摘要
通过对黄土丘陵沟壑区安塞纸坊沟沟沿线边缘植被特征的调查,共发现隶属26科的66个物种,其中豆科、禾本科和菊科物种分别占19.70%1、5.15%和13.64%;物种中出现最多的是多年生草本,其次依次是1年生草本、灌木、小灌木、乔木、藤本和小乔木,其中灌乔物种多为主要物种且多为当地优势灌木虎榛子和酸枣等,指示着研究区植被恢复的方向;调查植物种基本包含了陕北黄土高原森林草原带次生演替各个阶段的主要植物种,是研究区次生演替的一个缩影;从沟沿线边缘植被的分布看,灌木远多于草本,其中以灌木为主的沟沿线区段植被的宽度、盖度均比以草本为主的沟沿线区段大,沟沿线防蚀效益较好。
Based on the investigation, 66 species belonging to 26 families are found, among them, the most three families are Leguminoseae, Gramineae, and Compositae, which accounting for 19.70%, 15.15%, and 13.64% respectively; Most of them are perennial herb, then annual herb, shrubs, nanoshrub, tree, vine, and shrub tree, almost shrubs are important species in all samples and dominant shrubs in the research area, such as Ostryopsis davidiana and Ziziphus jujuba var. spinosa, which may be the dominant species in next succession; Almost all species in the recovering succession on forest steppe zone of Loess Plateau are found; Among all the margin between gully and inter-gully, more sections are covered by shrubs than by herbage; compare all sites, the shrubs sites are wider, cover higher and more useful in erosion control.
出处
《中国水土保持科学》
CSCD
2007年第4期39-43,61,共6页
Science of Soil and Water Conservation
基金
国家自然科学基金"黄土高原退耕地植被恢复对土壤侵蚀环境的响应与模拟"(40571094)
西北农林科技大学"青年学术骨干支持计划"项目"黄土高原土壤侵蚀对退耕地植被恢复的影响"(01140301)
教育部留学回国人员科研启动基金资助项目"黄土丘陵沟壑区退耕地自然恢复植被的抗蚀能力评价"
关键词
沟沿线
植物种
组成
分布
黄土丘陵沟壑区
words the margin between gully and inter-gully
species
composing
distributing
the hill and gullyregion of Loess Plateau
