Spatiotemporal assessment and trade-offs of multiple ecosystem services based on land use changes in Zengcheng, China.
Spatiotemporal assessment and trade-offs of multiple ecosystem services based on land use changes in Zengcheng, China.
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DOI：
10.1016/j.scitotenv.2017.07.221
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发表时间：
2017-12
期刊：
影响因子：
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通讯作者：
Xiao Sun;Feng Li
中科院分区：
文献类型：
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作者：
Xiao Sun;Feng Li
在快速城市化的驱动下，土地利用变化已成为影响生态系统服务功能的重要因素。为了支持城市规划者和政策制定者的决策过程，评估与多个ES相关的时空变化至关重要。在这项研究中，我们开发了一个通用的结构，以评估在增城，中国的多种ES的变化。并提出了一种新的综合生态系统服务功能评价指标。采用相关分析法对各种ES的利弊进行了分析。研究结果表明，2003 - 2013年增城市建设用地和交通用地的快速扩张导致了城市综合消费水平的下降。虽然供水、水净化和蔬菜水果生产服务增加了，但气候调节、土壤保持、生物多样性保护、娱乐机会和粮食生产服务在这十年期间减少了。政府应实施土地利用政策和生态工程措施，以改善北方地区的土壤保持;中部地区的休闲机会;南部地区的碳储存，水净化，生物多样性保护和休闲机会。在所有备选方案中，林地缓冲和水土保持方案的CES值最高，表明应实施“生态廊道建设”和“退耕还绿色”等政策。然而，需要注意的是，由于存在显着的权衡关系，这些政策以牺牲粮食生产为代价来改善环境质量。为了最大限度地减少这种权衡，应采取更可持续的农业集约化，在不减少其他环境服务或占用更多土地的情况下增加粮食产量。本研究提出的土地利用策略和生态工程措施可为我国其他城市化地区的可持续发展提供可靠的参考。
Driven by rapid urbanization, land use change has become a significant factor influencing ecosystem services (ESs). To support the decision-making process of city planners and policy makers, assessing the spatiotemporal changes associated with multiple ESs is vital. In this study, we developed a general structure to assess the changes of multiple ESs in Zengcheng, China. A new index also was developed to measure the comprehensive ecosystem service (CES). Trade-offs of various ESs were analyzed by using correlation analysis. We then designed four alternate scenarios to explore the optimal land use strategies to increase the CES value and minimize trade-offs among various ESs. Results demonstrated that rapid expansion of built-up land and traffic land resulted in a decrease of CES in Zengcheng from 2003 to 2013. Although the water supply, water purification, and vegetable and fruit production services increased, the climate regulation, soil conservation, biodiversity protection, recreation opportunity and grain production services decreased during the ten-year period. Government should implement land use policies and ecological engineering measures to improve soil conservation in the northern region; recreation opportunity in the central region; and carbon storage, water purification, biodiversity protection and recreation opportunity in the southern region. Among all alternative scenarios, woodland buffer and soil conservation scenarios exhibit the highest CES values, indicating that policies such as the “Ecological corridor construction” project and the “Grain for Green” project should be implemented. However, a caveat is that these policies improve the ESs at the expense of food production due to significant trade-off relationships. To minimize the trade-offs, a more sustainable intensification of agriculture should be adopted to increase food production without decreasing other ESs or occupying additional land. The land use strategies and ecological engineering measures in this study can provide a reliable reference for sustainable development of other urbanized regions in China.