干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠西南缘柽柳沙包的土壤化学计量特征

Arid

	古尔班通古特沙漠西南缘柽柳沙包的土壤化学计量特征
其他题名	Soil stoichiometric characteristics of Tamarix cones in the southwest margin of Gurbantunggut Desert
	董正武; 玉米提·哈力克; 李生宇; 雷加强; 赵英
来源期刊	生态学报
ISSN	1000-0933
出版年	2020
卷号	40 期号:20 页码:7389-7400
中文摘要	柽柳沙包作为沙漠地区一种特殊的生物地貌景观,在维持区域生态环境稳定中发挥着极为重要的作用。以古尔班通古特沙漠西南缘的典型柽柳沙包为研究对象,通过对土壤含水量、pH值、电导率、粒径及土壤有机碳(SOC)、总氮(TN)、总磷(TP)含量的分析,探讨了古尔班通古特沙漠柽柳沙包中土壤C、N、P的化学计量特征、垂直变化规律及影响因素。结果表明:(1)随着土层深度增加,SOC和TN均呈先升高后降低的变化,且C、N在表层土壤含量最高,具有肥岛效应;总磷(TP)含量总体变化幅度较小,呈弱变异。随着土层深度增加,土壤C/N呈先降低后升高再降低的变化,C/P和N/P呈先降低后升高的变化。( 2)与全球及中国平均值相比,古尔班通古特沙漠柽柳沙包土壤C、N、P、C/N、C/P及N/P均相对较低,而C/N相对较高,土壤养分缺乏程度表现为N >C>P。土壤养分元素及化学计量比多呈显著的线性关系,且土壤化学计量比在0200 cm层主要受C、N的制约,在200500 cm层不仅受C、N的制约,也受P的限制。(3)土壤C、N、P化学计量特征在0200 cm层主要受降水、温度及蒸发等气候因素的影响,而在200500 cm层易受土壤含水量的影响;此外,粘、粉、沙粒含量在整个土壤剖面中对土壤C、N、P化学计量特征也具有明显的影响。
英文摘要	Tamarix cones,as one of special bio-geographical phenomena,play a crucial role in maintaining the stability of desert environments.The main objectives of this study were to explore soil carbon(C),nitrogen(N),and phosphorus(P) stoichiometric features,and to clarify the relationships between soil C,N,P stoichiometry and environmental factors in the southwest of Gurbantunggut Desert.Soil samples were collected in the Tamarix cones for analyzing soil physico-chemical properties including pH,electrical conductivity(EC),water content,grain composition,organic carbon(OC),total nitrogen(TN) and total phosphorus(TP) content.The results showed that(1) with the increase of soil depth,the SOC and TN decreased firstly and then increased,and soil C and N were the highest in the surface layer,showingfertile island effect;and TP was weakly fluctuated along the soil profiles.With the increase of soil depth,C/N decreased firstly and then increased,and decreased again.C/P and N/P decreased firstly and then increased.(2) Compared with the global soils and the averages of China,soil C,N,P,C/P and N/P in the Tamarix cones were relatively lower,but C/N was relatively higher.The degree of deficiency of soil nutrient elements were ranked in order N>C>P.The soil nutrients and their stoichiometric ratios exhibited a significantly linear relationships with other nutrients,and the stoichiometric ratios were dominated by C and N in surface layers(0200 cm),while in deep layers(200500 cm) they were limited not only C and N,but also P.(3) In the soil layers of 0200 cm,soil nutrients and its stoichiometry were susceptible to climatic factors such as precipitation,temperature and evaporation.However,in the soil layers of 200500cm,soil nutrient and its stoichiometriy was influenced by soil water content..Soil clay,silt and sand also had significant effects on soil C,N,P and their stoichiometric ratios throughout the soil profiles.
中文关键词	柽柳沙包 ; 土壤化学计量 ; 环境因子 ; 古尔班通古特沙漠
英文关键词	Tamarix cones soil stoichiometry environmental factor Gurbantunggut Desert
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:6838641
来源机构	中国科学院新疆生态与地理研究所 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353771
作者单位	董正武, 新疆大学资源与环境科学学院;;中国科学院新疆生态与地理研究所;;新疆师范大学生命科学学院, ;;;;, 乌鲁木齐;;乌鲁木齐;;乌鲁木齐, ;;;; 830046;;830011;;830054. 玉米提·哈力克, 新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国. 李生宇, 中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国. 雷加强, 中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国. 赵英, 鲁东大学资源与环境工程学院, 烟台, 山东 264025, 中国.
推荐引用方式 GB/T 7714	董正武,玉米提·哈力克,李生宇,等. 古尔班通古特沙漠西南缘柽柳沙包的土壤化学计量特征[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2020,40(20):7389-7400.
APA	董正武,玉米提·哈力克,李生宇,雷加强,&赵英.(2020).古尔班通古特沙漠西南缘柽柳沙包的土壤化学计量特征.生态学报,40(20),7389-7400.
MLA	董正武,et al."古尔班通古特沙漠西南缘柽柳沙包的土壤化学计量特征".生态学报 40.20(2020):7389-7400.