章古台地区樟子松人工林土壤水分物理性质的研究

以章古台地区樟子松人工林地土壤为研究对象,依照不同立地、不同林龄、不同林型和不同林分密度研究了樟子松人工林改良土壤水分物理性质状况和林地土壤含水率。结果表明:不同林龄林地土壤含水率有明显区别:0～20年生林分土壤含水率较高,至27年生林分林地土壤含水率为最低,27年生以后林分土壤含水率有所回升。甸子地樟子松固沙林改善土壤水分物理性质优于坨子地樟子松固沙林。不同林龄间土壤水分物理性质区别不明显,但较裸沙地要好。从改良土壤水分物理性质效果来看:樟杨混交是较好造林类型,600～800株/hm2是章古台樟子松固沙林适宜的林分密度。

STUDY ON THE PHYSICAL PROPERTY OF SOIL WATER OF PINUS SYLVERTRIS VAR.MONGOLICA PLANTATION IN ZHANGGUTAI AREA

Taking Pinus sylvestris.var.mongolica plantation in Zhanggutai area as study object,was studied physical property of soil water and soil water content according to different sites, stand types, stand ages and sand densities.The result showed that,the soil moisture of different stand ages was different.The soil moisture content in 0 to 20 years' stands is higher.The soil moisture content is the lowest at the age of 27.Begins growing after 27-years.Result showed ability to improve physical property of soil water of Pinus sylvestris var.mongolica dune-fixing forest on marshyland is better than on lumpland and there is no distinct difference among different stand ages. But their improvements are all more obvious than bare sands.From the effect we can reach the conclusion that mixing of Pinus sylvestris L.var mongolica with poplar is the best plantation type,600～800 plants/hm~2 is the best planting density.