等高反坡阶对松华坝水源区弃荒坡地植被恢复的初期影响  

Initial Influence on Vegetation Restoration of Sloping Wasteland under the Reverse-Slope Level Terrace in the Water Resource Area of Songhua Dam

作　　者：华锦欣 王克勤[1] 张香群 朱晓婷[1] 翟子宁 

机构地区：[1]西南林业大学环境科学与工程学院,云南昆明650224

出　　处：《西南林业大学学报（自然科学）》2016年第3期116-120,共5页Journal of Southwest Forestry University：Natural Sciences

基　　金：国家自然科学基金(30660037)项目资助;云南省高校优势特色重点学科(生态学)建设项目资助

摘　　要：等高反坡阶是一项能对坡面径流和泥沙产量起到调控作用的水保措施,为了解昆明松华坝水源区弃荒坡地次生林在等高反坡阶作用下,植被恢复的动态与植物物种的多样性,在试验林地进行等高反坡阶对植被恢复的影响研究。结果表明:坡地弃荒地次生林地植物共有31种,分属15科22属,其中灌木层植物7科9属10种,草本层植物10科18属21种;反坡阶处理样地观测到32种植物,分属15科22属,其中禾本科、菊科和茜草科植物达14种,占植物种总数量的43.8%;草本层在等高反坡阶的影响下,一定程度上增加了草本种的数量,Simpson指数、Shannon-Wiener多样性指数以及Pielou均匀度指数和Simpson指数均大于对照样地;在等高反坡阶的影响下,土壤水分和养分的分布不均匀性趋势增大,植物在趋利应激性的作用下,从分布较为均匀的状态逐渐形成镶嵌型空间格局。Reverse-slope level terrace plays a role in regulating slope flow and sediment yield. To understand the dynamic condition of vegetation recovery and vegetation diversity in secondary forest of sloping wasteland under the effect of reverse-slope level terrace in Kunming Songhua Dam Reservoir, the influence of reverse-slope level terrace on vegetation restoration was studied in the experiment forest land. The result showed that there were 31 kinds of plants in the secondary forest of sloping wasteland, which can be divided into 15 families and 22 genera. More specifically, there are 7 families, 9 genera and 10 species of plants in shrub layer; and 10 families, 18 genera and 21 species of plants in herb layer. 32 kinds of plants were observed in the sampling plot of reverse-slope level ter- race, which can be divided into 15 families and 22 genera. More specifically, the number of grass family, composite family and madder family reached 14 species, accounting for 43.8% of the species amount. To some extent, herb lay- er has increased the amount of species under the influence of reverse-slope level terrace, Simpson index, ShannonWiener diversity index, Pielou evenness index, and Simpson index were all higher than the sample index. Affected by the reverse-slope level terrace, the trend of uneven distribution of soil moisture and nutrient increased, plants under the tendency of practice to benefit, transformed gradually from even distribution to mosaic spatial pattern.

关 键 词：等高反坡阶 群落 植被恢复 红壤 水源区 松华坝 

分 类 号：S731.6[农业科学—林学]