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  • 1
    Language: English
    In: Forest Ecology and Management, 2009, Vol.258(10), pp.2163-2174
    Description: Knowledge of site-specific water conditions is important in forestland evaluation and fundamental for a sustainable forest management. In Central Europe, traditional site mapping has followed an integrated ecological approach. The assessment of soil water availability is based on overlaying relief and descriptive soil information. It is a relative system referring to an (hypothetical) equilibrium between relief-dependent soil conditions and the potential natural forest association at a given regional climate. Accordingly, the climatic settings are supposed to be constant and are mostly based on long-term means of precipitation and air temperature. However, long-term climate changes, as well as infrequent climatic extremes have not been considered adequately. Furthermore, the feedback of forest management itself on available soil water cannot be addressed. To overcome these shortcomings, we developed an approach in which the soil hydrological model LWF-BROOK90 is organized in a GIS-frame to simulate the daily water fluxes and soil moisture status. Spatially distributed meteorological input data is generated from long-term station data using special regionalization procedures. Model parameterization for soil physical properties by horizon are derived from detailed forest soil maps using pedotransfer functions. Thus, we obtained data on all components of the water balance depending on climate, aspect, slope, vertical soil properties, and stand conditions in a spatial resolution of 25 m × 25 m. In addition to the common output of site water balance models, additional indicators were implemented to enable the quantification of ‘transpiration stress’, ‘soil drought stress’, and ‘excess soil water stress’. Soil water evaluation is based on the number of days exceeding defined thresholds of parameter values. The implemented soil water indices were suitable to reflect relevant differences in the soil water conditions between sites whereas focusing on individual and extreme years rather than on long-term averages seems to be more appropriate for assessing water-related tree growth conditions. The next step will be to produce forest site maps based on such ‘stress’ indicators. The novel approach provides a more objective description of variable soil water conditions than the currently used mapping approach. Furthermore, it makes spatial hydrological data (e.g. groundwater recharge) available for use beyond forest management.
    Keywords: Forest Site Mapping ; Forest Site Evaluation ; Forest Climatology ; Soil Water Modelling ; Eco-Hydrology ; Hydropedology ; Forestry ; Biology
    ISSN: 0378-1127
    E-ISSN: 1872-7042
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  • 2
    Language: English
    In: Forest Ecology and Management, 2000, Vol.132(1), pp.111-119
    Description: European Forest Ecosystem Research Network (EFERN), was set up in 1996 as one result of the Ministerial Conferences on the Protection of European Forests in Strasbourg 1990 and Helsinki 1993 with the aim of promoting ecological research for sustainable forest management. Three plenary meetings were held, each with a specific theme. The results of these meetings have been documented in 10 chapters in a volume with the title 'Pathways to the wise use of forests in Europe'. The intention was also to give priorities for future forest ecosystem research. In accepting the idea that sustainability includes a multifunctional view of forests, there is a need to find ways of integrating classical forest ecosystem research with biodiversity, water quality and socio-economics. The balancing of the different interests in the forests can be done through planning. From this results also a choice of adequate management methods of the forest resources. The classical stand level in forestry requires now an additional scale -- the landscape level. The aim with this paper is to present a concept which attempts to integrate the disciplines involved -- ecosystem and landscape ecology and its components. Areas where research efforts are central are also mentioned.
    Keywords: Ecosystem and Landscape Forestry ; Sustainability ; Biodiversity ; Sustainable Biomass Production ; Water Quality ; Forest Management ; Socio-Economics ; Planning ; Forestry ; Biology
    ISSN: 0378-1127
    E-ISSN: 1872-7042
    Library Location Call Number Volume/Issue/Year Availability
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