摘要
为探究秦岭西安段生态系统服务的时空演变特征及其权衡/协同关系,基于InVEST模型,定量评估2003—2023年秦岭西安段的产水、土壤保持、碳储量以及粮食供给这4项生态系统服务的时空演变格局,并结合Spearman相关系数与地理加权回归(geographically weighted regression, GWR),识别与量化生态系统服务间的权衡/协同关系;最后,分析土地利用变化对生态系统服务的影响。结果表明:(1)产水量和土壤保持量总体呈现先迅速减少后缓慢增加的趋势,碳储量和粮食供给量表现为缓慢减少;(2)产水与土壤保持、碳储量表现为协同关系,碳储量与土壤保持表现为协同关系,粮食供给与产水、土壤保持、碳储量均呈权衡关系;(3)研究区林地与草地面积增加导致产水量减少,建设用地扩张与耕地资源流失直接引发研究区的碳储量降低,林地面积的增加有助于土壤保持。研究结果可为秦岭地区生态环境保护及可持续发展提供科学依据。
This study aims to investigate the spatiotemporal evolution and trade-off/synergy relationships of ecosystem services in the Xi'an section of the Qinling Mountains.To this end,it quantitatively assessed the spatiotemporal evolution patterns of four ecosystem services-water yield,soil conservation,carbon reserves,and food supply-from 2003 to 2023 based on the integrated valuation of ecosystem services and trade-offs(InVEST)model.By integrating Spearman's rank correlation coefficient and geographically weighted regression(GWR),this study identified and quantified trade-off/synergy relationships among ecosystem services.Finally,the impacts of changes in land use on ecosystem services were analyzed.The results showed that water yield and soil conservation generally showed a rapidly decreasing trend followed by a slow increase,while carbon reserves and food supply exhibited a slow decline.In addition,synergistic relationships were observed between water yield and soil conservation,between water yield and carbon reserves,and between carbon reserves and soil conservation.In contrast,trade-off relationships were identified between food supply and water production,soil conservation,and carbon reserves.In the study area,increases in forestland and grassland led to a diminution in water yield.The expansion of construction land and the loss of arable land resources directly triggered a reduction in carbon reserves,while an increase in forestland contributed to soil conservation.These findings can provide a scientific basis for the eco-environmental protection and sustainable development of the Qinling area.
作者
张怡雯
李凤霞
张睿
冯晓刚
李萌
胡墨清
ZHANG Yiwen;LI Fengxia;ZHANG Rui;FENG Xiaogang;LI Meng;HU Moqing(School of Resources Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;School of Architecture,Xi’an University of Architecture and Technology,Xi’an 710055,China)
出处
《自然资源遥感》
北大核心
2025年第6期191-200,共10页
Remote Sensing for Natural Resources
基金
国家自然科学基金青年基金项目“黄土高原绿地景观格局时空变异特征及其对碳汇响应的机制研究”(编号:51608419)
陕西省社会科学基金项目“乡村振兴驱动的传统村落数字记忆建构研究”(编号:2023F013)共同资助。
关键词
土地利用变化
生态系统服务
InVEST模型
权衡/协同
land use change
ecosystem service
integrated valuation of ecosystem services and trade-offs(In-VEST)model
tradeoff/synergy
