宁化县闽粤栲造林效果分析

Forestation Analysis of Castanopsis fisaa in Ninghua County

通过对宁化国有林场杉木与闽粤栲混交造林成效的全面调查,分析了现有林分的生长状况,探讨了不同立地质量等级、不同坡位、不同坡向、不同混交比例和不同混交方式等对闽粤栲及杉木生长的影响,结果表明:不同立地质量等级、坡位、坡向对闽粤栲胸径、树高生长和蓄积量影响显著,在立地条件较好的阴坡或半阴坡的中下部更适宜闽粤栲生长,胸径、树高、材积生长量较高。同时,杉木与闽粤栲混交造林,能够促进杉木生长,胸径、树高、材积生长量均超过杉木纯林,混交比例以杉木与闽粤栲3∶1的比例生长量最大,混交方式则以带状混交的生长量最大,人工造林应大力发展混交林。

This paper investigated the mixed forestation of Castanopsis fissa County State Forest Centre, analysed the growth character of the existing forest stand, and chinese fir in Ninghua discussed the effect of different site quality levels, slope location, slope direction, mixing proportion and mixing methods to the growth of Castan- opsis fissa and chinese fir. The results showed that different site quality levels, slope location, slope direction affect the height, diameter, growing stock of Castanopsis fissa obviously, and the Castanopsis fissa grows faster in the middie and down poor or half poor light slope. In mixed stands Castanopsis fissa grows faster than in pure stands. The growing stock is the most when the mixed proportion of chinese fir and Castanopsis fissa is 3： 1, or is in the belt mixed stands, so the mixed stands need to be developed widely.