摘要
【目的】分析西南高山峡谷区的土地利用变化和不同情景下生态系统服务演变规律,能够为该地区的生态环境保护和未来发展提供理论依据。【方法】基于中国土地覆盖数据集(CLCD)分析区域内土地利用的变化规律,运用InVEST模型评估2002—2022年西南高山峡谷区4种生态系统服务(产水量、碳储存、生境质量和土壤保持量)的时空演变规律。利用PLUS模型模拟2032、2042、2052年不同情景下的土地利用空间分布格局,结合InVEST模型评估未来不同情境下西南高山峡谷区4种生态系统服务的演变规律。【结果】①2002—2022年西南高山峡谷区土地利用类型以林地和草地为主,均占总面积的44%以上,土地利用转移集中在林地、耕地、草地。②2002—2022年西南高山峡谷区4种生态系统服务的产水量降低,碳储量增加,生境质量增加,土壤保持量降低。③2032—2052年在自然发展情景下4种生态系统服务功能平均值都有所增加,耕地保护发展情景下4种生态系统服务功能平均值都有所降低,经济优先发展情景下产水量和土壤保持量降低,碳储量和生境质量增加。【结论】西南高山峡谷区地形复杂,区域内林地和草地面积较多,碳储量和生境质量整体情况较好,但大量雪域和未利用地也导致产水量、土壤保持量都降低。
[Objective]As an important ecological barrier area in China,the southwest alpine canyon region requires analysis of land use change and ecosystem services under different scenarios.This study aims to provide a theoretical basis for ecological environment protection and future development.[Method]Based on the China Land Cover Dataset(CLCD),this paper analyzed the patterns of land use change in the region,and used the InVEST model to evaluate the spatial-temporal evolution rules of 4 types of ecosystem services(water yield,carbon storage,habitat quality,soil conservation)in southwest alpine canyon region from 2002 to 2022.The PLUS model was used to simulate the spatial distribution pattern of land use in 2032,2042 and 2052 under different scenarios.And integrating the InVEST and PLUS model to evaluate the evaluated law of 4 types of ecosystem services in southwest alpine canyon region under different scenarios.[Result](1)From 2002 to 2022,the land use types in the southwest alpine canyon region were mainly forest and grassland,each accounting for more than 44%of the total area.During the period,the transfer of land use was concentrated in forest,cropland and grassland.(2)From 2002 to 2022,the average water yield in southwestern alpine canyon region decreased,the average carbon storage increased,the average habitat quality improved,the average soil conservation decreased.(3)From 2032 to 2052,under the natural development scenario,the average values of 4 types of ecosystem service functions all increased;under the cultivated land protection scenario,the average values of 4 types of ecosystem service functions all decreased;under the economic priority scenario,the average values of water yield and soil conservation amount decreased,while the average values of carbon storage and habitat quality increased.[Conclusion]The terrain in southwest alpine canyon region was complex.There was a relatively large area of forest land and grassland in the region,and the overall situation of carbon storage and habitat quality was relatively good.However,a large amount of snow-covered areas and unused land also led to a decrease in both water yield and soil conservation amount.
作者
李玲
王震
王克勤
李亦然
李选平
马艳波
杨锦
冯小纹
LI Ling;WANG Zhen;WANG Keqin;LI Yiran;LI Xuanping;MA Yanbo;YANG Jin;FENG Xiaowen(College of Soil and Water Conservation,Southwest Forestry University,Kunming 650224,Yunnan,China;Yongsheng County Soil and Water Conservation Committee,Yongsheng 674200,Yunnan,China;Yongsheng County Chenghai Power Pumping Station,Yongsheng 674202,Yunnan,China)
出处
《浙江农林大学学报》
北大核心
2025年第4期813-824,共12页
Journal of Zhejiang A&F University
基金
国家重点研发计划项目(2022YFF1302904)
云南省基础研究专项-青年项目(202401AU070122)。
