气候变化领域集成服务门户(CCPortal): 荒漠植物红砂（Reaumuria soongorica）叶片元素和水分含量与土壤因子的关系

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	荒漠植物红砂（Reaumuria soongorica）叶片元素和水分含量与土壤因子的关系
其他题名	Relationships between soil factors and leaf element,water contents in desert plant Reaumuria soongorica
	马剑英; 陈发虎; 夏敦胜; 孙惠玲; 王刚
发表日期	2008
ISSN	1000-0933
卷号	28 期号:3 页码:983-992
中文摘要	通过测定中国境内荒漠植物红砂（Reaumuria soongorica）主要分布区21个自然种群407个植株叶片的氮（N）、磷（P）、钾（K）含量、有机质和叶片含水量,以及不同种群内土壤含水量、可溶性盐分含量、有机质、全氮、全磷含量等土壤理化性状指标,分析不同自然种群红砂叶片元素含量与土壤环境因子之间的关系。研究结果表明,随着不同土壤层含水量的增加,红砂叶片N含量和叶片含水量显著增加,而叶片K含量显著降低。土壤养分含量、可溶性盐分含量与红砂叶片P含量显著正相关,与叶片含水量显著负相关。随着土壤pH值的增加,红砂叶片N含量显著下降,叶片含水量显著增加。说明不同自然种群中红砂叶片养分含量受土壤状况的影响显著,不同土壤理化性状指标对红砂叶片元素含量的贡献显著不同。土壤水分含量是生境中影响红砂叶片特征的最关键因子,而红砂叶片含水量则最易受各种土壤理化性状的影响。生境中土壤含水量对红砂各种元素含量的影响和红砂叶片含水量对不同土壤条件的这种响应模式支持了红砂是一种以提高水分利用效率而适应于极端干旱生境的典型超旱生植物。
英文摘要	Reaumuria soongorica is a main dominant and constructive species of the desert shrubbery vegetation in arid region.We tried to investigate the variations in foliar characteristics of this desert plant and identify the major factor which influences the variations in the major distribution areas.21 populations were selected at altitudes 394-1987 m,latitudes 36°10＇-44°33＇N and longitudes 81°43＇-106°37＇E.We measured nitrogen,phosphorus,potassium,organic and water contents in leaves of 407 individuals,and soil physicochemical properties including nitrogen,phosphorus,organic,water contents and total dissolved solids.Soil conditions had significant effects on foliar traits.Increased soil water content enhanced leaf nitrogen and leaf water contents in R.soongorica,and decreased leaf potassium content significantly.The soil nitrogen,phosphorus contents and total dissolved solids were positively correlated with leaf phosphorus,but negatively correlated with leaf water content.Leaf nitrogen content decreased and leaf water content increased significantly with increasing soil pH.We concluded that soil water content was the primary factor affecting foliar characteristics and that leaf water content was particularly influenced by environmental factors in different natural populations.Leaf water content in the desert plant R.soongorica respond to soil conditions reinforces that it is a super-xerophil improved water-use efficiency in this adaptive strategy to desert environment.
关键词	荒漠生态系统红砂（Reaumuria 叶片含水量叶片元素含量土壤条件
英文关键词	soongorica）;desert ecosystem;Reaumuria soongorica;leaf water content;leaf element content;soil factors
语种	中文
WOS研究方向	Plant Sciences
WOS类目	PLANT SCIENCES
CSCD记录号	CSCD:3257531
来源期刊	生态学报
来源机构	中国科学院寒区旱区环境与工程研究所 ; 兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1668
推荐引用方式 GB/T 7714	马剑英,陈发虎,夏敦胜,等. 荒漠植物红砂（Reaumuria soongorica）叶片元素和水分含量与土壤因子的关系[J]. 中国科学院寒区旱区环境与工程研究所, 兰州大学, 中国科学院青藏高原研究所,2008,28(3):983-992.
APA	马剑英,陈发虎,夏敦胜,孙惠玲,&王刚.(2008).荒漠植物红砂（Reaumuria soongorica）叶片元素和水分含量与土壤因子的关系.生态学报,28(3),983-992.
MLA	马剑英,et al."荒漠植物红砂（Reaumuria soongorica）叶片元素和水分含量与土壤因子的关系".生态学报 28.3(2008):983-992.