Contrasting effects of nitrogen and phosphorus addition on soil respiration in an alpine grassland on the Qinghai-Tibetan Plateau

doi:10.1038/srep34786

NWIPB OpenIR

	Contrasting effects of nitrogen and phosphorus addition on soil respiration in an alpine grassland on the Qinghai-Tibetan Plateau
	Ren, Fei 1,2; Yang, Xiaoxia 1,3,4; Zhou, Huakun 1; Zhu, Wenyan 1; Zhang, Zhenhua 1; Chen, Litong 1; Cao, Guangmin 1; He, Jin-Sheng 1,5,6
	2016-10-10
发表期刊	SCIENTIFIC REPORTS
卷号	6
文章类型	Article
摘要	High soil organic carbon content, extensive root biomass, and low nutrient availability make alpine grasslands an important ecosystem for assessing the influence of nutrient enrichment on soil respiration (SR). We conducted a four-year (2009-2012) field experiment in an alpine grassland on the Qinghai-Tibetan Plateau to examine the individual and combined effects of nitrogen (N, 100 kg ha(-1)year(-1)) and phosphorus (P, 50 kg ha(-1)year(-1)) addition on SR. We found that both N and P addition did not affect the overall growing-season SR but effects varied by year: with N addition SR increased in the first year but decreased during the last two years. However, while P addition did not affect SR during the first two years, SR increased during the last two years. No interactive effects of N and P addition were observed, and both N addition and P addition reduced heterotrophic respiration during the last year of the experiment. N and P addition affected SR via different processes: N mainly affected heterotrophic respiration, whereas P largely influenced autotrophic respiration. Our results highlight the divergent effects of N and P addition on SR and address the important potential of P enrichment for regulating SR and the carbon balance in alpine grasslands.
WOS标题词	Science & Technology
DOI	10.1038/srep34786
关键词[WOS]	MICROBIAL BIOMASS ; TEMPERATE STEPPE ; SOUTHERN CHINA ; INNER-MONGOLIA ; ELEVATED CO2 ; FOREST SOIL ; MEADOW SOIL ; CARBON ; RESPONSES ; ECOSYSTEM
收录类别	SCI
语种	英语
项目资助者	National Basic Research Program of China(2014CB954004 ; National Key Technology Research and Development Program of the Ministry of Science and Technology of China(2014BAC05B03) ; Natural Science Foundation of China(31570394 ; 2014CB954003) ; 31472135)
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000385140300001
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6399
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Qinghai Univ, State Key Lab Plateau Ecol & Agr, 251 Ningda Rd, Xining 810016, Peoples R China 4.Qinghai Acad Anim & Vet Sci, 1 Weier Rd, Xining 810016, Peoples R China 5.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, 5 Yiheyuan Rd, Beijing 100871, Peoples R China 6.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Ren, Fei,Yang, Xiaoxia,Zhou, Huakun,et al. Contrasting effects of nitrogen and phosphorus addition on soil respiration in an alpine grassland on the Qinghai-Tibetan Plateau[J]. SCIENTIFIC REPORTS,2016,6.
APA	Ren, Fei.,Yang, Xiaoxia.,Zhou, Huakun.,Zhu, Wenyan.,Zhang, Zhenhua.,...&He, Jin-Sheng.(2016).Contrasting effects of nitrogen and phosphorus addition on soil respiration in an alpine grassland on the Qinghai-Tibetan Plateau.SCIENTIFIC REPORTS,6.
MLA	Ren, Fei,et al."Contrasting effects of nitrogen and phosphorus addition on soil respiration in an alpine grassland on the Qinghai-Tibetan Plateau".SCIENTIFIC REPORTS 6(2016).