Knowledge Management System of Northwest Institute of Plateau Biology, CAS
CHANGES IN PLANT DIVERSITY, BIOMASS AND SOIL C, IN ALPINE MEADOWS AT DIFFERENT DEGRADATION STAGES IN THE HEADWATER REGION OF THREE RIVERS, CHINA | |
Wang, C. T.1; Long, R. J.2; Wang, Q. L.1; Jing, Z. C.1; Shi, J. J.3 | |
2009-03-01 | |
发表期刊 | LAND DEGRADATION & DEVELOPMENT |
ISSN | 1085-3278 |
卷号 | 20期号:2页码:187-198 |
文章类型 | Article |
摘要 | Field surveys and experiment analyses were applied to detect the relationships between plant diversity, community biomass and soil resources at different degradation successional stages in the headwater region of three rivers in an alpine meadow. The chronosequence approach (space-for-time substitution) is a viable tool for obtaining integrated information within successional studies. The experimental plots were located in the Guoluo area, Which is part of the source region for the Yanglze and Yellow Rivers. The results showed not only that the quantities of roots and soil that are 'carriers' for cultivating soil roots were altered not only by disturbance (including overgrazing) and environmental factors but also that the proportion of the rhizome to soil at the 0-10 cm soil layer was enhanced by disturbance in heavy degradation. The plant community composition changed, and the number of plant species and the proportions of fine forage decreased. Moreover, soil fertility levels decreased remarkably, and the soil was degenerated. Plant community biomass levels at different degradation successional stages affected the soil microbial biomass carbon, soil organic carbon and also affected soil fertility conditions. Soil organic carbon and soil total nitrogen declined with grassland degeneration, and the distribution of soil organic carbon Was influenced greatly. The alpine species Kobresia pygmaea was at different degradation successional stages, and the Plant community biomass was significantly related to Soil nutrients. In the positive successional series, the composition of plant functional groups became complex gradually, plant species richness was gradually enhanced, and the change in the composition of each plant functional group also reflected the restoration degree plant community structure. Copyright (C) 2008 John Wiley & Sons, Ltd.; Field surveys and experiment analyses were applied to detect the relationships between plant diversity, community biomass and soil resources at different degradation successional stages in the headwater region of three rivers in an alpine meadow. The chronosequence approach (space-for-time substitution) is a viable tool for obtaining integrated information within successional studies. The experimental plots were located in the Guoluo area, Which is part of the source region for the Yanglze and Yellow Rivers. The results showed not only that the quantities of roots and soil that are 'carriers' for cultivating soil roots were altered not only by disturbance (including overgrazing) and environmental factors but also that the proportion of the rhizome to soil at the 0-10 cm soil layer was enhanced by disturbance in heavy degradation. The plant community composition changed, and the number of plant species and the proportions of fine forage decreased. Moreover, soil fertility levels decreased remarkably, and the soil was degenerated. Plant community biomass levels at different degradation successional stages affected the soil microbial biomass carbon, soil organic carbon and also affected soil fertility conditions. Soil organic carbon and soil total nitrogen declined with grassland degeneration, and the distribution of soil organic carbon Was influenced greatly. The alpine species Kobresia pygmaea was at different degradation successional stages, and the Plant community biomass was significantly related to Soil nutrients. In the positive successional series, the composition of plant functional groups became complex gradually, plant species richness was gradually enhanced, and the change in the composition of each plant functional group also reflected the restoration degree plant community structure. Copyright (C) 2008 John Wiley & Sons, Ltd. |
关键词 | Plain Diversity Community Biomass Soil Fertility Succession Alpine Meadow Headwaters Pr China |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
关键词[WOS] | TIBETAN PLATEAU ; SUCCESSION ; GRASSLAND |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
WOS类目 | Environmental Sciences ; Soil Science |
WOS记录号 | WOS:000264973200007 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/1894 |
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, Qinghai, Peoples R China 2.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Lanzhou 730070, Peoples R China 3.Qinghai Acad Anim & Vet Sci, Grassland Inst, Xining 810016, Qinghai, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, C. T.,Long, R. J.,Wang, Q. L.,et al. CHANGES IN PLANT DIVERSITY, BIOMASS AND SOIL C, IN ALPINE MEADOWS AT DIFFERENT DEGRADATION STAGES IN THE HEADWATER REGION OF THREE RIVERS, CHINA[J]. LAND DEGRADATION & DEVELOPMENT,2009,20(2):187-198. |
APA | Wang, C. T.,Long, R. J.,Wang, Q. L.,Jing, Z. C.,&Shi, J. J..(2009).CHANGES IN PLANT DIVERSITY, BIOMASS AND SOIL C, IN ALPINE MEADOWS AT DIFFERENT DEGRADATION STAGES IN THE HEADWATER REGION OF THREE RIVERS, CHINA.LAND DEGRADATION & DEVELOPMENT,20(2),187-198. |
MLA | Wang, C. T.,et al."CHANGES IN PLANT DIVERSITY, BIOMASS AND SOIL C, IN ALPINE MEADOWS AT DIFFERENT DEGRADATION STAGES IN THE HEADWATER REGION OF THREE RIVERS, CHINA".LAND DEGRADATION & DEVELOPMENT 20.2(2009):187-198. |
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