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| 祁连山北坡垂直带土壤碳氮分布特征 | |
| 引用本文： | 胡启武,欧阳华,刘贤德.祁连山北坡垂直带土壤碳氮分布特征[J].山地学报,2006,24(6):654-661. |
| 作者姓名： | 胡启武 欧阳华 刘贤德 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,北京,100039 2. 中国科学院地理科学与资源研究所,北京,100101 3. 甘肃省祁连山水源涵养林研究院,甘肃,张掖,734000 |
| 基金项目： | 国家重点基础研究发展计划项目“青藏高原环境变化及其对全球变化的响应与适应对策”(2005CB422005)~~ |
| 摘 要： | 对祁连山北坡垂直带山地草原、森林、高山灌丛土壤有机碳和全氮的分布特征进行了研究,结果表明:土壤有机碳和全氮含量山地草原<青海云杉林<高山灌丛,表现为随海拔升高呈现上升趋势,且海拔3 100 m以上土壤碳、氮含量显著高于3 100 m以下土壤碳、氮含量;土壤有机碳和全氮在土壤剖面中的垂直分布大多表现为0~10 cm含量高于10 cm以下各层次的含量。土壤有机碳和全氮含量与土壤水分含量呈显著正相关(r=0.913,0.874,n=117,p=0.001),和年平均气温呈显著负相关(r=-0.883,-0.869,n=10,p=0.001),表明了气候因子对有机碳和全氮在垂直带上的空间分布起决定作用。整个垂直带土壤碳氮比在7.8~24.7间,有利于有机质矿化过程中养分的释放。作为祁连山北坡垂直带乔木林主体部分,青海云杉(Picea crassifolia)林土壤碳密度为18.13kg/m2,与一般常绿针叶林土壤碳密度相当,但远小于针叶林中的云冷杉林土壤碳密度。 |
| 关 键 词： | 祁连山 垂直带 有机碳 全氮 |
| 文章编号： | 1008-2786-（2006）6-654-08 |
| 收稿时间： | 2006-03-28 |
| 修稿时间： | 2006-08-01 |
Distribution Characteristics of Soil Organic Carbon and Total Nitrogen along the Altitudinal Belt in the Northern Slope of Qilian Mountains |
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| HU Qiwu,OUYANG Hua,LIU Xiande.Distribution Characteristics of Soil Organic Carbon and Total Nitrogen along the Altitudinal Belt in the Northern Slope of Qilian Mountains[J].Journal of Mountain Research,2006,24(6):654-661. | |
| Authors: | HU Qiwu OUYANG Hua LIU Xiande |
| Institution: | 1, Institute of Geographical Sciences and Natural Resources Research, CAS , Belting 100101, China; 2. Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province , Zhangye Gansu 734000, China ; 3. Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
| Abstract: | A study on soil organic(SOC) and total nitrogen(TN) was conducted in the mountainous grassland,Picea crassifolia forest and alpine shrubs along the altitudinal belts in the northern slope of Qilian Mountains,results showed that SOC and TN increased with elevation,in the order of mountain grassland |
| Keywords: | Qilian Mountains altitudinal belt SOC TN |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |