中国长江流域生态系统服务价值的时空变化及其对土地利用变化的响应

IF 2.6 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
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引用次数: 0

摘要

摘要 土地利用和土地覆被变化(LUCC)对生态系统服务价值具有重要影响。长江流域是中国重要的生态敏感区,土地利用变化迅速。如何认识土地利用变化对生态系统服务价值的影响,对生态环境保护利用具有重要意义。本研究基于 2001-2018 年长江流域土地利用数据和修订后的单位面积生态系统服务价值。具体采用鱼网法、空间自相关分析法、高低聚类法和热点法分析了长江流域土地利用变化和生态系统服务价值的时空变化特征以及土地利用变化对生态系统服务价值的影响。结果表明,长江流域以森林、草地和耕地为主,其中草地面积最大,约占流域面积的 60%。城市和建设用地的扩大主要是由于占用了城镇周围的草地和耕地。在整个研究期间,长江流域的 ESV 增加了约 3307 亿元人民币,其中草地和森林对 ESV 的贡献最大。长江流域的 ESV 主要由调节服务和支持服务贡献,其次是供给服务。调节服务的增加主要是由于湿地面积的增加,而支持服务的增加则是由于森林面积的不断扩大。长江流域生态系统服务价值的空间分布呈正相关,研究区生态系统服务价值具有空间聚集性和显著的时空分异性。研究结果可为长江流域土地利用结构优化和生态环境保护提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatiotemporal Variation of Ecosystem Services Value and its Response to Land Use Change in the Yangtze River Basin, China

Abstract

Land use and land cover change (LUCC) have a significance influence on ecosystem services value. The Yangtze River Basin is an important ecologically sensitive area in China, and has experienced rapid land use change. How to understand the impact of land use change on ecosystem service value is of great significance for the utilization of ecological environment protection. In this study, based on the 2001–2018 land use data in the Yangtze River Basin and the revised ecosystem service value per unit area. The Land use change were analyzed and the ecosystem service value (ESV) were estimated in the Yangtze River Basin, Specifically, the spatiotemporal variation characteristics of ESV and the influence of LUCC on ESV were analyzed by using fishnet method, spatial autocorrelation analysis, high-low clustering, and hotspots methods. The results showed that the Yangtze River basin was dominated by forests, grasslands and croplands, with grasslands covering the largest area, about 60% of the basin. The expansion of urban and construction land was mainly due to the occupation of grassland and farmland around towns. ESV in the Yangtze River Basin increased by about 330.7 billion RMB, with grasslands and forests contributing the most to ESV throughout the study period. ESV in the Yangtze River Basin was mainly contributed by regulating services and supporting services, followed by supply services. The increase of regulating services was mainly due to the increase of wetland area, and the increase of supporting services came from the continuous expansion of forest area. The spatial distribution of ESV in the Yangtze River basin was positively correlated, with spatial aggregation and significant spatiotemporal differentiation of ecosystem service values in the study area. The results of the study can provide a reference for the optimization of land use structure and ecological environmental protection in the Yangtze River basin.

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来源期刊
CiteScore
5.40
自引率
0.00%
发文量
104
审稿时长
1.7 months
期刊介绍: International Journal of Environmental Research is a multidisciplinary journal concerned with all aspects of environment. In pursuit of these, environmentalist disciplines are invited to contribute their knowledge and experience. International Journal of Environmental Research publishes original research papers, research notes and reviews across the broad field of environment. These include but are not limited to environmental science, environmental engineering, environmental management and planning and environmental design, urban and regional landscape design and natural disaster management. Thus high quality research papers or reviews dealing with any aspect of environment are welcomed. Papers may be theoretical, interpretative or experimental.
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