Predicting soil erosion and deposition effects on plant establishment: A key to increasing restoration success

TitlePredicting soil erosion and deposition effects on plant establishment: A key to increasing restoration success
Publication TypeConference Proceedings
Year of Publication2008
AuthorsHerrick JE, Peters DC, Bestelmeyer BT, Okin GS, Hansen N.K., Havstad K
Conference NameXXI International Grassland Congress; VII International Rangeland Congress
Volume1
Pagination743
Date Published06/2007
ARIS Log Number228912
Keywordsland degradation, proceedings, restoration, seedling establishment, soil erosion
Abstract

Soil erosion and deposition can result in significant modification of the soil profile, including changes in soil surface texture and structure. A series of field studies and modeling exercises are currently being completed at the USDA-ARS Jornada Experimental Range, located in the northern Chihuahuan Desert in south-central New Mexico, USA to examine the effects of soil erosion and deposition on plant establishment. As predicted, model results showed that sand addition to the soil surface affected establishment differently depending on the amount of sand added and the initial soil texture. Field studies of areas where sand deposition has been occurring during past several decades indicate that plant community dynamics are controlled by a number of different factors in addition to sand deposition, and that feedbacks with the plant community itself are likely to be important. We conclude that careful characterization of site conditions and soil profile characteristics should be completed before restoration. At a minimum, changes in soil water characteristics should be predicted using texture relationships. In some cases, restoration treatments can be designed to improve water holding capacity by promoting soil deposition.

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