Skip to Main Content
Water yield following forest-grass-forest transitionsAuthor(s): Katherine J. Elliott; Peter V. Caldwell; Steven T. Brantley; Chelcy F. Miniat; James M. Vose; Wayne Swank
Source: Hydrology and Earth System Sciences
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
View PDF (3.0 MB)
Related Research Highlights
Water yield following forest to grass to forest transitions
DescriptionMany currently forested areas in the southern Appalachians were harvested in the early 1900s and cleared for agriculture or pasture, but have since been abandoned and reverted to forest (old-field succession). Land-use and land-cover changes such as these may have altered the timing and quantity of water yield (Q). We examined 80 years of streamflow and vegetation data in an experimental watershed that underwent forest–grass–forest conversion (i.e., oldfield succession treatment). We hypothesized that changes in forest species composition and water use would largely explain long-term changes in Q. Aboveground biomass was comparable among watersheds before the treatment (208.3Mgha1), and again after 45 years of forest regeneration (217.9Mgha1). However, management practices in the treatment watershed altered resulting species composition compared to the reference watershed. Evapotranspiration (ET) and Q in the treatment watershed recovered to pretreatment levels after 9 years of abandonment, then Q became less (averaging 5.4% less) and ET more (averaging 4.5% more) than expected after the 10th year up to the present day. We demonstrate that the decline in Q and corresponding increase in ET could be explained by the shift in major forest species from predominantly Quercus and Carya before treatment to predominantly Liriodendron and Acer through old-field succession. The annual change in Q can be attributed to changes in seasonal Q. The greatest management effect on monthly Q occurred during the wettest (i.e., above median Q) growing-season months, when Q was significantly lower than expected. In the dormant season, monthly Q was higher than expected during the wettest months.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- 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.
CitationElliott, Katherine J.; Caldwell, Peter V.; Brantley, Steven T.; Miniat, Chelcy F.; Vose, James M.; Swank, Wayne T. 2017. Water yield following forest-grass-forest transitions. Hydrology and Earth System Sciences, Vol. 21(2): 17 pages.: 981-997. DOI:10.5194/hess-21-981-2017
- Changes in vegetation structure and diversity after grass-to-forest succession in a Southern Appalachian watershed
- Valley Oak Seedling Growth Associated with Selected Grass Species
- Grass or fern competition reduce growth and survival of planted tree seedlings
XML: View XML