基于LUCC和InVEST模型的长汀县生境质量研究  

Research on the Habitat Quality of Changting County Based on LUCC and InVEST Model

作　　者：赵智源 武国胜[1,2] 林惠花[1,2] ZHAO Zhiyuan;WU Guosheng;LIN Huihua(School of Geographical Sciences,Fujian Normal University,Fuzhou 350117,China;Institute of Geography,Fujian Normal University,Fuzhou 350117,China)

机构地区：[1]福建师范大学地理科学学院,福州350117 [2]福建师范大学地理研究所,福州350117

出　　处：《亚热带资源与环境学报》2022年第4期37-45,共9页Journal of Subtropical Resources and Environment

基　　金：福建省属公益类科研院所专项(2021R1002003)。

摘　　要：土地利用变化是全球变化中的重要内容,探讨南方红壤典型水土流失区土地利用变化引起的生境质量演变,能为南方水土流失区生态保护工作及区域生态安全格局构建提供科学依据和“长汀经验”。本研究基于2005、2010、2015、2020年4期土地利用数据,结合InVEST模型对长汀县生境质量进行综合评估,并对计算得出的生境质量指数和生境退化度进行统计分析。(1)2005—2020年,研究区土地利用主要变化类型为建设用地侵占耕地和草地,草地、未利用地和建设用地转为林地,以及林地内部的低覆盖类型向高覆盖类型转移;(2)15年来长汀县平均生境质量先增后减,空间上表现为西高东低,中部相对较差,整体生境质量处于优质等级但存在局部恶化的情况,生境变差区域主要分布在大同镇、策武乡和河田镇等人类活动密集的山间盆谷地区;(3)研究期间生境退化度持续增高,围绕城镇居民点表现为低-高-中-低的圈层递变规律。未来应规范居民点周边的人类开发建设活动,特别是中部地区的建设用地和园地扩张,构建生态保护带,降低生境退化威胁,实现生境质量持续稳定提升。Land-use change plays a crucial role in the global change.Discussion on the habitat quality evolution caused by the land-use change in the typical water and soil erosion area with red soil,will make a general reference,“the Changting experience”,to the ecological protection and the ecological safety pattern development in the other areas with the same soil conditions in South China.Based on the land-use data in 2005,2010,2015 and 2020,the habitat quality of Changting County was evaluated comprehensively by InVEST model.Then,the statistical analysis was conducted.The results show that,(1)during 2005—2020,the main change in land-use took place in the transformations from the cultivated land and grassland to the construction land,and from the construction land,grassland,and the unused land to the forest land.(2)Over the past 15 years,Changting County’s average habitat quality has increased at the first place,then declined,which was noted for its uneven distribution of habitat quality,the west region with high quality,the east region with low quality,and the middle area with the poor performance.As a result,the overall habitat quality was high while the regional deterioration still existed.The area with relatively inferior quality was mainly distributed in the intermountain basin and valley areas with highly dense human activities such as Datong Town,Cewu Town,Hetian Town,etc.(3)The habitat quality degradation keeps occurring during the whole study,which exhibited a gradual change pattern,a low-high-medium-low circle centered on residential areas.In the future,human development and construction activities around the residential areas should be controlled and supervised,especially the expansion of construction land and garden land in the central region.The purpose is to construct ecological protection zones,reduce the threat of habitat degradation,and achieve the continuous improvement of habitat quality.

关 键 词：LUCC 生境质量 InVEST模型 长汀县 

分 类 号：X826[环境科学与工程—环境工程]