摘要
通过对９株不同立地条件的２０年生湿地松人工林的优势木的树干解析，利用实测数据拟合生长动态方程，结果表明：Ⅰ类地胸径连年生长量最大值出现在第４ａ，Ⅱ、Ⅲ类地出现在第６ａ；树高连年生长量最大值Ⅰ、Ⅱ类地为４ａ，Ⅲ类地较迟，大约在６～８ａ；材积连年生长量在１６～１８ａ达到最大，但在３种立地条件下都未达到数量成熟；利用已有数据拟合出的不同立地生产过程的方程，精确度较高，可供生产上参考。
The results reveal that the maximum value of the dbh current annual growth in the I-type site appears in the fourth year and that in the -type site or in the -type site appears in the sixth year;the maximum value of the height current annual growth in the -type site or in the -type site appears in the fourth year and that in the -type site appears in about 68 years;the maximum value of the volume current annual growth appears in the 16th18th year;and the equation of different-site growth process fitted by the existing data may be for reference in production because of its higher precision.
出处
《福建林业科技》
北大核心
1999年第2期40-43,共4页
Journal of Fujian Forestry Science and Technology
关键词
闽南山地
湿地松
立地类型
生长过程
South Fujian hilly land
Pinus elliottii
Site type
Growth process
