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本项研究,目的在于掌握锐齿栎林分群体生长量随密度而变化的规律,为抚育间伐作业提供最佳经营密度数量依据。一、标地设置及调查方法1.标地设置;1980年5～6月,在我所麦草沟试验基地的30～35年生实生锐齿栎林分中,设置面积为0.1公顷的定位试验标地12快。各标地按生境和主要测树因子基本相同的原则分为8组(每组各4快)。第一组坡向:南偏东,海拔1650米左右,标地设在山坡中部。第二组坡向:东,海拔1700米左右,沿山脊设置。第三组坡向:北偏西,海拔1750米,设在坡上部。
The purpose of this study is to understand the rule that the growth of Quercus aliena stands varies with the density and provide the best basis for the management of thinning operations. First, the standard set and survey methods 1. Marked set; 1980 May to June, in our wheat straw ditch experimental base 30 to 35 years old plantation Quercus aliena stands, set an area of 0.1 hectare positioning test standard Fast 12 to. The target areas are divided into 8 groups (each 4 fast) according to the principle that habitats and the main tree-determining factors are basically the same. The first group of slopes: south east, about 1650 meters above sea level, marked in the middle of the hillside. The second group of aspect: East, about 1700 meters above sea level, set along the ridge. The third group of aspect: north west, elevation 1750 meters, located in the upper part of the slope.