黄土高原刺槐生长动态研究

On the growth dynamics of locust in the loess plateau

本文对黄土高原刺槐生长状况进行了分析,并且分析了水分条件对刺槐生长的影响;进而利用多项式逐步回归的方法对刺槐的生长进程进行了模拟。分析得出,在黄土高原地区年均降雨量大于500mm 的地区,在营林密度不大于150株/亩的条件下,刺槐可期望成材;在年均降雨量400～500mm 的地区,营林密度应再降低,但本区刺槐已难成大径级材。

It ananlyses the dynamic growing of locust,the effects of water condition on the growth in the loess plateau,and simulates the growing process of locust by progressive regression of multinomial.The results shows that when the planting density of trees is not more than 150/mu in the region with the average annual rainfall of more than 500mm,the lo- cust is expected to become timber.But the density should be reduced fur- ther in the regions where the average rainfall is 400～500mm in a year, locust there is not possible to beconqe large-sized timber.