Effects of reduced precipitation on litter decomposition in an evergreen broad-leaved forest in western China

被引:25
作者
Zhou, Shixing [1 ,2 ]
Huang, Congde [1 ]
Xiang, Yuanbin [1 ]
Tie, Liehua [1 ]
Han, Bohan [1 ]
Scheu, Stefan [2 ,3 ]
机构
[1] Sichuan Agr Univ, Coll Forestry, Huimin Rd 211, Chengdu 611130, Sichuan, Peoples R China
[2] Univ Gottingen, JF Blumenbach Inst Zool & Anthropol, D-37073 Gottingen, Germany
[3] Univ Gottingen, Ctr Biodivers & Sustainable Land Use, D-37073 Gottingen, Germany
关键词
Litter mass loss; Climate change; Throughfall reduction; Drought; k value; Litter quality; SIMULATED NITROGEN DEPOSITION; MASS-LOSS RATES; CLIMATE-CHANGE; LEAF-LITTER; FOLIAR LITTER; PHOSPHORUS DYNAMICS; TREE MORTALITY; STOICHIOMETRIC CONTROLS; THROUGHFALL REDUCTION; EXPERIMENTAL DROUGHT;
D O I
10.1016/j.foreco.2018.08.022
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Litter decomposition is a fundamental process of biogeochemical cycles and plays a critical role in regulating carbon (C) and nutrient mineralization in terrestrial ecosystems. Examining responses of litter decomposition to altered precipitation is crucial to understand terrestrial C dynamics and its feedback to climate change. To understand the effects of reduced precipitation on litter decomposition, a two-year throughfall reduction experiment was carried out in a natural evergreen broad-leaved forest in western China. Five throughfall reduction levels were investigated: control without throughfall reduction (Ctr), 5% (W1), 10% (W2), 20% (W3) and 50% throughfall reduction (W4). Throughfall reduction significantly reduced soil moisture, which was most pronounced in W3 and W4 treatments, and this was associated by significantly reduced cumulative litter mass loss and lower decomposition constants. Also, throughfall reduction significantly altered litter C, N and P dynamics. In particular in W2, W3 and W4 treatments the release of C and N was significantly reduced, whereas in W2 and W3 the immobilization of P was increased. Overall, the results suggest that future decrease in precipitation will suppress litter decomposition, whereas microbial P limitation in litter may be aggravated in broad-leaved forest ecosystems.
引用
收藏
页码:219 / 227
页数:9
相关论文
共 77 条
[2]   A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests [J].
Allen, Craig D. ;
Macalady, Alison K. ;
Chenchouni, Haroun ;
Bachelet, Dominique ;
McDowell, Nate ;
Vennetier, Michel ;
Kitzberger, Thomas ;
Rigling, Andreas ;
Breshears, David D. ;
Hogg, E. H. ;
Gonzalez, Patrick ;
Fensham, Rod ;
Zhang, Zhen ;
Castro, Jorge ;
Demidova, Natalia ;
Lim, Jong-Hwan ;
Allard, Gillian ;
Running, Steven W. ;
Semerci, Akkin ;
Cobb, Neil .
FOREST ECOLOGY AND MANAGEMENT, 2010, 259 (04) :660-684
[3]  
Anderson J.M., 1994, Soil Science, V157, P265, DOI [10.2307/2261129, DOI 10.2307/2261129]
[4]  
[Anonymous], 1989, NUTR ELEMENTS
[5]   Spatial variability in decomposition rates in a desert scrub of Northwestern Mexico [J].
Arriaga, Laura ;
Maya, Yolanda .
PLANT ECOLOGY, 2007, 189 (02) :213-225
[6]   NUTRIENT CYCLING IN FORESTS [J].
ATTIWILL, PM ;
ADAMS, MA .
NEW PHYTOLOGIST, 1993, 124 (04) :561-582
[7]   Precipitation manipulation experiments - challenges and recommendations for the future [J].
Beier, Claus ;
Beierkuhnlein, Carl ;
Wohlgemuth, Thomas ;
Penuelas, Josep ;
Emmett, Bridget ;
Koerner, Christian ;
de Boeck, Hans J. ;
Christensen, Jens Hesselbjerg ;
Leuzinger, Sebastian ;
Janssens, Ivan A. ;
Hansen, Karin .
ECOLOGY LETTERS, 2012, 15 (08) :899-911
[8]   LITTER MASS-LOSS RATES AND DECOMPOSITION PATTERNS IN SOME NEEDLE AND LEAF LITTER TYPES - LONG-TERM DECOMPOSITION IN A SCOTS PINE FOREST .7. [J].
BERG, B ;
EKBOHM, G .
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE, 1991, 69 (07) :1449-1456
[9]   Factors influencing limit values for pine needle litter decomposition: a synthesis for boreal and temperate pine forest systems [J].
Berg, B. ;
Davey, M. P. ;
De Marco, A. ;
Emmett, B. ;
Faituri, M. ;
Hobbie, S. E. ;
Johansson, M. -B. ;
Liu, C. ;
McClaugherty, C. ;
Norell, L. ;
Rutigliano, F. A. ;
Vesterdal, L. ;
De Santo, A. Virzo .
BIOGEOCHEMISTRY, 2010, 100 (1-3) :57-73
[10]   NITROGEN RELEASE FROM LITTER IN RELATION TO THE DISAPPEARANCE OF LIGNIN [J].
BERG, B ;
MCCLAUGHERTY, C .
BIOGEOCHEMISTRY, 1987, 4 (03) :219-224