Process-based modelling of timothy survival in winter

摘要：

Introduction Timothy ( Phleum p ratense,L.) is the most widely grown sown grass species for silage and hay production in Scandinavia,and is common in many other countries with a cold and maritime climate,like Canada and the Baltic countries.Although timothy is a winter hardy species,every winter some damage is suffered.The two most severe damage mechanisms are frost and ice-encasement followed by anoxia and build-up of toxic compounds in and around the plants.The major tolerance mechanism is hardening,which can be quantified as the LT50 (Lethal Temperature for 50％ of the plants in standard testing).Climate change is expected to increase both average winter temperature and weather variability.This may impede the hardening process.The international project WINSUR aims to quantify the associated risks for Norwegian grassland,using both experimentation and process-based modelling.

关键词： climate change damage mechanisms tolerance physiology yield

作者: M.Van Oijen S.M.Thorsen A.H.C.M.Schapendonk M.H(o)glind

作者单位: CEH-Edinburgh,Bush Estate,Penicuik E H26 0QB,U.K Bioforsk,Saerheim,Norway Plant Dynamics,WAgeningen,The Netherlands

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）