Competition between Stipa grandis and Cleistogenes squarrosa

	Competition between Stipa grandis and Cleistogenes squarrosa
	Wang, J. H. ; Wang, S. P. ; Schnug, E. ; Haneklaus, S. ; Patton, B. ; Nyren, P.
刊名	JOURNAL OF ARID ENVIRONMENTS ; Wang JH, Wang SP, Schnug E, Haneklaus S, Patton B , Nyren P.Competition between Stipa grandis and Cleistogenes squarrosa.JOURNAL OF ARID ENVIRONMENTS,2008,72(2):63-72
	2008-02-01
英文摘要	Competitive strategy for resources between Cleistogenes squarrosa (Trin.) Keng which is a dominant species of grasslands degraded by moderate-heavy grazing, and Stipa grandis P. Smirnov, which is a dominant species of ungrazed communities, was studied using a replacement series method in a greenhouse. The knowledge would be helpful in managing grasslands and restoring the degraded C. squarrosa grassland. Although there was neither inter- nor intra-specific competition between the two species when no nutrients were added, intra-specific competition of C. squarrosa was observed and increased with increased nutrient availability and more sulfur (S) was allocated to the aboveground partition of the plant. Relative competitive ability of C. squarrosa was greater than that of S. grandis when nutrients were supplied regardless of S. There was no significant difference between shoot and root competition based on dry matter yields. However, root competition was significantly greater than that of shoot based on S uptake under all treatments. A significant interaction was not observed between shoot and root competition. Therefore, nutrients addition benefits the restoration of degraded grassland of C. squarrosa, which may not exclude S. grandis. Also productivity and forage quality of the community will be increased. (C) 2007 Elsevier Ltd. All rights reserved.; Competitive strategy for resources between Cleistogenes squarrosa (Trin.) Keng which is a dominant species of grasslands degraded by moderate-heavy grazing, and Stipa grandis P. Smirnov, which is a dominant species of ungrazed communities, was studied using a replacement series method in a greenhouse. The knowledge would be helpful in managing grasslands and restoring the degraded C. squarrosa grassland. Although there was neither inter- nor intra-specific competition between the two species when no nutrients were added, intra-specific competition of C. squarrosa was observed and increased with increased nutrient availability and more sulfur (S) was allocated to the aboveground partition of the plant. Relative competitive ability of C. squarrosa was greater than that of S. grandis when nutrients were supplied regardless of S. There was no significant difference between shoot and root competition based on dry matter yields. However, root competition was significantly greater than that of shoot based on S uptake under all treatments. A significant interaction was not observed between shoot and root competition. Therefore, nutrients addition benefits the restoration of degraded grassland of C. squarrosa, which may not exclude S. grandis. Also productivity and forage quality of the community will be increased. (C) 2007 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/1243]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Wang, J. H.,Wang, S. P.,Schnug, E.,et al. Competition between Stipa grandis and Cleistogenes squarrosa[J]. JOURNAL OF ARID ENVIRONMENTS, Wang JH, Wang SP, Schnug E, Haneklaus S, Patton B , Nyren P.Competition between Stipa grandis and Cleistogenes squarrosa.JOURNAL OF ARID ENVIRONMENTS,2008,72(2):63-72,2008.
APA	Wang, J. H.,Wang, S. P.,Schnug, E.,Haneklaus, S.,Patton, B.,&Nyren, P..(2008).Competition between Stipa grandis and Cleistogenes squarrosa.JOURNAL OF ARID ENVIRONMENTS.
MLA	Wang, J. H.,et al."Competition between Stipa grandis and Cleistogenes squarrosa".JOURNAL OF ARID ENVIRONMENTS (2008).