经回归分析，得出草坪蒸散量与郁闭度呈指数变化。
And the exponential curve relationship between the evapotranspiration of turfgrass and canopy density above it was found.
微栖息地的主要特征是坡上位、坡度小、郁闭度较高；
The characters of microhabitats are up the slope and small gradient.
利用线性回归方程来确定植被郁闭度和鸟类数量和鸟类密度的关系。
The asymptotic regression function formulae were adopted to identify the relationships between the vegetation coverage and the Numbers of bird species and individuals.
在分析LS估计存在缺陷的基础上，提出采用岭估计建立郁闭度估测方程。
Then, based on the analysis of possible limitation of LS estimation, the ridge estimation is put forward to establish the equation of canopy density estimation.
判定低质低效林的依据是林分的结构、林木个体质量、密度和郁闭度、灌木林结构和功能。
Forest structure, individual quality, tree density and crown density, and structure and function of brush forest are used to construct a criterion to the LQBF.
结果表明：空间统计学半方差方法可以作为郁闭度较高纯林林分冠幅估计的一种有效方法。
It is concluded that the semivariogram method of spatial statistics may be as an effective means of estimating the crown of pure forest stand with relative high crown closure.
林分标准郁闭度达0.85以上时，胸径连年生长量已下降，株数间伐强度以不超过30%为宜。
While standard degree of closing of the plantation reached 0.85, current annual increment of DBH started to decline, and the intensity of thinning should not exceed 30%.
而郁闭度、坡度、植被类型、乔木高度、灌木高度、树桩高度、树洞密度、人为干扰的影响不明显。
The random factors were the canopy, slope degree, vegetation type, tree height, shrub height, tree stump height, tree hole density and human disturbance.
演替驱动力主要有：胶林郁闭度、胶林抚育管理措施、气候和土壤条件以及胶林植被本身的生物学特性。
The main drives of succession include canopy density of rubber forest, management, climate, soil condition and the biological properties of vegetation.
结果表明，油松林分郁闭度是影响松毛虫害发生的主要因子，林内灌草植物喜湿度对虫害具有指示意义。
On the basis of quantification of damage and hygrophilous extend, the indicator plants was studied by multiple regression.
由于多次过量采伐干扰及自然灾害，小兴安岭林区形成大面积郁闭度较低、生产力低下且林相衰败的低质林。
There are large areas low-quality forest with low canopy density, low productivity because of over-harvesting operations and natural disasters.
是采取诱杀措施的重要时期；诱饵树的设置应以通风向阳的林道旁或郁闭度较小林分的林窗中为宜，距寄主植物有一定距离的林缘更佳。
Setting up alluring tree should be on sides of ventilative and sunny forest road or in forest windows with a less crown density.
对等密度107杨幼龄林进行一次性施肥灌溉措施对比试验，结果表明，一次性水肥措施对其幼林未郁闭前各龄期胸径生长量和郁闭度均有促进作用。
Comparative experiments was conducted on the effect of one-time irrigation and fertilization on the DBH and crown density of young 107 poplar plantations of even planting density.
对等密度107杨幼龄林进行一次性施肥灌溉措施对比试验，结果表明，一次性水肥措施对其幼林未郁闭前各龄期胸径生长量和郁闭度均有促进作用。
Comparative experiments was conducted on the effect of one-time irrigation and fertilization on the DBH and crown density of young 107 poplar plantations of even planting density.
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