鲁西湖区毛白杨林分合理经营密度的探讨

鲁西湖区毛白杨林分合理经营密度的探讨张树江，冯兆民，井庆山，刘志明，王庆需（山东省东平县林业局，２７１５００）毛白杨（ＰｏｐｕｌｕｓｔｏｍｅｎｔｏｓａＣａｒｒ．）是鲁西湖区主栽的乡土速生用材树种，占有林地面积２５％。由于营建速生丰产林，毛白杨林分发展...

闽北马尾松大径材培育林分合理经营密度表的编制

采用胸径—树冠法,在闽北地区建立马尾松大径材合理经营密度表,经检验表明模型回归相关系数为0.9999,达极显著水平,可以用该表指导生产。

人工马尾松复层混交林林分结构规律的研究

From the analysis and simulated study on the stand structures of present the multi\|stories mixed uneven\|aged Pinus massoniana planted forests in Fujian, the correlationships between stand diameter distribution structure,stand stock distribution structure, tree height and DBH were obtained. Several proposals for the rational management and structure adjustment of the present forests were put forward.

落叶松人工林最适密度的探讨

以林分中的优势木和亚优势木的树冠面积,作为单株林木最适宜的生长发育空间,来确定合理的林分密度,并依据林木胸径和树冠面积的密切关系,最终由林分平均胸径来确定林分最适的经营密度。