An Jianji,Yangyue,Yuan Xuefeng,et al.Spatial and temporal variation, spatial agglomeration and trade-offs and synergies of ecosystem services in northern Shaanxi[J].Research of Soil and Water Conservation,2025,32(01):316-327,335.[doi:10.13869/j.cnki.rswc.2025.01.024]
陕北地区生态系统服务的时空演变、集聚特征及权衡与协同关系
- Title:
- Spatial and temporal variation, spatial agglomeration and trade-offs and synergies of ecosystem services in northern Shaanxi
- 文章编号:
- 1005-3409(2025)01-0316-12
- Keywords:
- ecosystem services; spatial and temporal variation; spatial agglomeration; trade-offs and synergies; northern Shaanxi
- 分类号:
- X171.1
- 文献标志码:
- A
- 摘要:
- [目的]揭示2000—2020年陕北地区典型生态系统服务的变化特征,丰富生态系统服务的系统研究框架,为陕北地区的可持续发展提供科学参考。[方法]借助INVEST模型、RUSLE方程和NDVI指数量化生态系统固碳、产水、土壤保持和食物供给服务; 应用Getis-Ord G*i工具识别冷热点乡(镇、街道)的集聚特征; 应用聚类和异常值分析判断生态系统服务间权衡与协同关系的时空格局。[结果](1)2000—2020年陕北地区单位面积碳储量、产水量、土壤保持量和食物供给量增加的区域分别占10.23%,77.91%,90.44%和47.80%;(2)各类生态系统服务均呈现出集聚分布的模式(p<0.01),且高值集聚效应均有所增强,产水和食物供给服务的低值集聚效应同步增加,固碳和土壤保持服务的低值集聚效应减弱;(3)生态系统服务的相互作用关系逐渐由权衡主导过渡到由协同主导,多数生态系统服务间的权衡关系减弱、协同关系增强。[结论]陕北地区生态系统整体呈现向好趋势,但部分区域仍需因地制宜地缓解水资源短板,提高食物供给能力,促进生产与生态的协调发展。
- Abstract:
- [Objective]This study aims to reveal the characteristics of changes in typical ecosystem services in northern Shaanxi from 2000 to 2020, to enrich the systematic research framework of ecosystem services, and to provide theoretical support for the sustainable development of northern Shaanxi. [Methods]The ecosystem services including carbon sequestration, water yield, soil conservation, and food supply were quantifies through the use of the InVEST model, RUSLE equation, and NDVI index. Getis-Ord G*ianalysis was applied to identify ecosystem services' spatial agglomeration. Anselin Local Moran's I analysis was applied to assess ecosystem services' trade-offs and synergies. [Results](1)From 2000 to 2020, the regions with increases in carbon storage, water yield, soil conservation, and food supply per unit area accounted for 10.23%, 77.91%, 90.44%, and 47.80%, respectively.(2)All types of ecosystem services exhibited agglomeration distribution patterns(p<0.01), with strengthened high-value agglomeration effects and simultaneous increase in low-value agglomeration effects for water yield and food supply services, while the low-value agglomeration effects for carbon sequestration and soil conservation services weakened.(3)The interaction among ecosystem services gradually transitioned from being dominated by trade-offs to being dominated by synergies, with weakening trade-off relationships and the enhanced synergistic relationships among most ecosystem services. [Conclusion]The ecosystem in northern Shaanxi is showing a positive trend, but some towns(townships, streets)still need tailore approaches to alleviate water resource shortages, to improve food supply capabilities, and to promote coordinated development between production and ecology based on local conditions.
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备注/Memo
收稿日期:2024-04-11 修回日期:2024-04-28
资助项目:国家自然科学基金项目(42371210); 陕西省创新能力支撑计划创新团队项目(2024RS-CXTD-55); 中央高校基本科研业务费专项资金项目(30010235203)
第一作者:安健吉(2000—),男,黑龙江哈尔滨人,硕士研究生,研究方向为土地利用与生态系统服务。E-mail:anjianji416@163.com
通信作者:员学锋(1977—),男,陕西延安人,博士,教授,研究方向为土地资源管理与生态系统服务。E-mail:zyxfyun@chd.edu.cn