Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| The effect of land management on plant community composition, species diversity, and productivity of alpine Kobersia steppe meadow | |
| Wang, WY; Wang, QJ; Wang, HC | |
| 2006-03-01 | |
| 发表期刊 | ECOLOGICAL RESEARCH
 |
| 卷号 | 21期号:2页码:181-187 |
| 文章类型 | Article |
| 摘要 | Grassland degradation is widespread and severe on the Tibet Plateau. To explore management approaches for sustainable development of degraded and restored ecosystems, we studied the effect of land degradation on species composition, species diversity, and vegetation productivity, and examined the relative influence of various rehabilitation practices (two seeding treatments and a non-seeded natural recovery treatment) on community structure and vegetation productivity in early secondary succession. The results showed: (1) All sedge and grass species of the natural steppe meadow had disappeared from the severely degraded land. The above-ground and root biomass of severely degraded land were only 38 and 14.7%, respectively, of those of the control. So, the original ecosystem has been dramatically altered by land degradation on alpine steppe meadow. (2) Seeding measures may promote above-ground biomass, particularly grass biomass, and ground cover. Except for the grasses seeded, however, other grass and sedge species did not occur after seeding treatments in the sixth year of seeding. Establishment of grasses during natural recovery treatment progressed slowly compared with during seeding treatments. Many annual forbs invaded and established during the 6 years of natural recovery. In addition, there was greater diversity after natural recovery treatment than after seeding treatments. (3) The above-ground biomass after seeding treatment and natural recovery treatment were 114 and 55%, respectively, of that of the control. No significant differences in root biomass occurred among the natural recovery and seeded treatments. Root biomass after rehabilitation treatment was 23-31% that of the control.; Grassland degradation is widespread and severe on the Tibet Plateau. To explore management approaches for sustainable development of degraded and restored ecosystems, we studied the effect of land degradation on species composition, species diversity, and vegetation productivity, and examined the relative influence of various rehabilitation practices (two seeding treatments and a non-seeded natural recovery treatment) on community structure and vegetation productivity in early secondary succession. The results showed: (1) All sedge and grass species of the natural steppe meadow had disappeared from the severely degraded land. The above-ground and root biomass of severely degraded land were only 38 and 14.7%, respectively, of those of the control. So, the original ecosystem has been dramatically altered by land degradation on alpine steppe meadow. (2) Seeding measures may promote above-ground biomass, particularly grass biomass, and ground cover. Except for the grasses seeded, however, other grass and sedge species did not occur after seeding treatments in the sixth year of seeding. Establishment of grasses during natural recovery treatment progressed slowly compared with during seeding treatments. Many annual forbs invaded and established during the 6 years of natural recovery. In addition, there was greater diversity after natural recovery treatment than after seeding treatments. (3) The above-ground biomass after seeding treatment and natural recovery treatment were 114 and 55%, respectively, of that of the control. No significant differences in root biomass occurred among the natural recovery and seeded treatments. Root biomass after rehabilitation treatment was 23-31% that of the control. |
| 关键词 | Alpine Steppe Meadow Land Degradation Rehabilitation Species Diversity Productivity |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科领域 | 生物科学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology |
| WOS记录号 | WOS:000235754600003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/1342 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810001, Peoples R China 2.Qinghai Normal Univ, Coll Life Sci, Xining 810008, Peoples R China 3.Lanzhou Univ, Coll Life Sci, Lanzhou 710000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, WY,Wang, QJ,Wang, HC. The effect of land management on plant community composition, species diversity, and productivity of alpine Kobersia steppe meadow[J]. ECOLOGICAL RESEARCH,2006,21(2):181-187. |
| APA | Wang, WY,Wang, QJ,&Wang, HC.(2006).The effect of land management on plant community composition, species diversity, and productivity of alpine Kobersia steppe meadow.ECOLOGICAL RESEARCH,21(2),181-187. |
| MLA | Wang, WY,et al."The effect of land management on plant community composition, species diversity, and productivity of alpine Kobersia steppe meadow".ECOLOGICAL RESEARCH 21.2(2006):181-187. |
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