Leaf litter of a dominant cushion plant shifts nitrogen mineralization to immobilization at high but not low temperature in an alpine meadow
He, YT; Xu, XL; Kueffer, C; Zhang, XZ; Shi, PL
2014
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume383Issue:01-02Pages:415-426
AbstractWe evaluated the effects of temperature and addition of leaf litter of Androsace tapete MaximWe-a dominant cushion plant species of alpine meadows on the Tibetan Plateau-on carbon (C) and nitrogen (N) mineralization, microbial biomass C (MBC) and N (MBN). A laboratory incubation experiment with and without cushion plant litter addition was conducted for 112 days at three temperature regimes (-1, 5 and 11 A degrees C). C and net N mineralization were simultaneously measured during the incubation period. C and N mineralization were affected by interactions between litter addition and temperature. Litter addition increased C mineralization and MBN but shifted N mineralization to immobilization at higher temperature. The positive relationship between net N mineralization and MBC and MBN was shifted to a negative one through cushion plant litter addition. Cushion plant litter also changed the relationship between C mineralization and net N mineralization from insignificantly positive to significantly negative. These findings indicate that low temperature in winter could be important for alpine plants because low temperature can increase net N mineralization and supply plants with available N for their growth in the early growing season. During the growing season, climate warming-either directly through a temperature effect or indirectly through triggering increased cushion plant litter production-might lead to stronger competition for N between alpine plants and microorganisms.
SubtypeJournal
KeywordAlpine meadow Climate change Cushion plant Cmineralization Litter decomposition N mineralization Nutrient cycling Tibetan Plateau
Subject AreaAgriculture ; Plant Sciences
WOS Subject ExtendedAgronomy ; Plant Sciences ; Soil Science
WOS KeywordSOIL MICROBIAL BIOMASS ; ORGANIC-MATTER DECOMPOSITION ; ANDROSACE-TAPETE PRIMULACEAE ; SPATIAL GENETIC-STRUCTURE ; QINGHAI-TIBETAN PLATEAU ; ARCTIC SOILS ; POSITIVE ASSOCIATIONS ; COMMUNITY STRUCTURE ; INORGANIC NITROGEN ; CENTRAL CHILE
Indexed BySCI
Language英语
WOS IDWOS:000342415800030
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44506
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
He, YT,Xu, XL,Kueffer, C,et al. Leaf litter of a dominant cushion plant shifts nitrogen mineralization to immobilization at high but not low temperature in an alpine meadow[J]. PLANT AND SOIL,2014,383(01-02):415-426.
APA He, YT,Xu, XL,Kueffer, C,Zhang, XZ,&Shi, PL.(2014).Leaf litter of a dominant cushion plant shifts nitrogen mineralization to immobilization at high but not low temperature in an alpine meadow.PLANT AND SOIL,383(01-02),415-426.
MLA He, YT,et al."Leaf litter of a dominant cushion plant shifts nitrogen mineralization to immobilization at high but not low temperature in an alpine meadow".PLANT AND SOIL 383.01-02(2014):415-426.
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