The impact of land use change on the temporospatial variations of ecosystems services value in China and an optimized land use solution
The impact of land use change on the temporospatial variations of ecosystems services value in China and an optimized land use solution
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DOI：
10.1016/j.envsci.2014.07.004
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发表时间：
2014-12
影响因子：
6
通讯作者：
Wanjing Wang;Huaicheng Guo;X. Chuai;C. Dai;Li Lai;Mei Zhang
中科院分区：
文献类型：
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作者：
Wanjing Wang;Huaicheng Guo;X. Chuai;C. Dai;Li Lai;Mei Zhang
土地利用变化会影响生态系统服务价值（ESV）。在本研究中，我们利用农作物产量数据、不同陆地生态系统的ESV经验数据、土地利用数据和中国的发展政策来考察土地利用变化对ESV的影响，比较其空间差异，并利用线性规划模型优化中国的土地利用结构，使总ESV最大化。我们发现，三个沿海地区的单位ESV分配值相对内陆地区要高。中国共有21.1%的土地转为其他土地利用类型；不同地区的转化率如下：东部>东北>中南部>北部>西南>西北。土地利用变化导致ESV总量下降1.52%，主要分布在西北、东北和华北地区。减少ESV的主要转变包括大部分地区建设用地的扩张、东北地区林地的减少以及中国北部、西南和西北地区的草地退化。 2020年优化土地利用结构，新增ESV 12357亿元；与中国政府提出的综合土地利用规划相比，这一比例将增加8.05%。这一结果似乎是土地管理者可以考虑的有效方法。
Land use changes can affect ecosystem services values (ESVs). In this study, we used crop yield data, ESV empirical data for different terrestrial ecosystems, land use data, and development policies in China to examine the impact of land use changes on ESVs, to compare their spatial differences, and to optimize China's land use structure to maximize the total ESVs using a Linear Programming Model. We found that the assigned ESVs per unit in the three coastal regions presented relatively higher values than in the inland regions. A total of 21.1% of China's land has been converted to other land use types; the conversion rates for different regions indicate the following: east > northeast > mid-south > north > southwest > northwest. The total ESV decreased by 1.52% due to land use changes, which were mainly distributed in the northwestern, northeastern, and northern regions. The primary transitions that decreased ESVs, included an expansion of built-up land in most regions, decreased woodland in the northeast, and the degradation of grasslands in the northern, southwestern and northwestern regions of China. Our optimized land use structure for 2020 could increase the ESV by 1235.70 billion RMB; when compared with a comprehensive land use plan presented by Chinese government, this would increase the percentage by 8.05%. This result seems to be an effective approach for land managers to consider.