中国北方地区主要树木的气候生产利研究

水资源短缺严重制约了华北高产粮区农业的可持续发展。本文对华北地区农业可持续发展的水问题况进行了阐述，对华北高产粮区的典型区域山东省桓台县农用水资源利用现状进行了分析，指出水资源浪费、污染严重，水资源管理不善是水资源利用过程中存在的最主要问题。并在区域、农中国北方地区；树木；气候生产力

CLIMATIC PRODUCTIVITY OF MAIN TREE SPECIES IN NORTH REGION OF CHINA

Based on the Logistic curve, a model to calculate the tree climatic productivity was established. By employing this model, the climatic productivity of tree species in north region of China was calculated. The results showed that the tree quantitative maturity age was shortened in a good thermal region; while in a bad thermal region the quantitative maturity age was longer. The volume increment of tree species is greater in a good water region than that in a bad water region. The main factor impacting the tree growth within the north region of China is drought. Furthermore, it is argued that to develop forest production in northern China, it is necessary to select relevant trees accordant with the climate characteristic and the purpose of forest production.