Quantifying landscape pattern and ecosystem service value changes: A case study at the county level in the Chinese Loess Plateau
Quantifying landscape pattern and ecosystem service value changes: A case study at the county level in the Chinese Loess Plateau
复制标题
景观格局与生态系统服务价值变化的定量分析--以黄土高原县域为例
DOI：
10.1016/j.gecco.2020.e01110
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发表时间：
2020-09
影响因子：
4
通讯作者：
Jing Zhang;Mei Qu;Cheng Wang;Jun Zhao;Yang Cao
中科院分区：
文献类型：
--
作者：
Jing Zhang;Mei Qu;Cheng Wang;Jun Zhao;Yang Cao
黄土高原生态修复工程的实施，使生态环境得到明显改善，农村土地利用结构发生了显著变化。因此，必须对景观格局和生态系统服务价值的变化进行定性和量化，特别是在县一级，以便为当地决策者提供可持续的土地利用计划。以黄土高原典型丘陵沟壑区永寿县为研究对象，利用遥感影像绘制了1985、1995、2005和2015年土地利用图，并利用空间尺度对景观格局变化进行了量化分析。采用利益转移法估计ESV的变化。结果表明：（1）草地、林地和耕地是主要的土地利用类型，其中林地和草地面积增加最多。(2)景观格局变得更加支离破碎，连通性和可达性下降。(3)总的ESV增加了350万元，主要是由于草原ESV增加;同时，监管和支持服务之间存在协同作用，供应服务和监管之间存在权衡。(4)土地利用类型和景观格局的变化对生态承载力有显著的正向影响。研究结果可为县级土地利用规划和景观结构调整规划的制定提供科学的决策服务，确保生态系统的可持续管理。
Implementation of ecological restoration projects in the Chinese Loess Plateau has improved the ecological environment significantly, and altered the structure of rural land use dramatically. Therefore, it is critical to characterize and quantify the changes in landscape patterns and ecosystem service value (ESV), especially at the county level, to provide sustainable land-use plans to local policymakers. This study mapped land use for 1985, 1995, 2005 and 2015 by using remote sensing imagery of Yongshou County, a typical hilly-gully region in Loess Plateau, and quantified the changes in landscape patterns by using spatial metrics. It employed the benefit transfer method to estimate changes in ESV. The results showed the following: (1) Grassland, forestland and cropland were the main land-use types, with the most increased area in forestland and grassland. (2) The landscape pattern was becoming more fragmented, and connectivity and accessibility decreased. (3) The total ESV increased by 3.5 million RMB, mainly because of increased ESV in grassland; meanwhile, synergies existed among regulation and support services, and trade-offs existed among supply services and regulation. (4) The changes in land-use types and landscape patterns had significant positive effects on the ESV. These results on ESV change with land-use support scientific decision-making services for the formulation of land-use planning and landscape structure adjustment plans at the county level to ensure sustainable management of ecosystems.