摘要
对典型喀斯特地区开展生境质量评价是了解区域资源利用现状、实施国土空间生态修复的重要手段。以生态脆弱区石林县为例,基于2000—2020年土地覆被数据,借助土地利用模拟(PLUS)模型及InVEST生境质量模型,揭示云南2000—2030年石林县的景观分布格局及其变化影响下生境质量的演变特征,评估研究区2030年在多情景下的生境质量。结果表明:(1)2000—2020年,石林县的土地利用类型以耕地、林地、草地为主,其中人造地表持续扩张,耕地面积不断下降;(2)2000、2010、2020年石林县的平均生境质量分别为0.472、0.475、0.460,总体上呈下降趋势,其中较差等级生境约占研究区面积50%,良好等级和优等级生境面积不足25%,差等级生境面积有所增长;(3)2030年石林县生态保护情景下的生境退化度明显低于其他2种情景,其中圭山镇的生境质量最高,鹿阜街道最低。石林县当前面临经济发展与生态保护的双重矛盾,景观格局、生境质量的空间分布与人类活动密切相关,潜在石漠化分布区的风险可能因不合理的人类活动而加剧,未来应根据研究区的环境特征合理开展城镇规划、防范潜在风险区的生境恶化;基于生态保护情景下石林县的国土资源配置较优,生境质量变化较为稳定,更符合石林县未来的发展路径。
Habitat quality assessment in typical karst areas is an important means to understand the status of regional resource utilization and implement territorial ecological restoration. Taking Shilin County, an ecologically fragile area, as an example, based on the land cover data from 2000 to 2020, with the help of Land Use Simulation(PLUS) model and InVEST habitat quality model, the landscape distribution pattern of Shilin County, Yunnan Province from 2000 to 2030 and its impact on changes were revealed. Assessing the quality of the ecological environment in the study area in 2030 under multiple scenarios, the results show that:(1) From 2000 to 2020, the land use types in Shilin County were mainly cultivated land, forest land and grassland, among which the artificial surface continued to expand and the cultivated land area continued to decline;(2) In 2000, 2010 and 2020, the average habitat quality in Shilin County was 0.472, 0.475 and 0.460, respectively. The area of poor grade habitat accounted for about 50% of the study area, and the area of good grade and excellent grade habitat was less than 25%. The area of poor grade habitat increased;(3) The habitat degradation degree under the ecological protection scenario of Shilin County in 2030 is significantly lower than that of the other two scenarios, among which Guishan Town has the highest habitat quality and Lufu Street the lowest. Shilin County is currently facing the dual contradiction between economic development and ecological protection. The spatial distribution of landscape pattern and habitat quality is closely related to human activities. The risk of potential rocky desertification distribution areas may be aggravated by unreasonable human activities. In the future, urban planning should be carried out reasonably according to the environmental characteristics of the study area to prevent habitat deterioration in potential risk areas. Based on the ecological protection scenario, Shilin County has better allocation of land resources and stable changes in habi
作者
陈艳
吴睿
马月伟
冯小鹤
潘健峰
陈玉美
CHEN Yan;WU Rui;MA Yue-wei;FENG Xiao-he;PAN Jian-feng;CHEN Yu-mei(School of Geography and Ecotourism,South-west Forestry University,Kunming 650224,China;Faculty of Geography,Yunnan Normal University,Kunming 650500,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2022年第12期1593-1603,共11页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(41201587)
云南省教育厅科学研究基金(2022Y646)
西南林业大学科技创新基金(KZ21004)。
关键词
喀斯特
生态脆弱区
生境质量
多情景模拟
石林县
karst
ecologically fragile area
habitat quality
multi-scenario simulation
Shilin County
