武夷山不同类型毛竹林的土壤水分物理性质分析

Soil Moisture & Physical Properties of Different Forest Types of Phyllostachys heterocycla in Wuyi Mountain

调查分析了武夷山不同类型毛竹林的土壤水分物理性质状况。结果表明,不同类型毛竹林的土壤容重大小为对照地〉竹杉林〉竹阔林〉毛竹纯林;土壤总孔隙度大小为毛竹纯林〉竹阔林〉竹杉林〉对照地;各林地土壤最大持水量、毛管持水量大小为毛竹纯林〉竹阔林〉竹杉林〉对照;最小持水量大小为毛竹纯林〉竹杉林〉竹阔林〉对照;三项持水量依次是对照值的1.04-1.19倍、1.06-1.14倍、1.09-1.14倍。毛竹林分在0-60 cm土壤层的质地较为疏松,孔隙增多,透气性好,有利于水分的运输与贮存,适宜毛竹鞭根生长,因此,科学合理地经营毛竹林分,避免过度人为干扰可有效改善林分的水分物理状况,促进竹林丰产。

Soil moisture physical properties of different Phyllostachys heterocycla mixed forest in Wuyi Mountain were studied.Result shows that： the size of soil bulk density of different Phyllostachys heterocycla mixed forest is：CK plotmixed forest of Phyllostachys heterocycla Cunninghamia lanceolatamixed forest of Phyllostachys heterocycla broadleaf tree bamboo pure forest;the size of total soil porosity is ：bamboo pure forestmixed forest of Phyllostachys heterocycla broadleaf treemixed forest of Phyllostachys heterocycla Cunninghamia lanceolataCK plot;the size of maximum water holding capacity of the soil capillary water is ： bamboo pure forestPhyllostachys heterocycla broadleaf tree mixed forest of Phyllostachys heterocycla Cunninghamia lanceolataCK plot;three items of water holding capacity is 1.04-1.19,1.06-1.14,1.09-1.14 times followed by CK values.Bamboo stand in the 0-60cm soil layer have the characteristics： relatively loose texture,increased porosity,good permeability;it is conducive to the transportation and storage of water suitable for root growth of bamboo whip.Therefore,bamboo stand should be managed scientifically reasonably;avoiding excessive disturbance can effectively improve the physical condition of the water stands promote bamboo yield.