EFFECTS OF SOIL RESOURCES ON SPECIES COMPOSITION, PLANT DIVERSITY, AND PLANT BIOMASS IN AN ALPINE MEADOW, QINGHAI-TIBETAN PLATEAU

NWIPB OpenIR

	EFFECTS OF SOIL RESOURCES ON SPECIES COMPOSITION, PLANT DIVERSITY, AND PLANT BIOMASS IN AN ALPINE MEADOW, QINGHAI-TIBETAN PLATEAU
	Wang, Changting ; Long, Ruijun ; Wang, Qilan ; Jing, Zengchun ; Du, Yangong ; Cao, Guangmin
	2008
发表期刊	ISRAEL JOURNAL OF ECOLOGY & EVOLUTION
摘要	We investigated the effects of soil resources on species composition, plant diversity, and plant biomass in four alpine Kobresia meadow communities. Species diversity was lower in the Kobresia tibetica swamp meadow community than in the other three communities, but this community was characterized by the highest aboveground and belowground biomass and soil nutrients. Aboveground biomass was positively correlated with soil organic matter and soil total nitrogen ill all four alpine meadow communities. The proportion of light fraction organic carbon (LFOC) was positively correlated with soil total organic carbon in all types of grassland. In alpine meadows. belowground biomass mostly occurred at 0-10 cm soil, its did soil nutrients. Community differences in plant species composition were reflected ill biomass distribution. The highest total biomass (13.759 +/- 497 g/m(2)) including above- and belowground biomass appeared in the sedge-dominated Kobresia tibetica swamp meadow community. Intermediate biomass (3,235 +/- 142 g/m(2,) 2.645 +/- 16 g/m(2)) was found in the Kobresia pygmaea swamp meadow and Potentilla fruticosa shrubs meadow community, dominated by forbs, sedges, and woody plants. The lowest biomass (2,433 +/- 162 g/m(2)) was observed in the Kobresia humilis meadow, mainly dominated by forbs and grasses. The results indicated that fertility of the vegetation caused a decrease in plant species, increase in plant biomass. and also changes in species composition. Species traits (such as ability to respond to higher nutrient levels) its well its competitive interaction may determine ecosystem function (e.g. productivity). Plants with higher competitive ability would then have access In a greater proportion of available resources, leading to increased total resource uptake by roots. lower nutrient losses from the ecosystems. and increased aboveground and belowground biomass. The distribution of aboveground and below-round biomass is largely influenced by the plant species and growth forms within spatial gradients in soil moisture and edaphic conditions.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/43410
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Wang, Changting,Long, Ruijun,Wang, Qilan,et al. EFFECTS OF SOIL RESOURCES ON SPECIES COMPOSITION, PLANT DIVERSITY, AND PLANT BIOMASS IN AN ALPINE MEADOW, QINGHAI-TIBETAN PLATEAU[J]. ISRAEL JOURNAL OF ECOLOGY & EVOLUTION,2008.
APA	Wang, Changting,Long, Ruijun,Wang, Qilan,Jing, Zengchun,Du, Yangong,&Cao, Guangmin.(2008).EFFECTS OF SOIL RESOURCES ON SPECIES COMPOSITION, PLANT DIVERSITY, AND PLANT BIOMASS IN AN ALPINE MEADOW, QINGHAI-TIBETAN PLATEAU.ISRAEL JOURNAL OF ECOLOGY & EVOLUTION.
MLA	Wang, Changting,et al."EFFECTS OF SOIL RESOURCES ON SPECIES COMPOSITION, PLANT DIVERSITY, AND PLANT BIOMASS IN AN ALPINE MEADOW, QINGHAI-TIBETAN PLATEAU".ISRAEL JOURNAL OF ECOLOGY & EVOLUTION (2008).