Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (688 KB)

Title: Response of ecosystem carbon fluxes to drought events in a poplar plantation in Northern China

Author: Zhou, Jie; Zhang, Zhiqiang; Sun, Ge; Fang, Xianrui; Zha, Tonggang; McNulty, Steve; Chen, Jiquan; Jin, Ying; Noormets, Asko;

Date: 2013

Source: Forest Ecology and Management 300:33–42

Publication Series: Scientific Journal (JRNL)

Description: Poplar plantations are widely used for timber production and ecological restoration in northern China,a region that experiences frequent droughts and water scarcity. An open-path eddy-covariance (EC)system was used to continuously measure the carbon,water,and energy fluxes in a poplar plantation during the growing season (i.e., April–October)over the period 2006–2008 in the Daxing District of Beijing,China. We examined the seasonal and inter-annual variability of gross ecosystem productivity (GEP), net ecosystem exchange (NEE), and ecosystem respiration (ER). Although annual total precipitation was the lowest in 2006,natural rainfall was amended by flood irrigation. In contrast, no supplementary water was provided during a severe drought in spring (i.e.,April–June),2007, resulting in a significant reduction in net ecosystem production (NEP = NEE). This resulted from the combined effects of larger decrease in GEP than that in ER. Despite the drought–induced reduction in NEP, the plantation forest was a strong carbon sink accumulating 591± 62, 641 ± 71, and 929 ± 75 g C m -2 year-1 for 2006, 2007,and 2008, respectively. The timing of the drought significantly affected the annual GEP. Severe drought during canopy development induced a lasting reduction in carbon exchange throughout the growing season, while the severe drought at the end of growing season did not significantly reduce carbon uptake. Additionally, irrigation reduced negative drought impacts on carbon sequestration. Overall, this fast growing poplar plantation is a strong carbon sink and is sensitive to the changes in environmental conditions.

Keywords: Poplar plantation, Gross ecosystem productivity, Ecosystem respiration, Net ecosystem productivity, Drought

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Zhou, Jie; Zhang, Zhiqiang; Sun, Ge; Fang, Xianrui; Zha, Tonggang; McNulty, Steve; Chen, Jiquan; Jin, Ying; Noormets, Asko 2013. Response of ecosystem carbon fluxes to drought events in a poplar plantation in Northern China. Forest Ecology and Management 300:33–42.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.