摘要
应用干燥度和≥10℃的年积温,建立了油松生长的水热指数;提出了油松生长的水热指数与年平均生物量的关系;根据水热指数划分了油松地理分布区的质量等级。
Hydrothermal indexes for the growth of pinus tabulaefrmis were set up with aridityand annual accumulated temperature (≥10℃). The relationship betweern hydrothermal indexand average annual biomass was advanced, and the quality degrees of geographical distributionsof P. tabulae formis were divided based on hydrothermal indexes.
出处
《西北林学院学报》
CSCD
1995年第3期35-39,共5页
Journal of Northwest Forestry University
关键词
油松
水热指数
地理分布等级
Pinus tabulaeformis
hydrothermal index
quality degrees of geographicaldistributions