气候变化领域集成服务门户(CCPortal): Climate-Determined Changes of Organic Carbon Stocks in the Arable Chernozem of Kursk Region

CCPortal

DOI	10.1134/S2079096120020122
	Climate-Determined Changes of Organic Carbon Stocks in the Arable Chernozem of Kursk Region
	Sukhoveeva O.E.; Zolotukhin A.N.; Karelin D.V.
发表日期	2020
ISSN	20790961
起始页码	148
结束页码	155
卷号	10 期号:2
英文摘要	Abstract: Two biogeochemical simulation models describing carbon turnover in soil, the DeNitrification–DeComposition (DNDC) model and the Rothamsted Long-Term Field Experiment Carbon (RothC) model, have been parameterized in accordance with the conditions of arable leached chernozems of Kursk region and validated based on soil СО2 emission measurement data at Kursk Biosphere Station, Institute of Geography, Russian Academy of Sciences, as a case study on five crops: winter wheat, barley, corn, sunflower, and potato. The modeling has served to reconstruct dynamics of organic carbon content in soil (SOC) over the period of 1990–2018. The RothC model generated the region-specific characteristics of SOC losses, which primarily depend on the weather conditions at an average rate of 342 ± 54 kg С/ha year. The outcomes of the DNDC model are more crop-specific and demonstrate maximal SOC losses under corn (272 kg С/ha year) and maximal accumulation under winter wheat (266 kg С/ha year). The period was characterized by a steady increase in heat supply, including the annual average air temperature (0.68°С/10 years) and growing degree-days (224°С day/10 years). The coefficients of variation of the precipitation and moisture indices in the region exceed 20% over the period. The arable chernozems of Kursk region is characterized by moderate and strong positive correlations between the SOC dynamics and thermal environment conditions including growing degree-days, Selyaninov hydrothermal coefficient, Sapozhnikova moisture index. The contribution of warm-period precipitation is less significant. © 2020, Pleiades Publishing, Ltd.
英文关键词	agro-ecosystems; agroclimatic resources; emission of carbon dioxide; Land Degradation Neutrality; organic carbon balance; simulation modeling; statistical analysis
来源期刊	Arid Ecosystems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176658
作者单位	Institute of Geography, Russian Academy of Sciences, Moscow, 119017, Russian Federation; Kursk State University, Kursk, 305000, Russian Federation; Center for Forest Ecology and Productivity, Russian Academy of Sciences, Moscow, 117997, Russian Federation
推荐引用方式 GB/T 7714	Sukhoveeva O.E.,Zolotukhin A.N.,Karelin D.V.. Climate-Determined Changes of Organic Carbon Stocks in the Arable Chernozem of Kursk Region[J],2020,10(2).
APA	Sukhoveeva O.E.,Zolotukhin A.N.,&Karelin D.V..(2020).Climate-Determined Changes of Organic Carbon Stocks in the Arable Chernozem of Kursk Region.Arid Ecosystems,10(2).
MLA	Sukhoveeva O.E.,et al."Climate-Determined Changes of Organic Carbon Stocks in the Arable Chernozem of Kursk Region".Arid Ecosystems 10.2(2020).