Soil moisture data for four sites from a study of the impact of woodland on water resources (TADPOLE project, Clipstone)

In 1996 concerns were raised, in the Environment Select Committee’s first report on water conservation and supply, that the government’s ambition to double woodland cover in England could significantly reduce water resources, particularly under predicted climate change. In 1997, the Department of Transport and the Regions funded a 2-year project (TADPOLE) involving Loughborough University, Newcastle University and Forest Research, to examine the effect of various forest types on different soil/geological combinations. The study assessed the water use and groundwater recharge of oak, Corsican pine, grass and heather on Triassic sandstone in Clipstone Forest, Nottinghamshire. The project was extended for a further 2.5 years in 1999 to resolve uncertainty over the water use of pine. This involved instrumenting a new pine site in July 2000 and clear felling the original pine site in October 2000. Subsequent monitoring continued to assess the extent of rewetting following tree clearance up to September 2006.
See also: Calder, I.R., Reid, I., Nisbet, T.R., Armstrong, A., Green, J.C. and Parkin, G. 2002. Study of the potential impacts on water resources of proposed afforestation. Trees and Drought Project on Lowland England – TaDPoLE. Loughborough University report to the Department for environment, food and rural affairs (Defra). Attribution statement: Forest Research must be acknowledged as the source of the data and DT&R as the funders of the research in any subsequent papers/products.

1996年，在环境选择委员会关于水资源保护和供应的第一份报告中，对政府旨在将英格兰林地覆盖率加倍的目标提出了担忧，认为这可能会显著减少水资源，尤其是在预测的气候变化影响下。1997年，运输部和地区部资助了一个为期两年的项目（TADPOLE），该项目涉及拉夫堡大学、纽卡斯尔大学和森林研究机构，旨在研究不同森林类型对各种土壤/地质组合的影响。该研究评估了在诺丁汉郡克利普斯通森林的侏罗纪砂岩上橡树、科西嘉松树、草地和石南的水分利用和地下水补给情况。1999年，鉴于对松树水分利用的不确定性，该项目延长了2.5年。这包括在2000年7月对新的松树站点进行仪器安装，以及在2000年10月对原始松树站点进行砍伐。随后的监测继续评估树木砍伐后重新湿润的程度，直至2006年9月。

参见：Calder, I.R., Reid, I., Nisbet, T.R., Armstrong, A., Green, J.C. and Parkin, G. 2002. 研究提议造林对水资源潜在影响。英格兰低地树木与干旱项目——TaDPoLE。拉夫堡大学向环境、食品和农村事务部（Defra）的报告。归属声明：在后续的论文/产品中，必须承认森林研究为数据来源，DT&R为研究资助方。