文献类型：期刊文献

中文题名：柴达木盆地白刺叶片δ^(13)C与叶片和土壤养分指标的关系

英文题名：Relationship on Leafδ13C and Nutrients in Leaf and Soil of Different Nitraria tangutorum Populations in Tsaidam Basin

作者：邱权[1] 李吉跃[1] 王军辉[2] 王宁[3] 孙奎[3] 贾子瑞[2] 董蕾[1] 潘昕[1]

第一作者：邱权

机构：[1]华南农业大学林学院;[2]中国林业科学研究院林业研究所国家林业局林木培育重点实验室;[3]青海省农林科学院野生植物资源研究所

年份：2013

卷号：33

期号：11

起止页码：2301-2308

中文期刊名：西北植物学报

外文期刊名：Acta Botanica Boreali-Occidentalia Sinica

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：林业公益性行业科研专项(200904033);农业科技成果转化资金项目(2011GB24320010)

语种：中文

中文关键词：δ13C;叶片营养i土壤养分;白刺{柴达木盆地

外文关键词：leaf δ13C; leaf nutrients ; soil nutrients ; Nitraria tangutorum ; Tsaidam Basin

分类号：Q945.79

摘要：在青海省柴达木盆地选择6个重要的唐古特白刺分布区域,通过测定不同白刺居群的叶片营养元素、土壤养分含量和叶片碳同位素组成δ13 C,对比不同白刺居群间的叶片δ13 C特征差异,并分析白刺叶片δ13 C与地理位置信息及叶片营养和土壤养分含量指标的关系。结果显示:(1)白刺居群间叶片δ13 C存在显著空间变异性,其叶片δ13 C变化范围在-25.47‰^-27.66‰之间,平均为-26.66‰。(2)纬度、经度和海拔是白刺叶片δ13 C重要影响因子,白刺叶片δ13 C与纬度、经度和海拔分别呈极显著负相关,正相关和正相关关系(n=10)。(3)白刺叶片δ13 C与叶片有机C含量、N、P、K含量总体均呈负相关关系,但仅叶片有机C含量达到极显著水平(n=30),其余均未达到显著性水平(n=30)。(4)叶片δ13 C与表层土壤(0~15cm)有机质、全N、速效K含量呈极显著负相关关系(n=30),与全P、碱解N和有效P含量呈显著负相关关系(n=30),并与15~30cm土壤有机质和全N含量显著负相关(n=30),但叶片δ13 C与30~45cm土壤各化学指标相关性均不显著(n=30)。研究表明,环境因子纬度、经度、海拔,叶片有机C含量,以及立地土壤全N、全P、碱解N、有效P、速效K含量的变化均显著影响柴达木盆地唐古特白刺居群叶片δ13 C值。
Abstract： In this study, 10 Nitraria tangutorum populations in six important N. tangutorum distribution areas in Tsaidam Basin were selected as research objeets~ to make a comparison on the differences in leaf δ13C characteristics of different N, tangutorum populations and analysis the correlations between leaf δ13C and nutrients contents in leaf and soi｜~by measuring their leaδ13C, leaf nutrients,organic carbon （C）, ni- trogen （N）, phosphorus （P） and potassium （K） contents and soil nutrients, pH, organic matter （OM）, to- tal nitrogen（N）, total phosphorus（P）, total potassium（K）, hydrolysis N, available P and available K con- tents. The results showed that ： （1） there was a significant difference in leaf ~13 C between different N. tan- gutorum populations, leaf 913 C varied from -- 27. 66~0 tO -- 25. 47X0, and their leaf average ~la C was --26.66O/ooo. （2）Leaf ~13C showed a extremely significant negative correlation with latitude, positive correla- tion with longitude and positive correlation with altitude respectively （n= 10）, thus latitude,longitude and altitude were important factors for leaf ~13C. （3）Leaf ~t3C showed a negative correlation with leaf N,P and K contents,but this correlation was not significant （n= 30）, whereas leaf ~3C had a extremely significant correlation with leaf organic C content （n=30）. （4）Leaf ~3C showed a extremely significant negative cor- relation between OM,total N and available K contents in surface soil （0~15 cm） （n=30） and a significant negative correlation between total P, hydrolysis N and available P in surface soil （0~ 15 cm）（n= 30） re- spectively. In addition,leaf ~3C was extremely significantly correlated with OM and total N content in soil （15~30 cm） ,but it had no significant correlation with nutrients content in soil （30~45 cm）. In general, latitude, longitude, altitude, leaf organic C content, soil total N, total P, hydrolysis N, available P and availa- ble K contents all had significant influence on ~13C in leaf of N. tangutorum.