干旱区生态环境知识资源中心(Arid): 盐生环境下3种荒漠植物叶凋落物分解动态特征

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	盐生环境下3种荒漠植物叶凋落物分解动态特征
其他题名	Litter Decomposition of Three Types of Forestsin South Slope in Saline Environment
	葛留威; 吕瑞恒; 李荔; 张海涛; 周正立; 梁继业
来源期刊	东北林业大学学报
ISSN	1000-5382
出版年	2016
卷号	44 期号:5 页码:39-43,47
中文摘要	以盐生环境下3种荒漠群落优势种叶凋落物(胡杨、多枝柽柳、胀果甘草)为研究对象,采用凋落袋法,了解其分解特征、养分释放规律,以及土壤温湿度变化对其分解的影响。结果表明:经过390 d的分解,胡杨、多枝柽柳、胀果甘草叶凋落物质量损失率随时间延长而逐渐增大,质量损失率分别为20.97%、12.04%、40.30%。胡杨、多枝柽柳、胀果甘草分解系数依次为0.235 3、0.128 3、0.510 8,其叶分解50%所需时间分别为2.9、5.4、1.4 a,分解95%所需时间分别为12.7、23.4、5.96 a。胡杨、多枝柽柳、胀果甘草叶凋落物N元素释放率分别为51.23%、24.03%、51.44%,均符合富集-释放模式; P元素释放率分别为39.87%、25.04%、43.60%,K元素释放率分别为42.75%、31.45%、57.35%。3种植物叶凋落物分解速率与土壤温度、湿度相关性较强,对其分解过程有显著(P<0.05)影响。
英文摘要	Based on the foliar litter of typical three kinds of desert plants (Populus euphratica Oliv,Tamarix ramosissima Ledeb,Glycyrrhiza inflata Batalin) in south slope in saline environment,we used the litter bag method to study the nutrient releaserule of plants in the study area,and the impact of changes in soil temperature and humidity on its decomposition. After 390 dof decomposition,the leaf litter weight loss rates s of P. euphratica,T. ramosissima,and G. inflata were increased with thetime,and the annual weight loss rates of litters were 20.97%,12.04% and 40.30%,respectively. The annual decompositionrate estimated by the exponential decay model were 0.235 3,0.128 3 and 0.510 8,and the times required for 50% ofleaf decomposition were 2.9,5.4 and 1.4 years for P. euphratica and T. ramosissima and G. inflata,and 12.7,23.4,and5.9 years for 95% of leaf decomposition,respectively. N release rate of leaves of P. euphratica and T. ramosissima and G.inflata were 51.23%,24.03% and 51.44%,respectively,with a decomposition pattern of release-enrichment. P releaserate of leaves were 39.87%,25.04% and 43.60%,and K release rate of leaves were 42.75%,31.45% and 57.35% of P.euphratica and T. ramosissima and G. inflata,respectively. By linear regression,there were significantly positive correlationsbetween litter decomposition rate and soil temperature,and soil moisture content significantly (P<0.05).
中文关键词	盐生环境 ; 叶凋落物 ; 质量损失率 ; 分解速率
英文关键词	Saline environment Leaf litter Weight loss rate Decomposition rate
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5731227
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234153
作者单位	塔里木大学, 阿拉尔, 新疆 843300, 中国
推荐引用方式 GB/T 7714	葛留威,吕瑞恒,李荔,等. 盐生环境下3种荒漠植物叶凋落物分解动态特征[J],2016,44(5):39-43,47.
APA	葛留威,吕瑞恒,李荔,张海涛,周正立,&梁继业.(2016).盐生环境下3种荒漠植物叶凋落物分解动态特征.东北林业大学学报,44(5),39-43,47.
MLA	葛留威,et al."盐生环境下3种荒漠植物叶凋落物分解动态特征".东北林业大学学报 44.5(2016):39-43,47.