How much soil organic carbon sequestration is due to conservation agriculture reducing soil erosion?

文献类型： 外文期刊

第一作者： Li, Yong

作者： Li, Yong;Yu, Hanqing;Zhou, Na;Chappell, Adrian;Funk, Roger

作者机构：

关键词： beryllium-7 (Be-7);conservation agriculture;land use and management activity;minimum tillage;SOC loss;soil C sequestration;wind erosion

期刊名称：SOIL RESEARCH （ 影响因子：1.987； 五年影响因子：2.47 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Soil organic carbon (SOC) redistribution by soil erosion is fundamental to the C cycle and is a key component of global soil C accounting. Widespread conversion of cropland to forest and grassland and the adoption of conservation agriculture (minimum-till and no-till practices) worldwide and particularly in China since 2000, may have reduced wind erosion and increased SOC storage and 'avoided' CO2 emission. However, few SOC sequestration studies have separated changes in SOC stock caused by changes in land-use and management activity from net SOC redistribution due to reduced SOC erosion and SOC dust accumulation, particularly from individual or short-term (months) wind erosion events. We used measurements of SOC and the short-lived natural radionuclide beryllium-7 (Be-7, half-life 53.3 days) to estimate net SOC redistribution for changes in several land-use and management practices in Fengning County in North China. Compared with conventional tillage (CT), conservation grassland (CG) and minimum tillage (CL) showed enhanced SOC stocks (0-245 mm depth) of similar to 0.8 +/- 0.03 and 2.0 +/- 0.06 t C ha(-1) year(-1) as a consequence of their land-use conversion for 5 and 3 years, respectively. However, SOC erosion on CG (0.46 +/- 0.04 t C ha(-1) year(-1)) and CL (0.52 +/- 0.04 t C ha(-1) year(-1)) plots was 54% and 47%, respectively, less than on CT (0.99 +/- 0.11 t C ha(-1) year(-1)). Net C sequestration (0-245 mm), considering SOC redistribution for CG (0.27 +/- 0.12 t C ha(-1) year(-1); 5 years) and CL (1.53 +/- 0.13 t C ha(-1) year(-1); 3 years), revealed an overestimate of 196% and 31% without considering SOC redistribution (CG, 0.8 +/- 0.03 t C ha(-1) year(-1); CL, 2.0 +/- 0.06 t C ha(-1) year(-1)), respectively, relative to CT. Reduced SOC erosion and/or SOC dust accumulation by vegetation-crop cover must be included when considering SOC sequestration induced by changes in land use and management.

分类号： S1

  • 相关文献

[1]Effects of tillage options on soil physical properties and cassava-dry-matter partitioning. Figueiredo, Priscila Gonzales,Bicudo, Silvio Jose,Tanamati, Fabio Yomei,Figueiredo, Priscila Gonzales,Bicudo, Silvio Jose,Tanamati, Fabio Yomei,Chen, Songbi,Fernandes, Adalton Mazetti,Djabou-Fondjo, Astride Stephanie Mouafi.

[2]Thoughts on developing small/medium size no-till equipment for conservation agriculture in Asia: Summary of post-publication peer review comments. Jin, He,Li Hongwen,Zhang Zhiqiang,Wang Qingjie,Wang Yingkuan. 2014

[3]Permanent raised beds improved crop performance and water use on the North China Plain. He, J.,Li, H.,Wang, Q.,Li, W.,Zhang, Y.,McHugh, A. D.,Lu, Z..

[4]Band tillage with fertilizer application for unpuddled transplanting rice in northeast of China. Sarker, Khokan Kumer,Xu Chunlin,Sarker, Khokan Kumer,Wang Xiaoyan,Sarker, Khokan Kumer,Li Minjin,Li Lianhao,Liu Guiming. 2016

[5]Effect of eco-grass planting on soil and water conservation on the bare slope of mountainous area in Beijing. Sun Tiejun,Baderihu. 2012

[6]Primary factors influencing wind erosion of farmland in Wuchuan County, Inner Mongolia, China. He Wenqing,Yan Changrong,Zhao Caixia,Gao Wangsheng. 2007

[7]Effect of grazing on wind driven carbon and nitrogen ratios in the grasslands of Inner Mongolia. Hoffmann, Carsten,Funk, Roger,Sommer, Michael,Li, Yong.

[8]Quantitative effects of wind erosion on the soil texture and soil nutrients under different vegetation coverage in a semiarid steppe of northern China. Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Ruirui,Chen, Baorui,Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Ruirui,Chen, Baorui,Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Ruirui,Chen, Baorui,Xu, Xingliang.

[9]Using Cs-137 to estimate wind erosion and dust deposition on grassland in Inner Mongolia-selection of a reference site and description of the temporal variability. Funk, Roger,Hoffmann, Carsten,Reiche, Matthias,Zhang, Zhuodong,Sommer, Michael,Li, Yong,Zhang, Zhuodong,Li, Junjie,Sommer, Michael.

[10]Identifying sensitive areas to wind erosion in the Xilingele grassland by computational fluid dynamics modelling. Zhang, Zhuodong,Reiche, Matthias,Funk, Roger,Hoffmann, Carsten,Sommer, Michael,Wieland, Ralf,Li, Yong,Sommer, Michael.

[11]Estimation of Sand Transportation Rate for Fixed and Semi-Fixed Dunes Using Meteorological Wind Data. Hu Xia,Liu Lian-You,Liu Mu-Xing,Hu Xia,Liu Lian-You,Liu Mu-Xing,Hu Xia,Li Shun-Jiang,Xiao Bi-Lin.

[12]Application of satellite remote sensing for mapping wind erosion risk and dust emission-deposition in Inner Mongolia grassland, China. Reiche, Matthias,Funk, Roger,Zhang, Zhuodong,Hoffmann, Carsten,Wehrhan, Marc,Sommer, Michael,Zhang, Zhuodong,Li, Yong,Reiche, Johannes,Sommer, Michael. 2012

[13]Wind modelling for wind erosion research by open source computational fluid dynamics. Zhang, Zhuodong,Reiche, Matthias,Funk, Roger,Hoffmann, Carsten,Sommer, Michael,Wieland, Ralf,Li, Yong,Sommer, Michael.

[14]Effects of grazing and topography on dust flux and deposition in the Xilingele grassland, Inner Mongolia. Hoffmann, C.,Funk, R.,Sommer, M.,Wieland, R.,Li, Y..

[15]How rain-formed soil crust affects wind erosion in a semi-arid steppe in northern China. Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Wu, Lianhai.

[16]Dust storm erosion and its impact on soil carbon and nitrogen losses in northern China. Wang, XB,Enema, O,Hoogmed, WB,Perdok, UD,Cai, DX. 2006

[17]A computational fluid dynamics model for wind simulation: model implementation and experimental validation. Zhang, Zhuo-dong,Reiche, Matthias,Funk, Roger,Hoffmann, Carsten,Sommer, Michael,Wieland, Ralf,Li, Yong,Sommer, Michael. 2012

作者其他论文 更多>>

微信小程序