstract

Over the past two decades, the Chinese government has implemented extensive ecological protection and restoration programs in the karst regions of South China, mitigating rocky desertification (RD) and transforming the area into a global hotspot for greening. However, within the context of rocky desertification management, the nonlinear relationships between RD and ecosystem services, as well as their constraining effects, have not been effectively addressed. Moreover, the application of RD threshold in adaptive management of karst areas is still limited. This study focuses on various karst geomorphological regions in South China to elucidate the mechanisms by which RD impacts ecosystem services and to investigate the constraining effects and thresholds across different karst landscapes. Our results indicate that since the implementation of rocky desertification control projects, the regional ecological environment has significantly improved. The thresholds at which RD affects ecosystem services have increased over time, suggesting that its constraining effects have diminished. Among the four quantified ecosystem services, the thresholds for the impact on grain production services are lower in most geomorphological regions, indicating that RD imposes stronger constraints on grain production compared to other services. By evaluating ecological projects from the perspective of these constraining effects, this study provides a scientific basis for developing differentiated strategies for RD prevention and control.

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随着时间的推移，石漠化对华南喀斯特地区生态系统服务功能的制约作用逐渐减弱

在过去的20年里，中国政府在中国南方喀斯特地区实施了广泛的生态保护和修复工程，缓解了石漠化，使该地区成为全球绿化的热点地区。然而，在石漠化治理的背景下，开发开发与生态系统服务之间的非线性关系及其约束效应尚未得到有效解决。此外，RD阈值在喀斯特地区适应性管理中的应用仍然有限。本研究以华南不同喀斯特地貌区域为研究对象，探讨r&d对生态系统服务的影响机制，并探讨不同喀斯特地貌的约束效应和阈值。结果表明，石漠化治理工程实施以来，区域生态环境得到了明显改善。研发影响生态系统服务的阈值随着时间的推移而增加，表明其约束效应已经减弱。在四种量化生态系统服务中，大多数地貌区对粮食生产服务影响的阈值较低，表明与其他服务相比，开发对粮食生产的约束更强。从这些制约效应的角度对生态项目进行评价，为制定差异化的r&d防治策略提供科学依据。

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

Catena 环境科学-地球科学综合

CiteScore

10.50

自引率

9.70%

发文量

816

审稿时长

54 days

期刊介绍： Catena publishes papers describing original field and laboratory investigations and reviews on geoecology and landscape evolution with emphasis on interdisciplinary aspects of soil science, hydrology and geomorphology. It aims to disseminate new knowledge and foster better understanding of the physical environment, of evolutionary sequences that have resulted in past and current landscapes, and of the natural processes that are likely to determine the fate of our terrestrial environment. Papers within any one of the above topics are welcome provided they are of sufficiently wide interest and relevance.