中国科学院生态环境研究中心机构知识库
Advanced  
RCEES OpenIR  > 城市与区域生态国家重点实验室  > 期刊论文
题名: Multi-scale variability of soil carbon and nitrogen in the middle reaches of the Heihe River basin, northwestern China
作者: Li, Danfeng; Gao, Guangyao; Lu, Yihe; Fu, Bojie
刊名: CATENA
出版日期: 2016-02
卷号: 137, 页码:328-339
关键词: Soil nutrients ; Spatial distribution ; Landscape heterogeneity ; Arid region
DOI: 10.1016/j.catena.2015.10.013
部门归属: 城市与区域生态国家重点实验室
英文摘要: Insight into the variability of soil carbon and nitrogen at multiple scales is essential for accurately recognizing their distribution and stocks in arid inland river basins where landscape patterns are complex. For this objective, soil sampling and vegetation survey were conducted in 2012 to estimate the regional distribution and analyze the differences of soil organic carbon (SOC), total carbon (TC, the summation of organic and inorganic carbon) and total nitrogen (TN) among landscapes (cropland, desert, woodland and grassland) and sub-regions in the middle reaches of the Heihe River basin, northwestern China. The effects of soil properties, vegetation conditions and management practices on soil C and TN were determined. The results showed that the average regional densities of SOC. TC and TN were 68.2, 216.9 and 6.90 Mg ha(-1) in the 0-80 cm soil profile, respectively, and approximately 16% and 31% were stored in the 0-10 and 0-20 cm layers, respectively. Cropland stored the highest SOC and TN, whereas grassland stored the highest TC and woodland had the lowest SOC and TC Variability in soil texture, frequency and amount of irrigation, fertilizer type and fertilization rate contributed to the differences in SOC and TN densities among croplands in the three sub-regions. Cropland and woodland far from the river bank (approximately 16-18 km away) accumulated more SOC. TC and TN than those near the river bank (approximately 4 km away). Soil texture was the predominant factor influencing SOC and TN in the surface soil of woodland. Aboveground biomass of shrubs and herbs, especially fresh weight, was regarded as a dominant factor affecting TC in desert soil and SOC, TC and TN in grassland soil. The results of this study are essential for accurately recognizing the status and variability of soil C and TN in complex landscape patterns in arid regions. (C) 2015 Elsevier B.V. All rights reserved.
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35630
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Multi-scale variability of soil carbon and nitrogen in the middle reaches of the Heihe River basin, northwestern China.pdf(1080KB)期刊论文作者接受稿开放获取View Download
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Li, Danfeng]'s Articles
[Gao, Guangyao]'s Articles
[Lu, Yihe]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Li, Danfeng]‘s Articles
[Gao, Guangyao]‘s Articles
[Lu, Yihe]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Multi-scale variability of soil carbon and nitrogen in the middle reaches of the Heihe River basin, northwestern China.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院生态环境研究中心 - Feedback
Powered by CSpace