Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau

NWIPB OpenIR

	Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau
	Hirota, Mitsuru ; Kawada, Kiyokazu ; Hu, Qiwu ; Kato, Tomomichi ; Tang, Yanhong ; Mo, Wenhong ; Cao, Guangmin ; Mariko, Shigeru
	2007-08-01
发表期刊	LIMNOLOGY ; Hirota Mitsuru,Kawada Kiyokazu,Hu Qiwu, Kato Tomomichi, Tang Yanhong, Mo Wenhong, Cao Guangmin, Mariko Shigeru.Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau. LIMNOLOGY,2007,8(2):161-170
摘要	To initially describe vegetation structure and spatial variation in plant biomass in a typical alpine wetland of the Qinghai-Tibetan Plateau, net primary productivity and vegetation in relationship to environmental factors were investigated. In 2002, the wetland remained flooded to an average water depth of 25 cm during the growing season, from July to mid-September. We mapped the floodline and vegetation distribution using GPS (global positioning system). Coverage of vegetation in the wetland was 100%, and the vegetation was zonally distributed along a water depth gradient, with three emergent plant zones (Hippuris vulgaris-dominated zone, Scirpus distigmaticus-dominated zone, and Carex allivescers-dominated zone) and one submerged plant zone (Potamogeton pectinatus-dominated zone). Both aboveground and belowground biomass varied temporally within and among the vegetation zones. Further, net primary productivity (NPP) as estimated by peak biomass also differed among the vegetation zones; aboveground NPP was highest in the Carex-dominated zone with shallowest water and lowest in the Potamogeton zone with deepest water. The area occupied by each zone was 73.5% for P. pectinatus, 2.6% for H. vulgaris, 20.5% for S. distigmaticus, and 3.4% for C. allivescers. Morphological features in relationship to gas-transport efficiency of the aerial part differed among the emergent plants. Of the three emergent plants, H. vulgaris, which dominated in the deeper water, showed greater morphological adaptability to deep water than the other two emergent plants.; To initially describe vegetation structure and spatial variation in plant biomass in a typical alpine wetland of the Qinghai-Tibetan Plateau, net primary productivity and vegetation in relationship to environmental factors were investigated. In 2002, the wetland remained flooded to an average water depth of 25 cm during the growing season, from July to mid-September. We mapped the floodline and vegetation distribution using GPS (global positioning system). Coverage of vegetation in the wetland was 100%, and the vegetation was zonally distributed along a water depth gradient, with three emergent plant zones (Hippuris vulgaris-dominated zone, Scirpus distigmaticus-dominated zone, and Carex allivescers-dominated zone) and one submerged plant zone (Potamogeton pectinatus-dominated zone). Both aboveground and belowground biomass varied temporally within and among the vegetation zones. Further, net primary productivity (NPP) as estimated by peak biomass also differed among the vegetation zones; aboveground NPP was highest in the Carex-dominated zone with shallowest water and lowest in the Potamogeton zone with deepest water. The area occupied by each zone was 73.5% for P. pectinatus, 2.6% for H. vulgaris, 20.5% for S. distigmaticus, and 3.4% for C. allivescers. Morphological features in relationship to gas-transport efficiency of the aerial part differed among the emergent plants. Of the three emergent plants, H. vulgaris, which dominated in the deeper water, showed greater morphological adaptability to deep water than the other two emergent plants.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/35481
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	Hirota, Mitsuru,Kawada, Kiyokazu,Hu, Qiwu,et al. Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau[J]. LIMNOLOGY, Hirota Mitsuru,Kawada Kiyokazu,Hu Qiwu, Kato Tomomichi, Tang Yanhong, Mo Wenhong, Cao Guangmin, Mariko Shigeru.Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau. LIMNOLOGY,2007,8(2):161-170,2007.
APA	Hirota, Mitsuru.,Kawada, Kiyokazu.,Hu, Qiwu.,Kato, Tomomichi.,Tang, Yanhong.,...&Mariko, Shigeru.(2007).Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau.LIMNOLOGY.
MLA	Hirota, Mitsuru,et al."Net primary productivity and spatial distribution of vegetation in an alpine wetland, Qinghai-Tibetan Plateau".LIMNOLOGY (2007).