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长白山西侧松江河林区森林沼泽有着广泛分布,一般多在海拔高700—1000米左右。目前沼泽地落叶松林生产力,由于地下水位过高,土壤水分过于饱和,在这种生态环境下,往往形成小老树。对这一类林分,如何提高其生产力,我们于1974年在紧北森林经营所16林班8小班,属中位沼泽,进行了挖沟排水试验。沟宽50厘米,深70厘米,沟间距为10米左右,土壤为泥炭土。从开沟以来,未进行过清理,目前有些淤泥堆积,沟深淤为30—40厘米。尽管如
Changbai Mountain west of Songjiang River forest swamp forest has a wide distribution, usually at an altitude of 700-1000 meters. At present, the productivity of larch forest in swampland is too small due to the high groundwater level and the soil moisture is too saturated. In this ecological environment, small larch trees are often formed. For this type of forest, how to improve its productivity, we conducted a digging ditch drainage test in 16 small classes of forest classes in Tsebei Forest Management Center in 1974, which is a middle marsh. Groove width of 50 cm, 70 cm deep, trench spacing of about 10 meters, the soil is peat soil. Since the ditch has not been cleaned, there are some silt accumulation, ditch deep silt 30-40 cm. Despite that