摘要
通过调查吴旗县覆沙黄土区不同时段封禁造林情况，并对此地区植被群落的重要值、物种丰富度、生物量等指标进行分析研究。结果表明：实施封禁造林3～4a，一年生植物很快侵入，但整个群落无明显优势种；封禁造林5～6a，禾本科、豆科、菊科的一些物种逐渐占据优势，形成了地带性植被；封禁造林10年后，植被基本恢复到与环境相适应的稳定群落。
The indexes of importance value , species abundance and biomass about vegetation community in sand covered and loess region in Wuqi county in different time-interval are analyzed,through investigating the situation of the closed vegetational type. The results indicates that the area during closing and afforesting forests about 3 - 4 years, the annual plant intruded quickly ,but there were no obvious dominant socials in the vegetation community; the forests closed and afforested about 5-6 years, some species of the gramineous, leguminous and composite vegetation would inhabit the predominance as the characteristics of zonality plant; after the plants closed and afforested more than 10 years, the vegetation is basically coherent to the stable plant community.
出处
《水土保持研究》
CSCD
北大核心
2006年第3期80-82,共3页
Research of Soil and Water Conservation
关键词
退耕还林
封禁
植被恢复
吴旗县
生物量
returning farmland to forestry
closure
revegetation
Wuqi county
作者简介
罗国占（1980-），男，内蒙古呼伦贝尔人。硕士研究生，主要从事水土保持荒漠化研究；
责任作者。赵廷宁。
