生态功能区土地利用变化及其驱动因素:中国甘肃省河东地区案例研究

IF 2.7 3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 土地利用和植被变化(LUCC)对于提供生态系统服务非常重要。最近,越来越多的研究将土地利用和植被变化过程与不同尺度的生态系统服务和人类福祉联系起来。然而,在生态功能区,土地利用的动态及其驱动因素没有得到足够的重视,特别是在基于长时间序列量化气候变化和人类活动对土地利用的动态作用方面。本研究利用地理空间分析和地理探测器,研究了甘肃省河东地区 1990 年至 2020 年土地利用模式的时间动态及其内在驱动因素。结果表明,草地、耕地和林地合计约占土地总面积的 99%。耕地最初有所增加,2000 年后有所减少,草地则在波动中减少。相比之下,林地和建设用地不断扩大,净增长面积分别为 6235.2 平方公里和 455.9 平方公里。从 1990 年到 2020 年,耕地转变为草地,两者整体转变为林地。建设用地的扩张主要来源于耕地。从 2000 年到 2005 年,土地利用经历了强化的时间动态变化,相对活跃的区域从中部地区向东南部地区转移。粮食产量、经济因素和降水量是造成大部分土地利用变化的主要因素。1995 年之前,气候对土地利用变化的影响较大,1995-2000 年期间,畜牧业的影响接踵而至,2000 年之后,谷物产量和国内生产总值(GDP)的影响紧随其后。此外,农业和畜牧业活动加上气候变化,通过与人口和经济因素的相互作用,在 2000 年后表现出更强的增强效应。这些模式与 1999 年以来中国的生态恢复项目密切相关。这项研究表明,人类活动与气候变化之间的协同作用对于通过生态功能区的生态模式优化土地利用非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Land use change and its driving factors in the ecological function area: A case study in the Hedong Region of the Gansu Province, China

Abstract

Land use and cover change (LUCC) is important for the provision of ecosystem services. An increasing number of recent studies link LUCC processes to ecosystem services and human well-being at different scales recently. However, the dynamic of land use and its drivers receive insufficient attention within ecological function areas, particularly in quantifying the dynamic roles of climate change and human activities on land use based on a long time series. This study utilizes geospatial analysis and geographical detectors to examine the temporal dynamics of land use patterns and their underlying drivers in the Hedong Region of the Gansu Province from 1990 to 2020. Results indicated that grassland, cropland, and forestland collectively accounted for approximately 99% of the total land area. Cropland initially increased and then decreased after 2000, while grassland decreased with fluctuations. In contrast, forestland and construction land were continuously expanded, with net growth areas of 6235.2 and 455.9 km2, respectively. From 1990 to 2020, cropland was converted to grassland, and both of them were converted to forestland as a whole. The expansion of construction land primarily originated from cropland. From 2000 to 2005, land use experienced intensified temporal dynamics and a shift of relatively active zones from the central to the southeastern region. Grain yield, economic factors, and precipitation were the major factors accounting for most land use changes. Climatic impacts on land use changes were stronger before 1995, succeeded by the impact of animal husbandry during 1995–2000, followed by the impacts of grain production and gross domestic product (GDP) after 2000. Moreover, agricultural and pastoral activities, coupled with climate change, exhibited stronger enhancement effects after 2000 through their interaction with population and economic factors. These patterns closely correlated with ecological restoration projects in China since 1999. This study implies the importance of synergy between human activity and climate change for optimizing land use via ecological patterns in the ecological function area.

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来源期刊
Journal of Arid Land
Journal of Arid Land ENVIRONMENTAL SCIENCES-
CiteScore
4.70
自引率
6.70%
发文量
768
审稿时长
3.2 months
期刊介绍: The Journal of Arid Land is an international peer-reviewed journal co-sponsored by Xinjiang Institute of Ecology and Geography, the Chinese Academy of Sciences and Science Press. It aims to meet the needs of researchers, students and practitioners in sustainable development and eco-environmental management, focusing on the arid and semi-arid lands in Central Asia and the world at large. The Journal covers such topics as the dynamics of natural resources (including water, soil and land, organism and climate), the security and sustainable development of natural resources, and the environment and the ecology in arid and semi-arid lands, especially in Central Asia. Coverage also includes interactions between the atmosphere, hydrosphere, biosphere, and lithosphere, and the relationship between these natural processes and human activities. Also discussed are patterns of geography, ecology and environment; ecological improvement and environmental protection; and regional responses and feedback mechanisms to global change. The Journal of Arid Land also presents reviews, brief communications, trends and book reviews of work on these topics.
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