云南苹婆属一新种

灌木,高2～4m;嫩枝密被星状毛和微柔毛,老枝具纵沟槽,具皮孔,变无毛。叶纸质,稀薄革质,倒披针形,长11～27cm,宽3.5～8cm,顶端渐尖,基部浅心形,稀楔形,嫩叶两面被星状毛,老叶变无毛,侧脉14～16对;叶柄嫩时被星状毛,老时变无毛,长2.5～5.5cm。总状花序腋生,长6～15cm,被紫红色星状毛,下倾或下垂。小苞片披针形。

九龙半岛城门大围森林群落分析——Ⅰ.外貌与结构

九龙半岛城门大围的森林群落是以黄桐(Endospermum chinense)等为优势的南亚热带常绿阔叶林,是一个保存得较完整的低地林的代表类群.本文研究分析了该森林群落的区系组成、外貌、结构等基本特征.

西樵山景观林改造——宫胁法的成功应用

Forest resources is limited inNanhai District of Foshan city. Since theimplementation of classified forestmanagement, the forests have not producedthe best ecological benefit, due to itsweakness in resistance to diseases andpests, forest fire and air pollution resultingfrom the simple species composition of theforests. Starting from 1997, XijiaoMountain in Nanhai District has been takenas an emphasis for forest standimprovement using the close-to-naturemanagement method, following the naturallaw of succession of forest community.Significant outcome have been achieved.