耦合InVEST-PLUS模型的榆林市生境质量时空演变及预测分析  

Spatio-temporal Evolution and Prediction Analysis of Habitat Quality in Yulin City Coupled with InVEST-PLUS Model

作　　者：冀泳帆 贾鲁净 杨联安[1,2,3] 李亚丽 董强华 JI Yongfan;JIA Lujing;YANG Lian’an;LI Yali;DONG Qianghua(Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity,Northwest University,Xi’an 710127;Institute of the Yellow River Research,Xi’an 710127;College of Urban and Enironmental Sciences,Northwest University,Xi’an 710127)

机构地区：[1]西北大学陕西省地表系统与环境承载力重点实验室,西安710127 [2]陕西省黄河研究院,西安710127 [3]西北大学城市与环境学院,西安710127

出　　处：《水土保持学报》2023年第1期123-132,共10页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(41601290);陕西省农业科技攻关项目(2011K02-11)。

摘　　要：生境质量是衡量一个地区生态环境优劣的重要参考指标,土地利用变化研究可为区域生境质量时空动态演变特征评估提供科学依据。基于1980年、2000年、2018年土地利用数据,通过InVEST模型、PLUS模型、地理信息图谱法分析并预测榆林市土地利用变化情况,以此探究陕西省榆林市生境质量时空演变特征。结果表明:(1)榆林市景观基质主要由草地和耕地构成,林地和未利用地次之,水域和建设用地占比相对较少,退耕还林政策的实施、治沙工程的开展,以及建设用地的开发是土地利用变化的主要驱动因素。(2)从区域整体分析,1980年、2000年、2018年、2030年生境质量平均值分别为0.5028,0.5209,0.5183,0.5259,生境值总体变化不大,呈现先增后降再增的波动变化趋势。从空间格局分析,榆林市生境质量分布具有一定的规律性,整体呈现东高西低的格局。生境退化平均值分别为0.0298,0.0289,0.0292,0.0283,具有生境退化的威胁。研究结果对榆林市自然环境的保护和生境质量的提高具有理论支持和政策意义。Habitat quality is an important reference index to measure the quality of a region’s ecological environment,and research on land use change can provide a scientific basis for evaluating the spatio-temporal dynamic evolution characteristics of regional habitat quality.Based on the land use data in 1980,2000 and 2018,this paper analyzes and predicts the change of land use in Yulin City through the InVEST model,PLUS model,and geographic information map method,so as to explore the spatio-temporal evolution characteristics of habitat quality in Yulin City,Shaanxi Province.The conclusions are as follows:(1)The landscape matrix in Yulin City is mainly composed of grassland and cultivated land,followed by forest land and unused land,while water and construction land account for a relatively small proportion.The implementation of the policy of returning farmland to forest,the development of desertification control projects,and the development of construction land are the main driving factors of land use change.(2)From the overall analysis of the region,the average habitat quality in 1980,2000,2018 and 2030 is 0.5028,0.5209,0.5183 and 0.5259,respectively.The overall habitat value does not change much,showing a fluctuating trend of first increase,then decrease and then increase.From the analysis of the spatial pattern,the distribution of habitat quality in Yulin City has a certain regularity,and the overall pattern is high in the east and low in the west.The average value of habitat degradation in Yulin City is 0.0298,0.0289,0.0292 and 0.0283,respectively,indicating the threat of habitat degradation.The research results have theoretical support and policy significance for the protection of the natural environment and the improvement of habitat quality in Yulin City.

关 键 词：生境质量 时空动态变化 InVEST模型 PLUS模型 地理信息图谱法 

分 类 号：Q149[生物学—生态学] X37[生物学—普通生物学]