干旱区生态环境知识资源中心(Arid): 黑河下游黑果枸杞叶片C、N、P特征及对土壤水盐的响应

Arid

	黑河下游黑果枸杞叶片C、N、P特征及对土壤水盐的响应
其他题名	Characteristics of C,N,P,and their response to soil water and salt in leaves of Lycium ruthenicum in the lower reaches of the Heihe River
	李善家 1; 苟伟 2; 王辉 2; 伍国强 2; 苏培玺3
来源期刊	生态学报
ISSN	1000-0933
出版年	2019
卷号	39 期号:19 页码:7189-7196
中文摘要	研究植物叶片碳(C)、氮(N)、磷(P)计量特征及其与环境因子相关性将为揭示植物对营养元素需求和环境互馈能力提供理论基础。以内蒙古额济纳旗黑河下游距主河道由近及远选择的8个黑果枸杞(Lycium ruthenicum Murr.)优势种群落为研究对象,分析其在不同水分、盐分土壤层环境下叶片C、N、P含量及比值特征,探讨黑果枸杞群落分布的主要限制元素和土壤水盐对其化学计量的影响。研究结果显示:黑果枸杞群落C含量为(331.5611.99) mg/g,N含量为(13.172.92) mg/g,P含量为(2.481.64) mg/g,元素C与N、N与P之间呈正相关关系,C与P呈负相关关系,N与C:N、P与C:P及N:P之间呈极显著负相关关系(P<0.01);浅层土壤(0-40 cm)水分与P含量呈极显著负相关(P<0.01),与C:P呈显著正相关(P<0.05),深层土壤(40-80 cm)水分、盐分均与N含量呈显著负相关(P<0.05),与C:N呈极显著正相关(P<0.01)。结果表明:黑果枸杞C:N主要由N限制,C:P、N:P主要由P限制,N:P小于限制性养分理论阈值14,指示其生长主要受到N限制;黑果枸杞叶片N含量及C:N比值对深层土壤水分和盐分具有协同响应特征,反映了荒漠植物在干旱盐渍环境中的抗逆境策略。
英文摘要	Studying the carbon (C),nitrogen (N),and phosphorus (P) characteristics of leaves and their correlation with environmental factors provides a theoretical basis for revealing the plant's demand for nutrient elements,and the adaptability and feedback to the environment.Perpendicular to the channel of the Heihe River,eight communities dominated by Lycium ruthenicum Murr were selected,from the closest to the farthest,in Ejina Banner,Inner Mongolia.The contents of C,N and P in different water and salt environments were analysed,to explore the main limiting elements of the distribution of communities and the effects of soil water and salinity on their stoichiometry.The results showed that the average C content in the communities was (331.5611.99) mg/g,the N content was (13.172.92) mg/g,and the P content was (2.491.64) mg/g.C and N,and N and P were positively correlated,and C and P were negatively correlated;N and C-N,P and C:P,and N:P showed a significant negative correlation.For shallow soil (0-40 cm),there was a significant negative correlation between water and P contents (P<0.01),and a significant positive correlation with C:P (P<0.05).There was a significant negative correlation between water and soluble total salt and N content in deep soil (40-80 cm)(P<0.05),which was significantly positively correlated with the C:N ratio (P<0.01).Previous studies have shown that:C:N is mainly restricted by N;C:P and N:P are mainly restricted by P;and N:P is smaller than the theoretical limit of 14 for limiting nutrients,indicating that its growth is mainly limited by N.The content of N and C:N have the same response characteristics to deep soil moisture and salinity,reflecting the anti-adversity strategy of desert plants in arid saline environment,which is one of the strategies that the community uses to adapt to drought and saline-alkali stresses.
中文关键词	黑河下游 ; 黑果枸杞 ; 化学计量 ; 土壤水盐
英文关键词	lower Heihe River Lycium ruthenicum Murr stoichiometry soil water and salt content
语种	中文
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6597283
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316254
作者单位	1.兰州理工大学生命科学与工程学院;;中国科学院西北生态环境资源研究院, ;;, 兰州;;兰州, ;; 730050;;730000; 2.兰州理工大学生命科学与工程学院, 兰州, 甘肃 730050, 中国; 3.中国科学院西北生态环境资源研究院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	李善家,苟伟,王辉,等. 黑河下游黑果枸杞叶片C、N、P特征及对土壤水盐的响应[J]. 中国科学院西北生态环境资源研究院,2019,39(19):7189-7196.
APA	李善家,苟伟,王辉,伍国强,&苏培玺.(2019).黑河下游黑果枸杞叶片C、N、P特征及对土壤水盐的响应.生态学报,39(19),7189-7196.
MLA	李善家,et al."黑河下游黑果枸杞叶片C、N、P特征及对土壤水盐的响应".生态学报 39.19(2019):7189-7196.