主要生态因子对火炬松生长的影响

分析主要生态因子对火炬松生长的影响,结果表明：立地类型、海拔高度、坡度对火炬松的胸径、树高、单株材积、单位面积蓄积量等,均有极显著的影响;土壤的腐殖质、速N、速P含量与火炬松胸径、树高的生长密切相关,从而影响了单株材积和单位面积蓄积;土壤K含量对火炬松生长没有影响;年降水量、2～7月份的降水量对火炬松的胸径、树高生长有明显的影响,年积温对胸径生长有明显影响,对树高生长没有影响。

Affect of Main Ecological Factors on Growth of Pinus taeda

The affect of main ecological factors on growth of Pinus taeda was analyzed,the results showed that: site type,altitude,slope have very significant impact on the DBH,tree height,plant volume,stock volume per unit area of Pinus taeda,etc.;soil humus,content of available N and P were closely related with the growth of DBH and height of Pinus taeda,thus affected the volume and per unit area per plant accumulation;K content of soil has no affect on the growth of Pinus taeda;Annual precipitation and February-Jul...