祁连山不同林地类型对土壤理化性质和水源涵养功能的影响

Influence of Different Type of Forest Land on Soil Physico-chemical Property and Function of Water Conservation

以祁连山灌木林、针叶林、阔叶林3种林地为研究材料,探讨不同林地类型对土壤理化性质和水源涵养功能的影响,结果表明:土壤孔隙度、团粒结构、物理性粘粒含量均为灌木林>针叶林>阔叶林,土壤容重、物理性砂粒含量均为灌木林<针叶林<阔叶林;土壤有机质、全N、速效N、速效P、速效K、CEC均为灌木林>针叶林>阔叶林,而CaCO3、pH、全盐含量均为灌木林<针叶林<阔叶林;土壤水层厚度、自然含水量、饱和蓄水量、毛管蓄水量、非毛管蓄水量、贮水量均为灌木林>针叶林>阔叶林;枯落物积累厚度、枯落物积累干质量、持水量、最大持水率均为灌木林>针叶林>阔叶林。灌木林植物种类丰富,郁闭度大,枯落物积累数量多,水源涵养功能强。

This paper with the bush forest, needle leaf forest and rich leaf forest of Qilian mountains 3 kinds of forest land is research material, discuss the different type of forest land as soil reason melts, the influence of nature and the self-control function of source of water, show as a result： Soil porosity, granule structure and physicalness glue grain content is bush forest 〉 needle leaf forest 〉 rich leaf forest, soil unit weight and physicalness sand grain content are bush forest 〈 needle leaf forest 〈 rich leaf forest; Soil organic matter, whole N, N of quick result, P of quick result, K of quick result and CEC is bush forest 〉 needle leaf forest 〉 rich leaf forest, and CaCO3, pH, completely salt content is bush forest 〈 needle leaf forest 〈 rich leaf forest; Soil water layer thickness, natural water content, saturation reservoir storage and woollen pipe reservoir storage, not woollen pipe reservoir storage, store water quantity is bush forest 〉 needle leaf forest 〉 rich leaf forest; Withered fall thing accumulation thickness, withered fall thing accumulation dry quality, hold water quantity, biggest hold water rate is bush forest 〉 needle leaf forest 〉 rich leaf forest. Bush forest plant kind is rich, closing degree big, withered fall thing accumulation quantity much, the self-control function of source of water is strong.