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Soil Physical Properties and Water Conservation Function of Four Typical Conservation Forest in Upper Reaches of Hunhe River
Author(s): 
Pages: 37-41
Year: Issue:  1
Journal: Journal of Northeast Forestry University

Keyword:  Upper reaches of Hunhe riverWater conservation forestSoil physical propertiesWater conservation function;
Abstract: 采用环刀法对浑河上游4种典型水源涵养林的土壤物理性质及其水源涵养功能进行了研究.结果表明:混交林的土壤物理性质和水源涵养功能明显好于日本落叶松(Larix kaempferi)纯林和辽东栎(Quercus liaotungensis)天然次生林.4种林分不同土层的土壤总孔隙度为48.41% ~69.07%,土壤总孔隙度平均值由大至小的顺序为核桃楸(Juglans mandshurica)—色木槭(Acer mono Maxim.)—花曲柳(Fraxinus rhynchophylla)混交林(65.22%)>冷杉(Abies holophylla Maxim.)—白桦(Betula platyphylla)—怀槐(Maackia amurensis Rupr.et Maxim.)混交林(61.45%)>日本落叶松纯林(53.90%)>辽东栎天然次生林(50.89%).不同林分土壤平均最大持水量、平均毛管持水量和平均非毛管持水量大小依次为核桃楸—色木槭—花曲柳混交林(1 304.45、908.78、395.67 t·hm-2)>冷杉—白桦—怀槐(1 252.51、905.26、347.26t· hm-2)>日本落叶松纯林(1 136.15、832.12、304.04 t·hm-2)>辽东栎天然次生林(1 057.27、817.88、239.40 t·hm-2).研究表明,核桃楸—色木槭—花曲柳混交林、冷杉—白桦—怀槐混交林土壤的总孔隙度和最大持水量高于辽东栎天然次生林和日本落叶松纯林,多树种混交增加了土壤持水能力,提高了土壤水源涵养功能.
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