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Kalimantan Forests and Climate Partnership (KFCP) Design ...

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ο The efficacy of canal blocking <strong>and</strong> planning the restoration of peatl<strong>and</strong>s requires a<br />

clear underst<strong>and</strong>ing of how water moves through peat:<br />

• Where does the water come from?<br />

• How fast does it move through the peat dome?<br />

• What influences the movement of water through the peat <strong>and</strong> peat domes?<br />

Gravity? Hydraulic forces? Capillary action?<br />

ο Water table movements:<br />

• There are a number of records of the water table height. The method for<br />

obtaining that data requires validation <strong>and</strong> is not clear;<br />

• The ‗natural‘ variation of water tables in undisturbed peatl<strong>and</strong> <strong>and</strong> in peatl<strong>and</strong><br />

under various types of management does not appear to be identified;<br />

• The response of water tables to actions such as canal blocking <strong>and</strong> replanting<br />

has been recorded but the patterns are not clear, the influences on the water<br />

table may vary depending on:<br />

Peat characteristics;<br />

Canal size;<br />

Type of dam for blocking;<br />

Water flow in the canal;<br />

Hydrology of peat;<br />

Peat dome shape <strong>and</strong> height;<br />

• The influence of replanting trees on water tables;<br />

2. Canal blocking:<br />

ο Observations in the field <strong>and</strong> the data on water tables do not paint a clear picture of<br />

the effectiveness of canal blocking in re-flooding <strong>and</strong> restoration of peatl<strong>and</strong>s;<br />

ο Discussion with some wetl<strong>and</strong> <strong>and</strong> hydrology specialists <strong>and</strong> the University suggest<br />

that the effectiveness of dams blocking canals is not clear <strong>and</strong> needs to be confirmed;<br />

<strong>and</strong><br />

ο It may be that the apparent variation in performance of canal blocking is due to the<br />

varying characteristics of peat among <strong>and</strong> between the locations.<br />

KALIMANTAN FORESTS AND CLIMATE PARTNERSHIP (<strong>KFCP</strong>) DESIGN DOCUMENT 6-5

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