Temporal and spatial changes in soil organic carbon and soil inorganic carbon stocks in the semi-arid area of northeast China
文献类型：期刊论文
| 作者 | Wang, Shuai; Zhuang, Qianlai; Zhou, Mingyi; Jin, Xinxin; Yu, Na; Yuan, Ting |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 146 |
| 关键词 | Soil organic carbon Soil inorganic carbon Digital soil mapping Boosted regression trees |
| ISSN号 | 1470-160X |
| DOI | 10.1016/j.ecolind.2022.109776 |
| 文献子类 | J |
| 英文摘要 | Soil organic carbon (SOC) and soil inorganic carbon (SIC) has important effects on soil physical, chemical and biological properties. They play an important role in coordinating the relationship between soil water and air, increasing soil water holding capacity and improving plant productivity. In this study, a boosted regression trees (BRT) model was developed to map the spatial distribution carbon stocks in the semi-arid region of Northeast China in 1990 and 2015. During the two periods, 10-fold cross-validation technology was used to test the performance and uncertainty of BRT model. In order to construct the model, 9 environmental variables (derived from climate, topography and biology) and 173 (1990) and 223 (2015) topsoil (0-30 cm) samples were used. The comparison between estimated and observed data shows that the RMSE of SOC and SIC stocks were 0.53 kgm(-2) and 0.19 kgm(-2) in 1990, and 0.65 kgm(-2) and 0.20 kgm(-2) in 2015, respectively. Elevation, normalized difference vegetation index, mean annual precipitation and Landsat band 3 were identifies as critical environmental factors for simulating the spatial distribution of SOC, accounting for 76.6 % and 70.3 % of the total relative importance in 1990 and 2015, respectively. Mean annual precipitation, mean annual temperature and topographic wetness index were the critical environmental factors for simulating the spatial variation of SIC during the two periods. Land use change also played an important role in the spatial variability of SOC and SIC stocks. In the past 25 years, soil carbon stocks decreased from 6.2 kg m(-2) in 1990 to 5.9 kg m(-2) in 2015. The spatial distribution pattern of SOC was high in northeastern area and low in southwestern area during the two periods, while the spatial distribution pattern of SIC was opposite to that of SOC stocks. The mapped soil carbon stock distribution is fundamental to future study of soil carbon cycle and regional carbon balance in semi-arid regions. |
| WOS关键词 | LAND-USE ; REGRESSION ; NITROGEN ; STORAGE ; CLIMATE ; VARIABLES ; FOREST |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:000900180200001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188664]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Agriculture Information Institute, CAAS 2.Chinese Academy of Agricultural Sciences 3.Purdue University West Lafayette Campus 4.Purdue University 5.Purdue University System 6.Research Center Julich 7.Helmholtz Association 8.Institute of Geographic Sciences & Natural Resources Research, CAS 9.Chinese Academy of Sciences 10.Shenyang Agricultural University |
| 推荐引用方式 GB/T 7714 | Wang, Shuai,Zhuang, Qianlai,Zhou, Mingyi,et al. Temporal and spatial changes in soil organic carbon and soil inorganic carbon stocks in the semi-arid area of northeast China[J]. ECOLOGICAL INDICATORS,2023,146. |
| APA | Wang, Shuai,Zhuang, Qianlai,Zhou, Mingyi,Jin, Xinxin,Yu, Na,&Yuan, Ting.(2023).Temporal and spatial changes in soil organic carbon and soil inorganic carbon stocks in the semi-arid area of northeast China.ECOLOGICAL INDICATORS,146. |
| MLA | Wang, Shuai,et al."Temporal and spatial changes in soil organic carbon and soil inorganic carbon stocks in the semi-arid area of northeast China".ECOLOGICAL INDICATORS 146(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。