Regional simulation of soil organic carbon dynamics for dry farmland in Northeast China using the CENTURY model.
Regional simulation of soil organic carbon dynamics for dry farmland in Northeast China using the CENTURY model.
复制标题
利用CENTURY模型对东北旱地土壤有机碳动态进行区域模拟
DOI：
10.1371/journal.pone.0245040
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Liu X
中科院分区：
文献类型：
--
作者：
Zhang F;Wang S;Zhao M;Qin F;Liu X
土壤有机碳含量对土壤肥力和粮食产量有着重要影响，是影响农业生产和粮食安全的重要因素。旱地是我国主要的农田类型，土壤有机碳含量低于水稻土，具有显著的固碳潜力。因此，本研究应用世纪模型对吉林省1985 - 2015年土壤有机碳的时空变化进行了研究。旱地土壤多边形提取土壤和土地利用层（在1：1，000，000比例）。空间叠置分析也被用来提取1282个土壤多边形从旱地。模拟结果的SOC动态在旱地，与玉树实地验证网站，表明了良好的性能水平。从1985年到2015年，旱地土壤有机碳密度（SOCD）总体上从34.36 Mg C ha−1下降到33.50 Mg C ha−1，每年退化率为0.03 Mg C ha−1。此外，有机碳损失为4.89 Tg从干燥的农田土壤在该省，与0.16 Tg C每年的恶化率。35.96%的旱地SOCD增加，64.04%的旱地释放了碳。此外，SOC动态记录不同土壤组之间的显着差异。世纪模型与土壤数据库耦合的方法可以在区域尺度上模拟土壤有机碳的时空变化，可以作为旱地土壤有机碳动态的精确模拟方法。
Soil organic carbon content has a significant impact on soil fertility and grain yield, making it an important factor affecting agricultural production and food security. Dry farmland, the main type of cropland in China, has a lower soil organic carbon content than that of paddy soil, and it may have a significant carbon sequestration potential. Therefore, in this study we applied the CENTURY model to explore the temporal and spatial changes of soil organic carbon (SOC) in Jilin Province from 1985 to 2015. Dry farmland soil polygons were extracted from soil and land use layers (at the 1:1,000,000 scale). Spatial overlay analysis was also used to extract 1282 soil polygons from dry farmland. Modelled results for SOC dynamics in the dry farmland, in conjunction with those from the Yushu field-validation site, indicated a good level of performance. From 1985 to 2015, soil organic carbon density (SOCD) of dry farmland decreased from 34.36 Mg C ha−1 to 33.50 Mg C ha−1 in general, having a rate of deterioration of 0.03 Mg C ha−1 per year. Also, SOC loss was 4.89 Tg from dry farmland soils in the province, with a deterioration rate of 0.16 Tg C per year. 35.96% of the dry farmland its SOCD increased but 64.04% of the area released carbon. Moreover, SOC dynamics recorded significant differences between different soil groups. The method of coupling the CENTURY model with a detailed soil database can simulate temporal and spatial variations of SOC at a regional scale, and it can be used as a precise simulation method for dry farmland SOC dynamics.
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影响因子：
6.6
作者：
Lufafa, A.;Bolte, J.;Noller, J. S.
通讯作者：
Noller, J. S.
影响因子：
4
作者：
PARTON, WJ;STEWART, JWB;COLE, CV
通讯作者：
COLE, CV
影响因子：
6.5
作者：
Tornquist, Carlos Gustavo;Mielniczuk, Joao;Pellegrino Cerri, Carlos Eduardo
通讯作者：
Pellegrino Cerri, Carlos Eduardo
影响因子：
2.9
作者：
Galdos, M. V.;Cerri, C. C.;Van Antwerpen, R.
通讯作者：
Van Antwerpen, R.
DOI：
10.2136/sssaj1992.03615995005600020023x
发表时间：
1992-03-01
影响因子：
2.9
作者：
PAUSTIAN, K;PARTON, WJ;PERSSON, J
通讯作者：
PERSSON, J