Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by ROBERTS, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by ROBERTS, J.
Agricola
Right arrow Articles by ROBERTS, J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 1977 Oxford University Press

RESEARCH-ARTICLE

The Use of Tree-cutting Techniques in the Study of the Water Relations of Mature Pinus sylvestris L.

I. THE TECHNIQUE AND SURVEY OF THE RESULTS

JOHN ROBERTS

Imperial College Field Station, Silwood, Park, Sunninghill, Ascot, Berkshire, U.K. and the Institute, of Hydrology Maclean Building, Crowmarsh Gifford, Wallingford, Oxon, U.K. OX10 8BB

This paper gives a description of ‘tree cutting’ under water in an attempt to understand some of the basic problems concerning the water relations of trees. A large resistance in the soil-root system is confirmed. The effect of changes in leaf water potential on cutting (which is essentially a change in turgor potential) is shown to affect stomatal resistance (rs) and thus transpiration depending on environmental conditions. Water uptake rates and evaporation estimates compare well at low rates. The correspondence is less good at higher rates and this is thought to be due to rs of cut trees being less limited under conditions of high evaporative demand.

Transpiration was found to be negligible during rainfall. The radial changes occurring diurnally in control trees are markedly modified in cut trees presumably because of the removal of the root-soil resistance.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.