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利用56株解析木,分析了不同密度、坡向、坡位刺槐林生长分化特征。研究表明:不同密度、坡向、坡位的林分生长量、速生期长短不一,导致了林木分化。分化过程主要表现在分级木的相互转换中。刺槐林以树高、胸径表述的转换率分别为:35.7%,21.4%。将坡向按转换率从高到低的排序为:阳坡、半阳坡、阴坡。不同坡向以树高、胸径表述的转换率分别为:41.7%、38.5%、0,25.0%、23.1%、0。密度多大将会影响林分生长,须分坡向、坡位进行量化。自造林后第几年林木开始分化形成分级木,须确定准确林龄,这对人工林集约经营有指导意义。
Using 56 tree species, we analyzed the growth and differentiation of Robinia pseudoacacia forests with different densities, aspect and slope positions. The results showed that the stand growth rate and fast-growing period varied in different densities, aspect and slope position, which led to the differentiation of forest trees. The differentiation process is mainly manifested in the conversion of graded wood. Robinia pseudoacacia forest tree height, DBH conversion rates were expressed as: 35.7%, 21.4%. The slope from high to low conversion rate according to the order: sunny slope, half sunny slope, shady slope. The conversion rates of tree height and DBH at different slopes were 41.7%, 38.5%, 0,25.0%, 23.1%, respectively. How much density will affect stand growth, to be divided into slope, slope position to quantify. Since the first few years after afforestation began to differentiate the formation of grafted wood, to determine the exact age of the forest, which is instructive intensive management of plantations.