中国特有种血皮槭的天然更新  

Natural Regeneration of Acer griseum, an Endemic Species in China

作　　者：陈朋[1] 于雪丹[1] 张川红[1] 郑勇奇[1] 孙圣[1] 程蓓蓓[2] 朱从波 

机构地区：[1]中国林业科学研究院林业研究所、国家林业局林木培育重点实验室,北京100091 [2]南京林业大学风景园林学院,南京210037 [3]河南宝天曼国家级自然保护区管理局,内乡474350

出　　处：《林业科学》2013年第3期159-164,共6页Scientia Silvae Sinicae

基　　金：国家林业局林业公益性行业科研专项经费(201204307);中央级公益性科研院所基本科研业务费专项资金项目(RIF2010-01)

摘　　要：血皮槭（Acergriseum），又名马梨光，槭树科（Aceraceae），槭树属（Acer），落叶乔木，高达20in，为中国特有种、濒危种（汪松等，2004）。血皮槭夏季树干树皮有卷曲状剥落，树皮色彩奇特，呈鲜明的橘褐色或红褐色，尤其在冬季，观赏价值极高。其树叶春、夏季为绿色，叶脉、叶柄及新梢为红色。In this study, the habitat, soil seed banks and natural systematically. As a sub-climax species and an associated tree species, regeneration of Acer griseum were investigated A. griseum scattered in the mountainous broad- leaved mixed forests, and the mountainous coniferous and broad-leaved mixed forests in addition to the mountaintop shrub forests. The species thrived mostly on semi-sunny slopes, semi-shade slopes, shade slopes and gullies. It grew in the mountain brown soil, yellow brown soil and mountain cinnamon soil. The thickness of soil layer, in which the species grew, was from the bare rock to about 30 cm soil range, some trees even grew in rock crevices. It naturally regenerated mainly by seeds, followed by some stump-sprouting and root sprouting. Most of the seeds in soil seed bank were stored in the litter layer. There were 172 seeds· m-5 in the litter, while only 42 seeds ·m-2 between 0 to 10 cm soil layer in Yuanling, Hunan province. Few or no seeds were found in deeper soil layer than 10 cm. The amount of seeds was negatively correlated with the distance from the parent tree and the wind also could contribute to seed dispersal. All the above results indicated that reduction of the quantity of A. griseum wild resources might be due to bad habitat, low seed yield and high percentage of empty seeds, difficulty of seed germination, as well as the poor environmental conditions for natural regeneration of the seedlings.

关 键 词：血皮槭 地理分布 土壤种子库 天然更新 

分 类 号：S754.1[农业科学—森林经理学]