Wang Meng, Sun Xiaofang
School of Geography and Tourism, Qufu Normal University, Rizhao, 276800, China.
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A, Datun Road, Chaoyang District, Beijing, 100101, China.
Environ Monit Assess. 2016 Apr;188(4):248. doi: 10.1007/s10661-016-5245-z. Epub 2016 Mar 28.
Land use change can greatly alter spatial pattern and overall ecosystem service values (ESV). The goal of this study was to explore the likely effects of land use change on ESV in China. In this paper, the spatially explicit land use changes across China from 2010 to 2020 under the 2000s trend scenario and the planning scenario were projected using the Dyna-CLUE model. The ESV evaluation method was improved by adjusting the ESV coefficients using biomass data to reduce the generalization error of proxy-based method. The results revealed that between 2010 and 2020, total ESV increased by 1798 and 2215 billion RMB a(-1) under the 2000s trend scenario and the planning scenario, respectively. The spatial pattern of ESV in 2010 and 2020 presented a logical geographic distribution. The areas with ESV of 50,000 RMB ha(-1) a(-1) and higher occurred primarily in northeastern and southern China, while the areas with ESV of 5000 RMB ha(-1) a(-1) and lower were mainly located in northwestern China. The spatial differences between the two scenarios were insignificant except that the increase of ESV in southwestern China was more prominent in the planning scenario than that in the 2000s trend scenario, while the total ESV in 2020 under the planning scenario was larger than that in the 2000s trend scenario. The increase of ESV occurred mainly in northeastern, southern, and southeastern China due to forest growth and woodland expansion in 2020 compared with 2010. The results of this study can provide useful information for the public and land managers to consider.
土地利用变化会极大地改变空间格局和生态系统服务价值(ESV)的整体状况。本研究的目的是探讨土地利用变化对中国生态系统服务价值可能产生的影响。本文利用Dyna-CLUE模型预测了2010年至2020年中国在21世纪00年代趋势情景和规划情景下空间明确的土地利用变化。通过利用生物量数据调整生态系统服务价值系数,改进了生态系统服务价值评估方法,以减少基于代理方法的概括误差。结果显示,在21世纪00年代趋势情景和规划情景下,2010年至2020年期间生态系统服务价值总量分别增加了17980亿元人民币/a和22150亿元人民币/a。2010年和2020年生态系统服务价值的空间格局呈现出合理的地理分布。生态系统服务价值在50000元/公顷·a及以上的区域主要分布在中国东北和南部,而生态系统服务价值在5000元/公顷·a及以下的区域主要位于中国西北部。两种情景之间的空间差异不显著,只是规划情景下中国西南部生态系统服务价值的增加比21世纪00年代趋势情景更为突出,且规划情景下2020年的生态系统服务价值总量大于21世纪00年代趋势情景。与2010年相比,2020年生态系统服务价值的增加主要发生在中国东北、南部和东南部,原因是森林生长和林地扩张。本研究结果可为公众和土地管理者提供有用的参考信息。