Effect of different management practices on vegetation development, losses of soluble matter and solar energy dissipation in three small sub-mountain catchments

0129279 - BU-J 20010521 RIV SIGLE NL eng C - Conference Paper (international conference)
Procházka, J. - Hakrová, P. - Pokorný, Jan - Pecharová, E. - Hezina, T. - Šíma, M. - Pechar, Libor
Effect of different management practices on vegetation development, losses of soluble matter and solar energy dissipation in three small sub-mountain catchments.
Transformations of Nutrients in Natural and Constructed Wetlands. Leiden: Backhuys Publishers, 2001 - (Vymazal, J.), s. 143-175. ISBN 90-5782-076-5.
[Nutrient cycling and retention in natural constructed wetlands /III./. Třeboň - hotel Peršlák (CZ), 14.09.1999-19.09.1999]
R&D Projects: GA ČR GA206/98/0727; GA MŠMT VS96072
Institutional research plan: CEZ:AV0Z6005908
Keywords : Base cation * landscape efficiency * management * matter losses
Subject RIV: DO - Wilderness Conservation

The concept of landscape efficiency based on matter losses and on solar energy dissipation was tested in three small catchments in Šumava mountains (Czech Republic) of very low population density(c. 2.5 inhabitant km-z). The three catchments were managed similarly till 1950s later on Mlýnský catchment (214 ha) was drained and used mostly for pasture, the rate forest/non-forest was kept 1 : 10. In the Horský catchment (202 ha), the forested area has increased from 24% in 1950s to 71% in 1999 and in Bukově catchment (264 ha) the area of non-forest decreased from 55% in 1950s to 5% in 1999. The highest matter losses expressed in terms of base cations were found from the drained Mlýnský catchment. Although the relatively small area of the three catchments studied the satellite images in the channels TM-5 (humidity)and TM-6 (temperature) reflect differences in the present managementpractices: the agricultural and drained Mlýnský catchment differs both from the next two catchments and from the reference area of the Danubecatchment of the Lipno dam area by its dry and warm surfaces.
Permanent Link: http://hdl.handle.net/11104/0027466