罗霄山区近25年生境质量时空演变及预测  

Spatial-Temporal Evolution of Habitat Quality and Its Prediction in Luoxiao Mountain Area in the Past 25 Years

作　　者：刘艳[1,2,3] 牛香 王兵 LIU Yan;NIU Xiang;WANG Bing(Ecology and Nature Conservation Institute,Chinese Academy of Forestry,Beijing 100091,China;Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration,Beijing 100091,China;Dagangshan National Key Field Observation and Research Station for Forest Ecosystem,Fenyi,Jiangxi 336606,China)

机构地区：[1]中国林业科学研究院森林生态环境与自然保护研究所,北京100091 [2]国家林业和草原局森林生态环境重点实验室,北京100091 [3]江西大岗山森林生态系统国家野外科学观测研究站,江西分宜336606

出　　处：《林草资源研究》2023年第6期39-51,共13页Forest Resources Management

基　　金：国家重点研发计划“中国典型森林生态系统长期监测数据产品开发”(2021YFF0703905)。

摘　　要：分析生境质量的时空变化规律能够给生态脆弱区的生态保护和修复工作提供依据。基于1995年、2005年、2015年和2020年4期土地利用数据,采用土地利用类型动态度、InVEST模型、斑块生成土地利用模拟模型(PLUS)等方法,研究罗霄山区1995—2020年生境质量时空变化规律及预测2035年自然发展—耕地保护—生态保护情景的生境质量变化特征。结果表明:1)罗霄山区以林地为主导地类,1995—2020年间,耕地、林地、草地面积占比均减少,而建设用地面积增幅高达0.69%,且91%以上由耕地和林地转入。2)罗霄山区整体上生境质量较好,高级和较高级生境质量的面积占比达57%;1995—2020年,生境质量呈退化趋势,退化区域主要位于茶陵县、南康区和宜章县。3)与2020年相比,2035年自然发展、耕地保护情景下高等级生境质量面积占比均呈小幅度减小趋势;相反,生态保护情景下的高等级生境质量面积占比提升7.14%,生态保护情景是区域可持续发展的最优选择。控制具有高级生境质量的林地和耕地向低级生境质量的建设用地转化,对改善区域生境质量具有重要意义。Analyzing the temporal and spatial variation of habitat quality can provide a basis for ecological protection and restoration in ecologically fragile areas.In this study,the spatio-temporal variation of habitat quality in Luoxiao Mountain from 1995 to 2020 and the variation characteristics of habitat quality in the scenarios of natural development-arable land protection-ecological conservation in 2035 were studied based on land-use type dynamics,InVEST model and patch generation land use simulation(PLUS)model.The results show that 1)Luoxiao Mountain is dominated by forest land,and the proportion of arable land,forest land and grassland area decreased from 1995 to 2020,while the increase of construction land area was as high as 0.69%,and more than 91%was transferred from cultivated land and forest land.2)The overall habitat quality of Luoxiao Mountain is better,and the area of higher and higher habitat quality accounts for 57%;From 1995 to 2020,the habitat quality of Luoxiao Mountain showed a trend of degradation,and the degraded areas were mainly located in Chaling County,Nankang District and Yizhang County.3)Compared with 2020,the proportion of high-grade habitat quality area under the natural development and arable land protection scenarios in 2035 showed a slight decreasing trend,while the proportion of high-grade habitat quality area increased by 7.14%under the ecological protection scenario,so the ecological protection scenario was the best choice for regional sustainable development.It is of great significance to control the transformation of forest land and arable land with higher habitat quality to construction land with lower habitat quality.

关 键 词：罗霄山区 情景预测 生境质量 PLUS模型 InVEST模型 

分 类 号：S718.5[农业科学—林学]