摘要
１９９３年到１９９７年的调查结果表明：广西境内银杉（Ｃａｔｈａｙａａｒｇｙｒｏｐｈｙｌａ）种群个体高于１ｍ的数量为１８４株，其中花坪林区９１株，大瑶山林区９３株；个体高小于１ｍ数量３５０株，花坪林区为１２０株，大瑶山林区２３０株广西银杉种群现存数量５３４株对广西大瑶山银杉种群进行样地环境调查和种群分布格局分析结果表明：１）天然更新良好的分布点银杉种群呈集群分布，否则趋均匀分布；银杉种群大小级个体分布表现为由集群分布趋向均匀分布或随机分布的衰退型结构格局２）银杉种群衰退原因与土壤无机盐含量的变化存在重要相关３）珍稀濒危植物的保护应有针对性对策。
This research was carried out from 1993 to 1997. The results show that there are 534 cathaya argyrophylla in Guangxi, of which 184 are taller than 1 m with 91 in Huaping forest zone and 93 in Dayaoshan forest Zone. The rest(350) are below 1 m, with 120 in Huaping forest zone and 230 in Dayaoshan forest zone. The research on the sample habitats and analysis of the distribution shows:1) Naturally well reproduced cathaya argyrophylla population distributes in clump, or the distribution of cathaya argyrophylla population shows a trend from clump to regularity, or in portion; 2)The decline of cathaya argyrophylla population has a close relationship with the changing composition of inorganic salts in soil; 3) To protect this valuable plant species appropriate measures, different from those in the headwater forest must be taken.
出处
《广西师范大学学报（自然科学版）》
CAS
1998年第4期68-74,共7页
Journal of Guangxi Normal University:Natural Science Edition
基金
广西师范大学科研资金
关键词
银杉
种群数量
分布格局
衰退
保护
种群生态学
cathaya argyrophylla
population quantity
distribution
decline
protect
