摘要
以黄土高原区露天煤矿复垦地为对象，于2005年8月对准格尔旗黑岱沟露天煤矿1992-2005年复垦的364hm^2排土场野生植物入侵的种类进行了调查与研究，分析了42个样地上不同野生植物侵入的多度、频度、侵入规律及对生态系统的影响．结果表明：1992-2005年的近15年中，共有115种野生植物自然侵入到排土场内，群落中以1年生植物占优势（〉50％），但多年生植物已比复垦初期（〈5％）增加了很多，在组成上约占总种数的40％-50％，多度高的植物已有多年生植物，且分布于植物群落中．影响复垦植被生长的主要侵入种是披碱草和拂子茅．复垦地野生杂草侵入，表现为①平台侵入种数〉边坡侵入种数，阴坡侵入种数〉阳坡侵入种数；②纯林侵入种数〉混交林侵入种数；③沙棘灌丛侵入种数〉油松侵入种数〉杨树林侵入种数；④黄土覆盖区侵入种数〉土石混排区侵入种数．
In order to study the ecosystem of reclaimed land, wild plants, which had intruded into 364 hm^2 of the reclaimed land at Heidaigou Opencast Coal Mine during 1992 to 2005, were investigated in 2005. The density, frequency and regularity of the species on 42 sample areas were analyzed. The results showed that in the restoration processes of vegetation, there were 115 species that intruded reclaimed land within almost 15 years from 1992 to 2005; in the populations, the annual plants were in the ascendant （ 〉 50% ）, but the perennial plants were more at present （40% - 50% ） than early stage （ 〈 5% ）; the factors, which affect growth and distribution of the wild plant, include gradient, orientation, characters of soil, allocation type and reclaim years, etc. The regularity of instruction on the total species was as follows： flat 〉 brae, south slope 〉 north slope; pure woodlot 〉 mixed woodlot; Hippophae-shrubbery 〉 Pinus tabulaeformis 〉 Populus simonii; areas of loess 〉 areas of loess and stone.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2006年第5期101-106,共6页
Research of Environmental Sciences
