Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14328 |
Temporal response of soil organic carbon after grassland-related land-use change | |
Li, Wei1; Ciais, Philippe1; Guenet, Bertrand1; Peng, Shushi2; Chang, Jinfeng1; Chaplot, Vincent3; Khudyaev, Sergey4; Peregon, Anna1,4; Piao, Shilong2; Wang, Yilong; Yue, Chao | |
2018-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:10页码:4731-4746 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Peoples R China; Russia |
英文摘要 | The net flux of CO2 exchanged with the atmosphere following grassland-related land-use change (LUC) depends on the subsequent temporal dynamics of soil organic carbon (SOC). Yet, the magnitude and timing of these dynamics are still unclear. We compiled a global data set of 836 paired-sites to quantify temporal SOC changes after grassland-related LUC. In order to discriminate between SOC losses from the initial ecosystem and gains from the secondary one, the post-LUC time series of SOC data was combined with satellite-based net primary production observations as a proxy of carbon input to the soil. Globally, land conversion from either cropland or forest into grassland leads to SOC accumulation; the reverse shows net SOC loss. The SOC response curves vary between different regions. Conversion of cropland to managed grassland results in more SOC accumulation than natural grassland recovery from abandoned cropland. We did not consider the biophysical variables (e.g., climate conditions and soil properties) when fitting the SOC turnover rate into the observation data but analyzed the relationships between the fitted turnover rate and these variables. The SOC turnover rate is significantly correlated with temperature and precipitation (p<0.05), but not with the clay fraction of soils (p>0.05). Comparing our results with predictions from bookkeeping models, we found that bookkeeping models overestimate by 56% of the long-term (100years horizon) cumulative SOC emissions for grassland-related LUC types in tropical and temperate regions since 2000. We also tested the spatial representativeness of our data set and calculated SOC response curves using the representative subset of sites in each region. Our study provides new insight into the impact grassland-related LUC on the global carbon budget and sheds light on the potential of grassland conservation for climate mitigation. |
英文关键词 | land-use and land-cover change NPP soil carbon response curve soil organic carbon temporal change |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445728800022 |
WOS关键词 | NET PRIMARY PRODUCTION ; TERRESTRIAL ECOSYSTEMS ; LITTER DECOMPOSITION ; HUMAN APPROPRIATION ; AGRICULTURAL LAND ; VEGETATION MODEL ; BOREAL FORESTS ; CLIMATE-CHANGE ; COVER CHANGE ; NITROGEN |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16833 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Paris Saclay, UVSQ, CEA, CNRS,LSCE IPSL,Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France; 2.Peking Univ, Coll Urban & Environm Sci, Sinofrench Inst Earth Syst Sci, Beijing, Peoples R China; 3.IRD, Lab Oceanog & Climat Experimentat & Approches Num, UMR 7159, Paris, France; 4.SB RAS, Inst Soil Sci & Agrochem, Novosibirsk, Russia |
推荐引用方式 GB/T 7714 | Li, Wei,Ciais, Philippe,Guenet, Bertrand,et al. Temporal response of soil organic carbon after grassland-related land-use change[J]. GLOBAL CHANGE BIOLOGY,2018,24(10):4731-4746. |
APA | Li, Wei.,Ciais, Philippe.,Guenet, Bertrand.,Peng, Shushi.,Chang, Jinfeng.,...&Yue, Chao.(2018).Temporal response of soil organic carbon after grassland-related land-use change.GLOBAL CHANGE BIOLOGY,24(10),4731-4746. |
MLA | Li, Wei,et al."Temporal response of soil organic carbon after grassland-related land-use change".GLOBAL CHANGE BIOLOGY 24.10(2018):4731-4746. |
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