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 (751KB bytes)

Title: Kriging Direct and Indirect Estimates of Sulfate Deposition: A Comparison

Author: Reams, Gregory A.; Huso, Manuela M.P.; Vong, Richard J.; McCollum, Joseph M.;

Date: 1997

Source: Res. Pap. SRS-7.Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 10 p.

Publication Series: Research Paper (RP)

Description: Due to logistical and cost constraints, acidic deposition is rarely measured at forest research or sampling locations. A crucial first step to assessing the effects of acid rain on forests is an accurate estimate of acidic deposition at forest sample sites. We examine two methods (direct and indirect) for estimating sulfate deposition at atmospherically unmonitored forest sites. The direct method only uses directly measured deposition data, while the indirect method additionally incorporates precipitation measurements from a spatially denser network of monitoring sites. Sulfate deposition values were estimated by point kriging using both the direct and indirect methods. By using the supplemental data from the precipitation monitoring network, estimates of sulfate deposition improved substantially, particularly at sitesthatare relatively isolated to the acid deposition monitoring network. Cross-validation procedures indicate that by using the indirect method, a reduction of approximately 20 to 25 percent in the predicted error sum of squares occurred.

Keywords: Acid deposition, geostatistics, interpolation, monitoring, variograms.

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.
  • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Reams, Gregory A.; Huso, Manuela M.P.; Vong, Richard J.; McCollum, Joseph M. 1997. Kriging Direct and Indirect Estimates of Sulfate Deposition: A Comparison. Res. Pap. SRS-7.Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 10 p.

 


 [ 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.