Advanced   Register
XTBG OpenIR  > 全球变化研究组  > 期刊论文

title: The influence of drought strength on soil respiration in a woody savanna ecosystem, southwest China
author: Liu, Yuntong;  Li, Jing;  Jin, Yanqiang;  Zhang, Yiping;  Sha, Liqing;  Grace, John;  Song, Qinghai;  Zhou, Wenjun;  Chen, Aiguo;  Li, Peiguang;  Zhang, Shubin
Issued Date: 2018
Subject: Agriculture;  Plant Sciences
Keyword: Drought;  Savanna;  Soil respiration;  Precipitation exclusion;  Climate change
Abstract: Drought is expected to be more frequent and more intense with global warming. Our aim was to investigate how soil respiration would respond to different levels of precipitation exclusion ('drought strength'). We conducted a two-year drought experiment in a woody savanna ecosystem in south west of China, which consisted of four treatments: a control treatment (CK); 30% precipitation exclusion (PE3), 50% precipitation exclusion (PE5) and 70% precipitation exclusion (PE7). The cumulative soil respiration rates were significantly decreased in both rainy and dry seasons as drought became more intense. The sensitivity of soil respiration to soil moisture decreased as drought severity increased. There were bursts of CO2 emission when dry soils were rewetted by rainfall after the dry season. Unlike most other exponential relationships between soil respiration and soil temperature, a parabolic function was observed in all treatments (P < 0.05), which was due to higher soil temperature (> 28 A degrees C) coinciding with insufficient soil water content (< 11% Vol). Respiration rate is best represented by a model which combines soil moisture and temperature. Soil respiration rates were significantly decreased as drought enhanced. The response of soil respiration to drought in the dry season should not be ignored especially when evaluating the effect of drought on soil respiration in a whole year in savanna ecosystems. The quadratic relationship between soil respiration and soil temperature may be important for modeling the response of soil respiration to climate change (drought) in savanna ecosystems.
Department: 其他
Related URLs: 10.1007/s11104-018-3678-6
Source: PLANT AND SOIL
Content Type: 期刊论文
URI: http://ir.xtbg.org.cn/handle/353005/10979
ISSN: 0032-079X
Language: 英语
Appears in Collections:全球变化研究组_期刊论文

Files in This Item:

File SizeFormat
The influence of drought strength on soil respiration in a woody savanna ecosystem, southwest China.pdf1193KbAdobe PDFView  Download


全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Liu, Yuntong,Li, Jing,Jin, Yanqiang,et al. The Influence Of Drought Strength On Soil Respiration In A Woody Savanna Ecosystem, Southwest China[J]. Plant And Soil,2018,428(43102):321-333.

SCI Citaion Data:
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Liu, Yuntong]'s Articles
 [Li, Jing]'s Articles
 [Jin, Yanqiang]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Liu, Yuntong]‘s Articles
 [Li, Jing]‘s Articles
 [Jin, Yanqiang]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
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!
Powered by CSpace