摘要
基于地理信息系统软件ArcGIS,数字化肖坑1∶25 000地形图,生成研究区高程图、坡度图和坡向图,并同植被图叠加,分析各景观要素在空间的分布特征与景观结构特征。结果表明,由常绿与落叶混交的阔叶林、杉木纯林、毛竹纯林和茶园等7种森林景观的面积总和占全区总面积的89.12%,是景观的基质。肖坑位于皖南中亚热带向北亚热带过渡地带,森林景观的空间分布受到海拔、坡度、坡向一定程度的影响,但并不明显。各种森林景观要素的垂直分布都与安徽的天然分布相一致;茶园景观均匀分布在海拔900 m以下。坡度间接影响到森林在不同坡度的分布,阔叶林景观主要分布在5-45°,而杉木纯林、毛竹纯林和茶园等景观则主要分布在0-35°。由于研究区海拔不高,各种森林景观要素受坡向影响并不明显。肖坑小流域的生态环境已得到很好的改善,但为了区域社会经济的可持续发展,应尽量减少各种对生态环境不利的干扰,加强区域生态景观建设和生态安全控制。
Based on the vegetation map and the relief map,using ArcGIS and Fragstats,the spatial pattern of forest landscape of Xiaokeng in Laoshan Natural Conservation Area in Anhui Province was analyzed.The results showed that 7 kinds forest landscape,including young or middle age evergreen and deciduous broad-leaved mixed forest,Cunninghamia lanceolata forest plantation,Phyllostachys edulis forest and Camellia sinensis plantation are the matrix,which the areas account for 89.12% of the totals in the research area.The spatial distribution of Xiao-keng forest landscape is impacted by altitude, slope, aspect in a certain extent, but it is not obvious. The vertical distribution of each kind of forest type is consistent with its natural distribution in Anhui Province. Owing to the full of Selenium element in soil,the Camellia sinensis plantation can be seen everywhere below altitude of 900 m. Influenced by slope indirectly, the broad-leaved forest is mainly distributed in 5 -45°, and Cunninghamia lanceolata forest plantation, Phyllostachys edulis forest and Camellia sinensis plantations were mainly in 0 -35°. Although the ecological environment of Xiaokeng small basin has improved obviously, but each kind of disturbance which was disadvantageous to the ecological environment should be reduced as far as possible, and the region ecological landscape construction and security control should be strengthened for the region sustainable development.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2009年第4期612-617,共6页
Journal of Anhui Agricultural University
基金
国家"十一五"科技攻关项目(2006BAD03A0604)资助
关键词
空间分布
森林景观
肖坑小流域
spatial distribution
forest landscape
Xiaokeng small basin
