黄土高原生态系统服务时空变化及权衡与协同研究
马世瑛 , 陈英 , 裴婷婷 , 吉珍霞 , 谢保鹏 , 张春娥
甘肃农业大学学报 ›› 2023, Vol. 58 ›› Issue (06) : 189 -200.
黄土高原生态系统服务时空变化及权衡与协同研究
Investigation of spatio-temporal changes and trade-offs and synergies of ecosystem services in the Loess Plateau
目的 黄土高原是典型的环境脆弱区,探究经济发展背景下黄土高原生态系统服务的时空分异特征及权衡与协同关系,为实现区域经济和生态环境可持续发展提供理论依据。 方法 应用InVEST模型,利用遥感数据和社会经济数据,量化评估了2000~2018年黄土高原五期生境质量,碳储存,土壤保持和粮食供给四项服务的时空格局变化,采用相关性分析探究各服务间的权衡与协同关系,并在此基础上识别了黄土高原多重生态系统服务热点区。 结果 2000~2018年黄土高原生境质量指数均值呈上升态势,增幅为3.16%,碳储量增加了7.8×107t,土壤保持量增幅为25.16%,粮食供给下降显著,降幅为9.97%。各项生态系统服务间相关系数均低于0.6,且通过显著性检验,相关系数年际变化小,生境质量、碳储存和土壤保持三项服务间互为协同关系,粮食供给与其他三项服务呈权衡关系。研究期内黄土高原1类热点区面积基本保持稳定,2类热点区面积共增加3.53%,3类热点区面积占比小,变化不显著,非热点区面积下降显著,不存在4类热点区。高值区分布在东南和西南部,中部和西北部属于低值区。 结论 预期可为全球变化和经济发展下黄土高原生态系统服务的健康发展提供科技支撑和相关理论参考。
Objective The Loess Plateau is a typical ecologically fragile area. To explore the temporal and spatial differentiation characteristics,trade-offs and synergies of ecosystem services in the Loess Plateau under the background of economic development,provide a theoretical basis for the sustainable development of regional economy and ecological environment. Method The InVEST model is applied,and remote sensing data and socio-economic data are used to quantitatively assess the changes in the spatial and temporal patterns of the four services of habitat quality,carbon storage,soil conservation,and food supply in the five phases of the Loess Plateau from 2000 to 2018.Correlation analysis was used to examine each service.The trade-offs and synergies between them were identified,and on this basis,several ecosystem service hotspots on the Loess Plateau were identified. Result From 2000 to 2018,the average local quality index of the Loess Plateau showed an upward trend,with an increase of 3.16%,carbon storage increased by 7.8×107 t,soil retention increased by 25.16%,and food supply decreased significantly,with a decrease of 9.97%.The correlation coefficients of various ecosystem services are all lower than 0.6,and through the significance test,the inter-annual variation of the correlation coefficient is small,and the three services of habitat quality,carbon storage and soil conservation are synergistic. The three services are in a trade-off relationship.During the study period,the area of Type 1 hotspots in the Loess Plateau remained basically stable,the area of Type 2 hotspots increased by 3.53%,the area of Type 3 hotspots accounted for a small proportion,and the change was not significant,the area of non-hotspots decreased significantly,and there was no 4 The high-value areas are distributed in the southeast and southwest,and the central and northwest areas belong to the low-value areas. Conclusion This study is expected to provide scientific and technological support and related theoretical references for the healthy development of ecosystem services in the Loess Plateau under global change and economic development.
生态系统服务 / InVEST模型 / 权衡与协同 / 热点区 / 黄土高原
ecosystem services / InVEST model / trade-offs and synergies / hotspots / Loess Plateau
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甘肃省教育厅优秀研究生“创新之星项目”(2021CXZX-393)
甘肃省高校创新基金项目(2020B-117)
甘肃农业大学人才专项基金(2017RCZX-35)
青年导师扶持基金项目(GAU-QDFC-2021-06)
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