基于土地利用变化的长江中游地区生态系统服务供需平衡研究
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张超正(1993—),男,湖南郴州人,博士,讲师,主要从事土地利用变化研究。E-mail:weirdozcz@163.com

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X171.1

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国家自然科学基金项目(42101307,42101263);教育部人文社会科学研究项目(21YJC630174);西北农林科技大学博士科研启动基金项目(2452023038);陕西省社会科学基金项目(2021R023);陕西省自然科学基础研究计划项目(2024JC-YBQN-0265)


Supply-Demand Balance of Ecosystem Services in the Middle Reaches of the Yangtze River Based on Land Use Change
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    摘要:

    [目的] 揭示生态系统服务供需平衡的时空特征,并进一步探究土地利用变化对生态系统服务供需平衡的双重效应及其影响机理。[方法] 选取长江中游地区作为研究对象,引入生态系统服务供需量化矩阵分析生态系统供需平衡的时空格局,并运用土地利用变化生态贡献率模型分析土地利用变化对生态系统服务供需平衡的双重影响。[结果] (1)研究期间,长江中游地区生态系统服务供需平衡状况持续恶化,主要是由建设用地大规模扩张和耕地、林地大面积缩减带来的生态系统服务供给能力减少和消费需求增加造成的。(2)长江中游地区不同类型生态系统服务供给间的关系在时间尺度上由权衡转为协同,需求和供给平衡间的协同关系在时间尺度上进一步增强,但不同类型生态系统服务供给、需求和供需平衡间的权衡或协同性质及其程度在空间尺度上却存在高度异质。(3)长江中游地区土地利用变化对生态系统服务供需平衡存在改善和恶化双重效应,且恶化效应显著大于改善效应,但引起生态系统服务及其分项服务供需改善和恶化的土地利用变化类型具有时序异质性。[结论] 应促进具有协同改善生态系统服务供需平衡的土地利用变化类型,提升与区域主体生态系统服务功能一致的土地利用类型,以及遏制具有协同恶化生态系统服务供需平衡的土地利用变化类型,以实现区域生态系统服务供需改善。

    Abstract:

    [Objective] This study was aimed to reveal the spatio-temporal characteristics of supply-demand balance of ecosystem services, and further to explore the dual effects and influencing mechanisms of land use change on the supply-demand balance of ecosystem services. [Methods] Taking the middle reaches of the Yangtze River as the research area and seleting 2000— 2018 as the research period, the quantitative matrix of supply-demand of ecosystem services was employed to analyze the spatio-temporal characteristics of the supply-demand balance of ecosystem service, and the ecological contribution rate of land use change was introduced to analyze the influencing mechanisms of land use change on the supply-demand balance of ecosystem services. [Results] (1) During the study period, the supply-demand balance of ecosystem services in the middle reaches of the Yangtze River had been continuously deteriorating, which was mainly caused by the large-scale expansion of construction land and the large-scale reduction of cultivated land and forest land, resulting in the decrease of supply capacity and the increase of consumption demand of ecosystem services. (2) The relationship between different supply of ecosystem services had changed from trade-off to synergy in time scale, and the synergy between different demand and supply-demand balance of ecosystem services had been further enhanced on the time scale, but the trade-off or synergy between supply, demand, and supply-demand balance was highly heterogeneous on the spatial scale. (3) Land use change in the MRYR had dual effects on the supply-demand balance of ecosystem services, and the deterioration effect was significantly larger than the improvement effect, but the types of land use change that cause the improvement and deterioration of supply-demand of ecosystem services and their sub-services had temporal heterogeneity. [Conclusion] Promote types of land use change that could improve the supply-demand balance of ecosystem services; promote types of land use change that are compatible with key ecosystem services; and curb types of land use change that would worsen the supply-demand balance of ecosystem services, in order to increase the sustainability of ecosystem services and improve the quality of the ecological environment.

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张超正, 孙小宇, 张寒, 邓陈宁, 赵可, 靳亚亚, 陈丹玲.基于土地利用变化的长江中游地区生态系统服务供需平衡研究[J].水土保持学报,2024,38(3):227~238

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  • 收稿日期:2023-10-17
  • 最后修改日期:2023-12-14
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  • 在线发布日期: 2024-07-03
  • 出版日期: 2024-06-28