干旱区生态环境知识资源中心(Arid): 川西北高寒沙地不同年限高山柳土壤生态化学计量及储量变化特征

Arid

	川西北高寒沙地不同年限高山柳土壤生态化学计量及储量变化特征
其他题名	Effect of Salix cupularis plantations on soil stoichiometry and stocks in the alpine-cold desert of northwestern Sichuan
	何佳; 胡玉福; 舒向阳; 王琴; 贾安都; 严星
来源期刊	草业学报
ISSN	1004-5759
出版年	2018
卷号	27 期号:4 页码:27-33
中文摘要	以川西北高寒沙地6,18和34年高山柳为研究对象,探究其林下C,N,P生态化学计量变化特征。结果表明,随着种植年限增加,0~60cm土层土壤C∶N∶P呈上升趋势。其中,20~40cm和40~60cm土层C∶N和C∶P呈上升趋势,而N∶P呈显著下降趋势(P<0.05)。随种植年限增加,0~60cm土层有机碳(SOC)储量呈上升趋势,全氮(TN)、全磷(TP)储量呈下降趋势。其中,0~20cm土层SOC、TN和TP含量均显著升高(P<0.05)。双因素方差分析结果表明,土层深度显著影响着SOC,TN,TP含量及其化学计量比,种植年限对除TP以外均有显著影响,土层深度*种植年限对除C∶N和TP以外均有显著影响(P<0.01)。研究表明,在生态修复过程中, C、N、P的不平衡输入可能会加强土壤养分的失衡状况。
英文摘要	Based on their different plantation ages,6,18and 24yr old Salix cupularis plantations in the alpinecold desert of Northwest Sichuan were selected to explore the nature of ecological stoichiometry changes in C, N and P under S.cupularis.The results showed that the ratio of C∶N∶P increased with plantation age in the 0-60cm soil layer.Soil C∶N and C∶P increased with plantation age in the 20-40cm and 40-60cm soil layers, but the soil N∶P significantly decreased with plantation age(P<0.05).Soil organic carbon(SOC)stock increased with forest development in the 0-60cm layers,but total N (TN)and total P(TP)stocks showed the opposite trend.SOC,TN and TP significantly increased in the 0-20cm soil layer(P<0.05).A two-way ANOVA indicated that soil depth,plantation age and soil depthplantation age significantly affected soil stoichiometric characteristics and stocks(P<0.01).The exceptions were soil TP contents,which did not significantly differ with plantation age,and soil C∶N and P stock,which did not significantly differ by soil depth plantation age.The results show that imbalances in soil C∶N∶P occurred with plantation aging due to imbalances of C,N and P input.
中文关键词	高寒沙地 ; 高山柳 ; 碳、氮、磷生态化学计量
英文关键词	alpine-cold desertland Salix cupularis C,N,P ecological stoichiometry
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6216179
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237353
作者单位	四川农业大学资源学院, 成都, 四川 611130, 中国
推荐引用方式 GB/T 7714	何佳,胡玉福,舒向阳,等. 川西北高寒沙地不同年限高山柳土壤生态化学计量及储量变化特征[J],2018,27(4):27-33.
APA	何佳,胡玉福,舒向阳,王琴,贾安都,&严星.(2018).川西北高寒沙地不同年限高山柳土壤生态化学计量及储量变化特征.草业学报,27(4),27-33.
MLA	何佳,et al."川西北高寒沙地不同年限高山柳土壤生态化学计量及储量变化特征".草业学报 27.4(2018):27-33.