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2012年5月,在小兴安岭凉水国家级自然保护区阔叶红松混交林2.55 hm2的固定样地内,调查了由掘根风倒形成的38对丘坑复合体所处的7个小林隙、5个中林隙和3个大林隙以及7个郁闭林分的基本状况.于2012年6—9月,每月选定6个典型晴天,测定处于大林隙、中林隙和小林隙以及郁闭林分内每个丘坑复合体不同微立地(坑底、坑壁、丘顶、丘面及完整立地)的土壤温度、土壤含水量和空气相对湿度.结果表明:6—9月,丘顶的土壤温度平均值最大,坑底最小;坑底土壤含水量和空气相对湿度的平均值最大,丘顶最小.上述指标在大多数微立地之间差异显著.6—9月,位于不同大小林隙和郁闭林分的丘坑复合体土壤温度总平均值依次为:大林隙>中林隙>小林隙>郁闭林分;各月份土壤水分大小次序并不一致;6月、8月和9月丘坑复合体各个微立地月均空气相对湿度大小顺序均为郁闭林分>小林隙>中林隙>大林隙,7月的排列次序有所不同.上述指标在不同大小林隙及郁闭林分内丘坑复合体大多数微立地之间差异显著.不同大小林隙和郁闭林分内丘坑复合体各微立地月均土壤温度和空气相对湿度均为7月最大,9月最小;除完整立地6月月均土壤含水量最大以外,其余微立地均为7月最大,9月最小.丘坑复合体微气候的变化主要受林隙大小、微立地和时间等的影响.
In May 2012, in a fixed sample of 2.55 hm2 broadleaved-Korean pine mixed forest in Liangshui National Nature Reserve, Xiaoxing’an Mountains, Gap and three large gaps and the basic situation of seven closed forests.In June-September 2012, six typical sunny days were selected and the results were in the gaps with large gaps, middle-gap and small gaps, Soil temperature, soil water content and relative humidity of soil in different micro-plots (pit bottom, pit wall, hilltop, mound and intact) of each mound-hole complex were analyzed.The results showed that from June to September, The average of soil temperature is the largest and the bottom of the pit is the smallest.The average value of soil water content and air relative humidity at pit bottom is the highest and the top of hilltop is the smallest.The above indexes have significant differences between most micro-stands.6- The mean values of soil temperature in the mound and karst pitches of Yukuai forest were as follows: large gap> middle gap> small gap> closed forest. The order of soil moisture in each month was inconsistent; in June, August and September Pit complex each micro-site on the average relative humidity of air in the order of canopy stand> small Gap> middle gap> big gap, and the order of arrangement is different in July.The above indexes have significant difference between most micro-stands of the mound pit complex in different size and macro-canopy stand.The gap and gap The average monthly soil temperature and air relative humidity of the microclimate in the confined forest were the largest in July and the lowest in September, except for the largest monthly average soil moisture content in June and June, , And the smallest in September.The change of microclimate in the pit-cave complex was mainly affected by the size of the gap, micro-site and time.