湿地松在贵州国有龙里林场不同海拔造林试验研究

Afforestation Experiment of Pinus elliottiiin Guizhou State-Owned Longli Forest Farm at Different Elevation

指出了在贵州省中部,湿地松林分生长量有规律地显示出随海拔的增高而降低,海拔愈高,林分生长量愈低,海拔高于1300m时,生长量较低,在此生长的湿地松幼树,冬季均发现少数冻害,因此海拔1300～1400m,是贵州中部发展湿地松的上限,海拔是限制湿地松垂直发展的主要因子。试验结果表明:湿地松适合于贵州省中部低中山(海拔1300m以下)发展,可列为这一地区营造速生丰产林的主要造林树种之一。

In the central part of Guizhou Province,the growth amount of wetland Pinus elliottii shows a regular decrease with the increase of elevation.The higher the elevation is,the lower the growth of forest is.When the altitude is above 1300 meters,the growth is poor and there are a few frost damages in winter.So,the altitude of 1300-1400 meters is the upper limit of the development of Pinus elliottii in central Guizhou.The altitude is the main factor limiting the vertical development of Pinus elliottii.Pinus elliottii is suitable for the development of low Zhongshan(less than 1300 meters above sea level)in central Guizhou province,which can be listed as one of the main afforestation tree species for the construction of fast-growing and high-yield forests in this region.