摘要
从物种多样性、景观生态学、生态效益等方面选取了15项评价指标,结合实例定量化分析了建设项目占用林地的主要生态学影响。结果表明:研究区林地面积减少23.4%直接导致生物量、森林覆盖率以及生态系统服务功能价值分别下降28.9%、27.8%、22.0%;平均斑块面积、总景观要素密度、景观多样性指数、均匀度指数分别上升10.3%、13.3%、4.9%、0.3%;景观格局、保留的群落及其结构没有发生较明显的变化。在量化评价的基础上提出了建设项目在规划使用林地以及运行过程中的对策与建议,为合理使用林地提供科学依据。
The main ecological effects of the forest land occupied by construction projects are quantitatively analyzed through a real life project,15 indexes were selected from 3 main aspects,i.e.,species diversity,landscape ecology and ecological benefit.The results showed that 23.4%decrease of forestland area in the study area directly results in declines in biomass,forest coverage and ecological service value with respect to 28.9%,27.8%and 22.0%,respectively,and increases in mean patch area,total landscape element density,landscape diversity index and evenness index with respect to 10.3%,13.3%,4.9%and0.3%,respectively.However,landscape pattern,preserved communities and their structures did not change significantly.On the basis of quantitative evaluation,countermeasures and suggestions in the planning and operation process of projects using forestland are proposed,which provides scientific basis for rational use of forest land.
作者
李晓昕
魏荣锋
朱国军
李绍生
LI Xiao-xin;WEI Rong-feng;ZHU Guo-jun;LI Shao-sheng(Department of Environmental Engineering,ZhongYun International Engineering Co.,Lid,Zhengzhou 450000,China;Zhengzhou Ecology&Erwirorment Monitoring Center,Zhengzhou 450000,China)
出处
《四川环境》
2022年第4期168-175,共8页
Sichuan Environment
关键词
占用林地
量化分析
生态学评价
Forestland occupied
quantitative evaluation
ecological assessment
