Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau | |
Liu, WG (Liu, Weiguo)[ 1,2 ]; Wei, J (Wei, Jie)[ 1,3 ]; Cheng, JM (Cheng, Jimin)[ 4 ]; Li, WJ (Li, Weijun)[ 5 ] | |
2014-10-01 | |
发表期刊 | CATENA |
卷号 | 121页码:321-329 |
文章类型 | 期刊论文 |
摘要 | Understanding the distribution of soil inorganic carbon (SIC) is meaningful and necessary for assessing soil carbon sequestration. However, changes in SIC following vegetation restoration are still not well studied in the Chinese Loess Plateau (CLP), which has undergone extensive changes from farmland to grassland. Here, we chose three study sites, farmland (FL), grassland restored for 12 years (RG-1) and grassland restored for 22 years (RG-2). The changes of SIC storage were determined under the conversion from a farmland ecosystem to extensively used grassland during the past twenty years. Results showed that the SIC content decreased with vegetation restoration, which averaged 18.5, 13.2 and 11.8 g kg(-1) in FL RG-1 and RG-2, respectively. The SIC content was significantly lower in the top 80 cm in RG-1 and RG-2 than in FL, but showed little variance at depths of 80-200 cm among the study sites. It illustrated that the portion of carbonate was most likely released to the atmosphere as CO2 temporarily due to soil acidification and the increase of soil moisture in restored grassland. The lower delta C-13 value of SIC in RG-1 and RG-2 than in FL was most likely due to the soil carbonate exchanging with more soil respired CO2, with increasing vegetation coverage in restored grassland. Our results indicate that the SIC storage deceases in the restored grassland in situ probably due to the decrease of soil pH and the increase in soil water content The SIC plays an important role when assessing the capacity of carbon sequestration with vegetation restoration in the semi-arid CLP. |
关键词 | Grassland Restoration Soil Inorganic Carbon Δ13c Value Of Soil Carbonate Ph Soil Water Content Soil Co2 |
DOI | 10.1016/j.catena.2014.05.019 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9752 |
专题 | 加速器质谱中心 |
通讯作者 | Liu, WG (Liu, Weiguo)[ 1,2 ] |
作者单位 | 1.tate Key Laboratory of Loess and Quaternary, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; 2.School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 3.Graduate School of Chinese Academy of Sciences, Beijing 100049, China; 4.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources,Yangling, 712100 Shaanxi, China; 5.Administrative Office of Yunwu Mountain in Guyuan, Guyuan, 756000 Ningxia, China |
推荐引用方式 GB/T 7714 | Liu, WG ,Wei, J ,Cheng, JM ,et al. Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau[J]. CATENA,2014,121:321-329. |
APA | Liu, WG ,Wei, J ,Cheng, JM ,&Li, WJ .(2014).Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau.CATENA,121,321-329. |
MLA | Liu, WG ,et al."Profile distribution of soil inorganic carbon along a chronosequence of grassland restoration on a 22-year scale in the Chinese Loess Plateau".CATENA 121(2014):321-329. |
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