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delta C-13 values of plants as indicators of soil water content in modern ecosystems of the Chinese Loess Plateau
Wei, Jie1; Liu, Weiguo1,2; Cheng, Jimin3,4; Li, Weijun5
2015-04-01
发表期刊ECOLOGICAL ENGINEERING
ISSN0925-8574
卷号77页码:51-59
文章类型Article
摘要

We selected typical restored grassland along a chronosequence of natural vegetation restoration on the Chinese Loess Plateau ( CLP) and determined the soil water content once each month from April to October as well as the stable carbon isotope composition of six plant species ( C3), for both the aboveground ( d13CAP) and belowground ( d13CBP) portions, to examine the sensitivity of plant d13C values to soil water content in modern ecosystems. The study sites include three restored grasslands, which have been restored for 3 years ( RG1), 13 years ( RG2) and 23 years ( RG3) since farmland abandonment. Results showed that the soil water content increased significantly with vegetation restoration, with means of 7.3%, 10.7% and 13.1% for RG1, RG2 and RG3, respectively. The multispecies mean d13CAP and d13CBP values were 27.1m, 27.5m, 28m and 26.9m, 27.4m, 27.6m in RG1, RG2, RG3, respectively, decreasing significantly with vegetation restoration. Further analysis indicates that the multispecies mean d13CAP and d13CBP values were negatively correlated with soil water content, with r2 values of 0.72 and 0.98, respectively. The d13CAP and d13CBP values of all individual species were also significantly and negatively correlated with soil water content, except for Saussurea japonica, for which the d13CBP value increased with soil water content. Of all the plant species, the responses of both the d13CAP and d13CBP values to soil water content were more sensitive for Potentilla bifurca. We suggest that the d13CAP and d13CBP values of individual plant species are likely reliable indicators of the soil water content of the specific year of sampling and a longer- term ( several years) integrated signal, respectively. a 2015 Elsevier B. V. All rights reserved.

关键词Vegetation Restoration Delta C-13 Soil Water Content Negative Correlation Indicator
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.ecoleng.2015.01.012
关键词[WOS]Carbon-isotope Discrimination ; Rainfall Gradient ; Organic-matter ; Electromagnetic Determination ; Natural-abundance ; Atmospheric Co2 ; Use Efficiency ; Desert Plants ; Short-term ; Vegetation
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Engineering
WOS类目Ecology ; Engineering, Environmental ; Environmental Sciences
WOS记录号WOS:000351705100008
出版者ELSEVIER SCIENCE BV
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9346
专题加速器质谱中心
通讯作者Wei, Jie
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary, Xian 710075, Peoples R China
2.Xi An Jiao Tong Univ, Sch Human Settlement & Civil Engn, Xian 710049, Peoples R China
3.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
4.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China
5.Adm Off Yunwu Mt Guyuan, Ningxia 756000, Guyuan, Peoples R China
推荐引用方式
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Wei, Jie,Liu, Weiguo,Cheng, Jimin,et al. delta C-13 values of plants as indicators of soil water content in modern ecosystems of the Chinese Loess Plateau[J]. ECOLOGICAL ENGINEERING,2015,77:51-59.
APA Wei, Jie,Liu, Weiguo,Cheng, Jimin,&Li, Weijun.(2015).delta C-13 values of plants as indicators of soil water content in modern ecosystems of the Chinese Loess Plateau.ECOLOGICAL ENGINEERING,77,51-59.
MLA Wei, Jie,et al."delta C-13 values of plants as indicators of soil water content in modern ecosystems of the Chinese Loess Plateau".ECOLOGICAL ENGINEERING 77(2015):51-59.
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