Long-term soil warming and Carbon Cycle Feedbacks to the Climate System

doi:10.2172/1129843

GSTDTAP > 地球科学

DOI	10.2172/1129843
报告编号	DOE-MBL-5421
来源ID	OSTI ID: 1129843
	Long-term soil warming and Carbon Cycle Feedbacks to the Climate System
	Melillo, Jerry M.
	2014-04-30
出版年	2014
语种	英语
国家	美国
领域	地球科学
英文摘要	The primary objective of the proposed research was to quantify and explain the effects of a sustained in situ 5oC soil temperature increase on net carbon (C) storage in a northeastern deciduous forest ecosystem. The research was done at an established soil warming experiment at the Harvard Forest in central Massachusetts â Barre Woods site established in 2001. In the field, a series of plant and soil measurements were made to quantify changes in C storage in the ecosystem and to provide insights into the possible relationships between C-storage changes and nitrogen (N) cycling changes in the warmed plots. Field measurements included: 1) annual woody increment; 2) litterfall; 3) carbon dioxide (CO2) efflux from the soil surface; 4) root biomass and respiration; 5) microbial biomass; and 6) net N mineralization and net nitrification rates. This research was designed to increase our understanding of how global warming will affect the capacity of temperate forest ecosystems to store C. The work explored how soil warming changes the interactions between the C and N cycles, and how these changes affect land-atmosphere feedbacks. This core research question framed the project â What are the effects of a sustained in situ 5oC soil temperature increase on net carbon (C) storage in a northeastern deciduous forest ecosystem? A second critical question was addressed in this research â What are the effects of a sustained in situ 5{degrees}C soil temperature increase on nitrogen (N) cycling in a northeastern deciduous forest ecosystem?
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6609
专题	地球科学
推荐引用方式 GB/T 7714	Melillo, Jerry M.. Long-term soil warming and Carbon Cycle Feedbacks to the Climate System,2014.