Effect of plateau zokors on vegetation characteristics and productivity of alpine meadow

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	Effect of plateau zokors on vegetation characteristics and productivity of alpine meadow
	Zhang Yanming; Liu Jike
	2002
发表期刊	兽类学报
卷号	22 期号:3 页码:201-210
摘要	This research was conducted on alpine meadow site at Menyuan county, Qinghai Province, People's Republic of China to determine the effects of native, subterranean rodent of Qinghai-Tibet grasslands, the plateau zokors (Myospalax baileyi), on seasonal above-and below-ground plant biomass, plant species diversity and productivity. Both total peaks of above-and below-ground biomass were the greatest (413.600 g/m~2 and 2297.502 g/m~2) in the patch no any plateau zokors colonized by plateau zokors over 10 years in August and October, respectively. Both above-and below-ground biomass were significantly increased in the patches where plateau zokors were removed or the burrow systems were abandoned for five years compared to the patches plateau zokors colonized over 10 years. However, both above-and below-ground biomass in abandoned patches were significantly lower than that in uncolonized patches. Monocotyledonous biomass was reduced greatly, but the non-palatable dicots were significantly increased in colonized patches. The palatable biomass of monocots and dicots were increased in abandoned patches. Total plant species diversity was the greatest in uncolonized patchesand least in abandoned patch. The total net primary production in colonized patches was reduced by 68.98% compared with uncolonized patches. Although the patches were without any plateau zokors disturbance for fives years, the total net primary production just reached 58.69% of the uncolonized patches. The above-ground net primary production in abandoned patches increased 28.74% and the below-ground increased 54.91% compared with the colonized patches. We suggest that plateau zokor-induced changes in plant above- and below-ground biomass and species diversity may lead to further alterations of nutrient cycling and trophic dynamics in this alpine meadow ecosystem.
关键词	Plateau Zokor (Myospalax Baileyi) Plant Biomass Plant Productivity Alpine Meadow
学科领域	动物学
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:1141602
引用统计
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/798
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	Zhang Yanming,Liu Jike. Effect of plateau zokors on vegetation characteristics and productivity of alpine meadow[J]. 兽类学报,2002,22(3):201-210.
APA	Zhang Yanming,&Liu Jike.(2002).Effect of plateau zokors on vegetation characteristics and productivity of alpine meadow.兽类学报,22(3),201-210.
MLA	Zhang Yanming,et al."Effect of plateau zokors on vegetation characteristics and productivity of alpine meadow".兽类学报 22.3(2002):201-210.

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