气候变化领域集成服务门户(CCPortal): Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau

CCPortal

DOI	10.1007/s11258-009-9714-0
	Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau
	Xu, Guangping; Hu, Yigang; Wang, Shiping; Zhang, Zhenhua; Chang, Xiaofeng; Duan, Jichuang; Luo, Caiyun; Chao, Zengguo; Su, Ailing; Lin, Qiaoyan; Li, Yingnian; Du, Mingyuan
通讯作者	Wang, SP (通讯作者)
发表日期	2010
ISSN	1385-0237
EISSN	1573-5052
起始页码	257
结束页码	268
卷号	209 期号:2
英文摘要	Knowledge of the response of litter mass loss to climate warming and litter quality in alpine ecosystems is still sparse. Here, we conducted a 507-day litter decomposition experiment along an elevation gradient from 3200 to 3800 m using different litter types to determine the influences of litter quality and climate change on the elemental mass losses and on the temperature sensitivity of litter mass losses (annual percentage decomposition (%) per 1A degrees C temperature difference). Mass losses of C, nitrogen (N), phosphorus (P), potassium (K), sodium (Na), calcium (Ca), and Magnesium (Mg) decreased with an increase in elevation. In general, N and Na concentrations in litter and ratios of C:N and lignin:N were the best predictors of C mass losses. A higher N concentration and C:N ratio in litter caused greater C mass losses, but higher lignin:N ratio in litter resulted in lower C mass losses. Litter decomposition occurred in a two-stage process. Carbon mass loss in litter was mainly limited by soil temperature in the first growing season of the decomposition period, whereas N concentration and ratios of C:P and N:P limited carbon mass loss in the remaining litter during the second growing season of the decomposition period. Soil moisture appeared not to affect litter mass loss and the temperature sensitivity of litter mass loss of grass litter was greater than that of shrub litter in the alpine region.
关键词	ORGANIC-MATTER DECOMPOSITION TEMPERATURE-DEPENDENCE LIGNIN CONTROL NITROGEN FORESTS SENSITIVITY RATES
英文关键词	Litter quality; Mass loss; Soil temperature; Soil moisture; Elevation gradient; Alpine meadow
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS记录号	WOS:000279479500007
来源期刊	PLANT ECOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257758
推荐引用方式 GB/T 7714	Xu, Guangping,Hu, Yigang,Wang, Shiping,et al. Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau[J]. 中国科学院青藏高原研究所,2010,209(2).
APA	Xu, Guangping.,Hu, Yigang.,Wang, Shiping.,Zhang, Zhenhua.,Chang, Xiaofeng.,...&Du, Mingyuan.(2010).Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau.PLANT ECOLOGY,209(2).
MLA	Xu, Guangping,et al."Effects of litter quality and climate change along an elevation gradient on litter mass loss in an alpine meadow ecosystem on the Tibetan plateau".PLANT ECOLOGY 209.2(2010).