宁化县闽粤栲造林效果分析

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。

Analysis of Castanopsisfisaa Rehderwils in Ninghua County

Abstract: After completely investigating the result of mixed forest of firs and Castanopsis fissa in Ninghua County, this essay analies the growing characteristics of those forest stand, discusses the effect of being grown in different mass grades, different slope location and slope gradient, being grown in different mixed proportion, and different ways of being mixed to the growing condition of Castanopsis fissa and firs. The result that different site quality grade, slope location and slope gradien affect Castanopsis fissa, tree height and stand volume growth significantly. This essay also reveals the result of the analysis which Castanopsis fissa grow better if they are grown under better condition of mass grades, such as being grown in the shade slope of a mountain. The stem diameters, tree height and total volumn of the trees are larger under these growing contiontions. And, mixed growing of firs and Castanopsis fissa promote the growing of firs. The stem diameters, tree height and total volumn of firs in such mixed forests are all better than those in pure fir forest. It will turn out to be the largest growth, when the mixed proportion between firs and Castanopsis fissa is 3:1, and the Zoster mixed is chosed as the mixed mode. So people should develop more mixed forests in afforestation.