Soil organic carbon dynamics jointly controlled by climate, carbon inputs, soil properties and soil carbon fractions

文献类型： 外文期刊

第一作者： Luo, Zhongkui

作者： Luo, Zhongkui;Wang, Enli;Feng, Wenting;Luo, Yiqi;Baldock, Jeff

作者机构：

关键词： agricultural soil;carbon sequestration;measured carbon fractions;physical protection;soil geochemistry;soil organic carbon

期刊名称：GLOBAL CHANGE BIOLOGY （ 影响因子：10.863； 五年影响因子：11.716 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Soil organic carbon (SOC) dynamics are regulated by the complex interplay of climatic, edaphic and biotic conditions. However, the interrelation of SOC and these drivers and their potential connection networks are rarely assessed quantitatively. Using observations of SOC dynamics with detailed soil properties from 90 field trials at 28 sites under different agroecosystems across the Australian cropping regions, we investigated the direct and indirect effects of climate, soil properties, carbon (C) inputs and soil C pools (a total of 17 variables) on SOC change rate (r(C), Mg C ha(-1) yr(-1)). Among these variables, we found that the most influential variables on r(C) were the average C input amount and annual precipitation, and the total SOC stock at the beginning of the trials. Overall, C inputs (including C input amount and pasture frequency in the crop rotation system) accounted for 27% of the relative influence on r(C), followed by climate 25% (including precipitation and temperature), soil C pools 24% (including pool size and composition) and soil properties (such as cation exchange capacity, clay content, bulk density) 24%. Path analysis identified a network of intercorrelations of climate, soil properties, C inputs and soil C pools in determining r(C). The direct correlation of r(C) with climate was significantly weakened if removing the effects of soil properties and C pools, and vice versa. These results reveal the relative importance of climate, soil properties, C inputs and C pools and their complex interconnections in regulating SOC dynamics. Ignorance of the impact of changes in soil properties, C pool composition and C input (quantity and quality) on SOC dynamics is likely one of the main sources of uncertainty in SOC predictions from the process-based SOC models.

分类号： Q94

  • 相关文献

[1]Characteristics of differently stabilised soil organic carbon fractions in relation to long-term fertilisation in Brown Earth of Northeast China. Xu, Xiangru,An, Tingting,Pei, Jiubo,Wang, Jingkuan,Xu, Xiangru,Zhang, Wenju,Xu, Minggang,Xiao, Jing,Xie, Hongtu. 2016

[2]Modeling the Impacts of Soil Organic Carbon Content of Croplands on Crop Yields in China. Qiu Jian-jun,Wang Li-gang,Li Hu,Tang Hua-jun,Li Chang-sheng,Van Ranst, Eric. 2009

[3]A one-year short-term biochar application improved carbon accumulation in large macroaggregate fractions. Zhang, Qingzhong,Du, ZhangLiu,Lou, Yilai,He, Xinhua.

[4]Biochar addition drives soil aggregation and carbon sequestration in aggregate fractions from an intensive agricultural system. Du, Zhang-Liu,Zhao, Jian-Kun,Wang, Yi-Ding,Zhang, Qing-Zhong.

[5]Sensitivity of soil respiration to soil temperature decreased under deep biochar amended soils in temperate croplands. He, Xinhua,He, Xinhua,Du, Zhangliu,Wang, Yiding,Lu, Ning,Zhang, Qingzhong.

[6]Long-term fertilization effects on organic carbon fractions in a red soil of China. Tong, Xiaogang,Xu, Minggang,Wang, Xiujun,Zhang, Wenju,Cong, Rihuan,Tong, Xiaogang,Wang, Xiujun,Cong, Rihuan,Bhattacharyya, Ranjan. 2014

[7]Soil organic carbon fractions and management index after 20 yr of manure and fertilizer application for greenhouse vegetables. Lou, Y.,Xu, M.,Wang, W.,Sun, X.,Liang, C..

[8]Differences in fertilization impacts on organic carbon content and stability in a paddy and an upland soil in subtropical China. Sun, Yanni,Huang, Shan,Yu, Xichu,Zhang, Weijian.

[9]Crop yield and soil organic matter after long-term straw return to soil in China. Wang, Jinzhou,Xu, Minggang,Zhang, Wenju,Lu, Chang'ai,Wang, Jinzhou,Feng, Gu,Wang, Jinzhou,Wang, Xiujun,Wang, Xiujun.

[10]Soil organic carbon of an intensively reclaimed region in China: Current status and carbon sequestration potential. Deng, Xunfei,Ma, Wanzhu,Ren, Zhouqiao,Chen, Xiaojia,Long, Wenli,Zhu, Zhenling,Lv, Xiaonan,Zhan, Yu,Zhan, Yu,Wang, Fei,Qin, Fangjin,Zhu, Zhenling.

[11]Carbon sequestration in a nectarine orchard as affected by green manure in China. Wang, Y. X.,Weng, B. Q.,Ye, J.,Zhong, Z. M.,Huang, Y. B..

[12]Storage and spatial patterns of organic carbon of soil profiles in Guangdong Province, China. Zhang, Huihua,Chen, Junjian,Wu, Zhifeng,Li, Dingqiang,Wu, Zhifeng,Zhu, Li.

[13]Pollution assessment, distribution and sources of PAHs in agricultural soils of Pearl River Delta - The biggest manufacturing base in China. Li, Yongtao,Li, Fangbai,Zhang, Tianbin,Yang, Guoyi,Chen, Junjian,Wan, Hongfu. 2007

[14]IMPACTS OF WASTEWATER IRRIGATION ON THE DISTRIBUTION OF HEAVY METALS IN AGRICULTURAL SOILS: A CASE STUDY IN FANGSHAN, BEIJING. Han, Ping,Li, Cheng,Feng, Xiao-yuan,Ma, Zhi-hong,Lu, An-xiang,Pan, Li-gang,Wang, Ji-hua,Han, Ping.

[15]Application of 16S rDNA-PCR amplification and DGGE fingerprinting for detection of shift in microbial community diversity in Cu-, Zn-, and Cd-contaminated paddy soils. Li, ZJ,Xu, JM,Tang, CX,Wu, JJ,Muhammad, A,Wang, HZ.

[16]Environment Quality Evaluation of Heavy Metals in agricultural soils of Shilou town in Fangshan district of Beijing. Han, Ping,Feng, Xiaoyuan,Wang, Jihua. 2014

[17]Multivariate and geostatistical analyses of the spatial distribution and origin of heavy metals in the agricultural soils in Shunyi, Beijing, China. Lu, Anxiang,Zhang, Shuzhen,Lu, Anxiang,Wang, Jihua,Han, Ping,Qin, Xiangyang,Wang, Kaiyi.

[18]Driving forces of heavy metal changes in agricultural soils in a typical manufacturing center. Qiu, Menglong,Liu, Liming,Li, Fangbai,Wang, Qi,Chen, Junjian,Yang, Guoyi.

[19]Using ensemble models to identify and apportion heavy metal pollution sources in agricultural soils on a local scale. Wang, Qi,Li, Fangbai,Xie, Zhiyi.

[20]Impact of woodchip biochar amendment on the sorption and dissipation of pesticide acetamiprid in agricultural soils. Yu, Xiang-Yang,Mu, Chang-Li,Liu, Xian-Jin,Gu, Cheng,Liu, Cun.

作者其他论文 更多>>

微信小程序