Discrimination between acute and chronic decline of Central European forests using map algebra of the growth condition and forest biomass fuzzy sets: A case study
Autor: | Pavel Cudlín, Miloš Zapletal, Pavel Samec, Miloš Kučera, Pavel Tuček, Jan Caha |
---|---|
Rok vydání: | 2017 |
Předmět: |
Abiotic component
Biomass (ecology) Environmental Engineering 010504 meteorology & atmospheric sciences Ecology Biodiversity Forestry Soil carbon 010501 environmental sciences 01 natural sciences Pollution Humus Forest ecology Environmental Chemistry Environmental science Ecosystem Waste Management and Disposal Silviculture 0105 earth and related environmental sciences |
Zdroj: | The Science of the total environment. |
ISSN: | 1879-1026 |
Popis: | Forest decline is either caused by damage or else by vulnerability due to unfavourable growth conditions or due to unnatural silvicultural systems. Here, we assess forest decline in the Czech Republic (Central Europe) using fuzzy functions, fuzzy sets and fuzzy rating of ecosystem properties over a 1×1km grid. The model was divided into fuzzy functions of the abiotic predictors of growth conditions (Fpred including temperature, precipitation, acid deposition, soil data and relative site insolation) and forest biomass receptors (Frec including remote sensing data, density and volume of aboveground biomass, and surface humus chemical data). Fuzzy functions were designed at the limits of unfavourable, undetermined or favourable effects on the forest ecosystem health status. Fuzzy sets were distinguished through similarity in a particular membership of the properties at the limits of the forest status margins. Fuzzy rating was obtained from the least difference of Fpred-Frec. Unfavourable Fpred within unfavourable Frec indicated chronic damage, favourable Fpred within unfavourable Frec indicated acute damage, and unfavourable Fpred within favourable Frec indicated vulnerability. The model in the 1×1km grid was validated through spatial intersection with a point field of uniform forest stands. Favourable status was characterised by soil base saturation (BS)>50%, BCC/Al>1, Corg>1%, MgO>6g/kg, and nitrogen deposition |
Databáze: | OpenAIRE |
Externí odkaz: |