摘要
生境质量是衡量生态系统服务功能的关键指标。为全面揭示生境质量的变化机制,从“格局-过程-质量”的系统视角出发,综合考虑土地利用、景观格局及生态过程之间的相互作用。以西安市为研究对象,基于1990—2023年土地覆被数据,采用InVEST模型分析生境质量的时空演变规律,结果表明:(1)1990—2023年,西安市耕地和林地类型覆盖面积较大,建设用地面积显著增加,主要来源于耕地(984.46 km^(2))和水体(13.97 km^(2))的转化;(2)西安市的景观破碎化程度逐渐降低,斑块数量减少且边界复杂度下降,景观斑块形状趋向规则化,主要归因于大规模的土地开发;(3)生境质量较高区域主要分布在西安市的南部和东部,较低区域主要分布在西安市的北部,西安市的生境质量变化反映了城市化与生态保护之间的复杂关系。
Habitat quality is one of the key indicators to measure ecosystem service function.From the systematic perspective of"pattern-process-quality",this paper comprehensively considers the interaction among land use,landscape pattern and ecological process,so as to reveal the change mechanism of habitat quality more comprehensively.This paper takes Xi an City as the study area and uses land cover data from 1990 to 2023 as the data source.The temporal and spatial evolution of habitat quality was analyzed using InVEST model.The results show that:(1)From 1990 to 2023,cultivated land and forest land were widely distributed in Xi an City,while the area of construction land increased significantly,primarily due to the conversion of cropland(984.46 km^(2))and water(13.97 km^(2)).(2)Additionally,the degree of landscape fragmentation in Xi an City gradually decreased,with a reduction in the number of patches and a decline in boundary complexity,indicating that landscape patches tended to become more regular,largely attributed to large-scale land development.(3)Regions with higher habitat quality were mainly distributed in the southern and eastern parts of Xi an City,while lower-quality areas were concentrated in the northern part.The changes in habitat quality in this region reflect the complex relationship between urbanization and ecological conservation.
作者
刘扬
王君
王哲
刘圣沆
乔子真
LIU Yang;WANG Jun;WANG Zhe;LIU Sheng-hang;QIAO Zi-zhen(Xi′an Institute of Prospecting&Mapping,Xi′an 710054,China;Henan University of Urban Construction,Pingdingshan 467036,China)
出处
《河南城建学院学报》
2025年第4期108-116,共9页
Journal of Henan University of Urban Construction
