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The effect of broadleaved woodland on Chalk groundwater resources

J. Roberts and P. Rosier
The effect of broadleaved woodland on Chalk groundwater resources
Quarterly Journal of Engineering Geology and Hydrogeology (May 2006) 39 (2): 197-207


The impact of broadleaved woodland on chalk groundwater resources, in Hampshire, UK, was assessed with a comparative study of beech woodland at Black Wood near Micheldever and grass at Bridgets Farm near Winchester. At both sites, parallel estimates of evaporation and detailed studies of the changes in soil water content and the direction of water movement were made. Beneath both sites, a reduction in soil water content was observed during the summer to a depth of 6 m. However, total water potential measurements showed that upward movement of water was only occurring in the upper 2 m of the profile, whilst drainage was occurring below this point. Drainage continued even when soil moisture deficits existed in the upper part of the profile. Seasonal differences between woodland and grass do exist, however annual differences in evaporation and drainage are insignificant. The similarity of evaporation from and drainage below the broadleaved woodland and grass sites contrasts markedly with several other studies that show greater drying below woodland. Unlike other comparisons, this study was made within a large block of woodland and both sites were on chalk. The relevance of woodland size and chalk substrate are discussed.

ISSN: 1470-9236
EISSN: 2041-4803
Coden: QJEGA7
Serial Title: Quarterly Journal of Engineering Geology and Hydrogeology
Serial Volume: 39
Serial Issue: 2
Title: The effect of broadleaved woodland on Chalk groundwater resources
Affiliation: CEH-Wallingford, Wallingford, United Kingdom
Pages: 197-207
Published: 200605
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 27
Accession Number: 2006-051780
Categories: Hydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N51°04'60" - N51°04'60", W01°19'00" - W01°19'00"
N51°07'60" - N51°07'60", W01°13'60" - W01°13'60"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200628
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