caa a22 4500 445367253 CHVBK 20180317142934.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s00484-010-0338-9 doi (NATIONALLICENCE)springer-10.1007/s00484-010-0338-9 Wittich Klaus-Peter Zentrum für Agrarmeteorologische Forschung, Deutscher Wetterdienst, Bundesallee 50, 38116, Braunschweig, Germany aut Phenological observations of grass curing in Germany [Elektronische Daten] [Klaus-Peter Wittich] The degree of grass curing, i.e. the proportion of dehydrated dead grass per unit grassland area, is one of the most important parameters affecting grassland fire risk and fire behaviour. The objective of the present study was to develop a simple relationship between grass moisture and grass curing to use as an input into the next-generation fire-danger rating models of the Deutscher Wetterdienst. Seasonal changes in yellow and green portions of grass plots were estimated visually at weekly intervals. At the same time, the grass-moisture content was measured gravimetrically after destructive sampling. Regression analysis revealed an exponential relationship between decreasing leaf moisture and increasing yellowing level, in rough agreement with findings reported from Australia and North America. ISB, 2010 Grass curing nationallicence Grass yellowing nationallicence Senescence nationallicence Live and dead leaf moisture content nationallicence Drought nationallicence Fire danger nationallicence International Journal of Biometeorology Springer-Verlag 55/3(2011-05-01), 313-318 0020-7128 55:3<313 2011 55 484 https://doi.org/10.1007/s00484-010-0338-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00484-010-0338-9 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Wittich Klaus-Peter Zentrum für Agrarmeteorologische Forschung, Deutscher Wetterdienst, Bundesallee 50, 38116, Braunschweig, Germany aut NATIONALLICENCE 773 0- International Journal of Biometeorology Springer-Verlag 55/3(2011-05-01), 313-318 0020-7128 55:3<313 2011 55 484 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer