CO2浓度升高对小麦秸秆性质、数量及其分解的影响

被引:4
作者
陈春梅 [1 ]
谢祖彬 [1 ]
朱建国 [1 ]
窦森 [2 ]
机构
[1] 中国科学院南京土壤研究所土壤与可持续农业国家重点实验室
[2] 吉林农业大学资源与环境学院
关键词
CO2浓度升高小麦秸秆C; N分解微生物量碳嫌气;
D O I
暂无
中图分类号
S512.1 [小麦];
学科分类号
0901 ;
摘要
在江都FACE平台上观测了常N水平下大气CO2浓度升高对小麦秸秆数量和性质的影响,并利用稻季淹水培养试验研究了CO2浓度升高引起的小麦秸秆量和质的改变对其腐解和土壤微生物量碳的影响,结果表明:CO2浓度升高显著降低了麦秸中N含量,导致麦秸C/N和木质素/N比显著增加,但对麦秸其他生化组成——可溶物、半纤维素、纤维素、木质素和酚含量均无影响;CO2浓度升高引起的小麦秸秆性质改变对麦秸及其含C物质的分解均无显著影响,但显著减缓了含N物质的分解;若将收获的麦秸全部还田,CO2浓度升高引起的小麦秸秆量的增加也没有显著影响麦秸及其含C、N物质的分解。由于高CO2浓度导致的麦秸性质改变对土壤微生物量碳无显著影响,这也是CO2浓度升高引起麦秸性质变化幅度太小不足以影响麦秸及其含C物质分解的主要原因。
引用
收藏
页码:1 / 5
页数:5
相关论文
共 13 条
[1]   Elevated CO2, litter chemistry, and decomposition:: a synthesis [J].
Norby, RJ ;
Cotrufo, MF ;
Ineson, P ;
O'Neill, EG ;
Canadell, JG .
OECOLOGIA, 2001, 127 (02) :153-165
[2]   Elevated atmospheric carbon dioxide concentration:: effects of increased carbon input in a Lolium perenne soil on microorganisms and decomposition [J].
van Ginkel, JH ;
Gorissen, A ;
Polci, D .
SOIL BIOLOGY & BIOCHEMISTRY, 2000, 32 (04) :449-456
[3]   Does elevated atmospheric CO2 concentrations affect wood decomposition? [J].
Cotrufo, MF ;
Ineson, P .
PLANT AND SOIL, 2000, 224 (01) :51-57
[4]   Decomposition of leaf and root tissue of three perennial grass species grown at two levels of atmospheric CO2 and N supply [J].
Gorissen, A ;
Cotrufo, MF .
PLANT AND SOIL, 2000, 224 (01) :75-84
[5]   Review of elevated atmospheric CO2 effects on agro-ecosystems:: residue decomposition processes and soil C storage [J].
Torbert, HA ;
Prior, SA ;
Rogers, HH ;
Wood, CW .
PLANT AND SOIL, 2000, 224 (01) :59-73
[6]   The effect of elevated CO2 and N availability on tissue concentrations and whole plant pools of carbon-based secondary compounds in loblolly pine (Pinus taeda) [J].
Gebauer R.L.E. ;
Strain B.R. ;
Reynolds J.F. .
Oecologia, 1997, 113 (1) :29-36
[7]   Decomposition of litter produced under elevated CO2: Dependence on plant species and nutrient supply [J].
Franck, VM ;
Hungate, BA ;
Chapin, FS ;
Field, CB .
BIOGEOCHEMISTRY, 1997, 36 (03) :223-237
[8]   Elevated CO2 reduces field decomposition rates of Betula pendula (Roth) leaf litter [J].
Cotrufo, MF ;
Ineson, P .
OECOLOGIA, 1996, 106 (04) :525-530
[9]  
Carbon-13 input and turnover in a pasture soil exposed to long-term elevated atmo-spheric CO2..Van Kessel C;Nitschelm J;Horwath W.R.et al;.Global Change Biology.2000,
[10]   土壤微生物生物量和呼吸强度对大气CO2浓度升高的响应 [J].
苑学霞 ;
褚海燕 ;
林先贵 ;
尹睿 ;
胡君利 ;
朱建国 .
植物营养与肥料学报, 2005, (04) :564-567