publication . Article . Other literature type . 2010

Runoff generating processes in adjacent tussock grassland and pine plantation catchments as indicated by mean transit time estimation using tritium

M. K. Stewart; B. D. Fahey;
Open Access English
  • Published: 24 Jun 2010 Journal: Hydrology and Earth System Sciences (issn: 1027-5606, eissn: 1607-7938, Copyright policy)
  • Publisher: Copernicus Publications
Abstract
<jats:p>Abstract. The east Otago uplands of New Zealand's South Island have long been studied because of the environmental consequences of converting native tussock grasslands to other land covers, notably forestry and pasture for stock grazing. Early studies showed that afforestation substantially reduced annual water yield, stream peak flows, and 7-day low flows, mainly as a consequence of increased interception. Tritium measurements have indicated that surprisingly old water is present in catchments GH1 and GH2, and the small headwater wetland and catchment (GH5), and contributes strongly to baseflow. The data have been simulated assuming the presence of two ...
Subjects
free text keywords: Technology, T, Environmental technology. Sanitary engineering, TD1-1066, Geography. Anthropology. Recreation, G, Environmental sciences, GE1-350, Geology, Hydrology, Wetland, geography.geographical_feature_category, geography, Bedrock, Baseflow, Tussock, Aquifer, Surface runoff, Tussock grassland, Surface water
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publication . Article . Other literature type . 2010

Runoff generating processes in adjacent tussock grassland and pine plantation catchments as indicated by mean transit time estimation using tritium

M. K. Stewart; B. D. Fahey;