酒泉风电基地对区域生态环境的影响  

Analysis of Jiuquan wind power base project impact on regional eco-environment

作　　者：胡雅杰[1] 闫业庆[1] 孙继成[1] 魏国孝[2,3] 

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000 [2]兰州大学西部环境教育部重点实验室,甘肃兰州730000 [3]兰州大学西部环境与气候变化研究院,甘肃兰州730000

出　　处：《甘肃农业大学学报》2013年第2期92-98,共7页Journal of Gansu Agricultural University

基　　金：国家自然科学基金创新群体项目(40721061)

摘　　要：利用1∶10×104土地利用数据库和遥感影像解译数据,通过Arcgis 9.2和Fragstats 3.3软件,运用生态环境质量指标法和景观生态学法对酒泉风电基地的生态环境现状和基地建设对区域生态环境的影响进行了分析.结果表明:酒泉风电基地规划实施前后生态环境质量指数由22.51减小为21.44,生态环境质量变差;未利用地是该区域的主导景观要素,建筑用地景观要素指数变化趋势与林地、草地、未利用地景观要素相反,在一定程度上反映了建筑用地与林地、草地、未利用地景观要素之间的转换关系;在景观级别上,景观斑块数、斑块密度、斑块周长、形状指数、分离度、优势度、蔓延度指数降低,斑块平均面积、香农多样性指数、香农均匀度指数、破碎度指数等均增加,表明酒泉风电基地建设使景观要素大斑块增多,小斑块减少,景观形状变得更为规则、简单,在地域分布上的分散程度降低,景观要素被分割的破碎程度增加,景观空间结构更复杂,增加了景观多样性和异质性;在景观要素上,形状指数、分维数减小,散布和并列指数增加,也表明研究区内景观要素出现规则化和简单化,稳定性增加.Based on 1∶10×104 lansuse database and imagery,and the software Arcgis 9.2 and Fragstats 3.3,the actuality and impact of eco-environment were studied by using the method of ecological quality index（EQI） and landscape ecology.It was concluded that in the study area,EQI changed to 21.44 from 22.51,ecological and environmental conditions were poor.Before and after the construction of wind power base,the deserted land was the dominant landuse type over the area,its change trend of landscape indexes was opposite to woodland,grassland and the unused land,it was also showed that there exited a significant interaction between the construction land and woodland,grassland,the unused land.On the landscape level,the value of NP,PD,P,LSI,SWD and CONTAG showed a decrease trend,the value of MPS,SHDI,SHEI and FI increased,this reflected that the large number of patches increased and the small patches decreased,the landscape shape became more regular and simple.As a whole,the landscape isolation decreased over the study area,the landscape elements were seriously divided,the landscape space structure was more complicated,and the landscape diversity and heterogeneity were increased.On the landscape type level,the value of LSI and PAFRAC was decreased,the value of LJI was increased,also showed that the landscape elements appeared regularization and simplification and the stability increased.

关 键 词：酒泉 风电基地 生态环境 环境质量指数 景观生态学 

分 类 号：P901[天文地球—自然地理学]