摘要
2011年1～5月,采用访问调查与实地调查相结合的方法,在景东县对景东翅子树居群数量与分布进行调查。结果表明:景东县境内共分布有景东翅子树2 432株,分为9个居群,面积共计70.8 hm2,分布区涉及5个乡镇;高度1～5 m的景东翅子树植株数量占总株数的61.22%;景东翅子树的平均分布密度为34株/hm2;景东翅子树的平均分布海拔为1 440～1 530 m;有60株景东翅子树分布在无量山国家级自然保护区内,其余全部分布在自然保护区外;景东翅子树划分为8级立木径级结构,生长期分4个阶段,为下降型居群,居群数量不断减少,应采取措施加以保护。
From January to May, 2011, the populations and distribution of Pterospermum kingtungense that distribu- ted in Jingdong county of Yunnan province were surveyed through interview and fieldwork. Nine populations and 2 432 individuals were discovered in Jingdong County, the populations＇ area was 70. 8 hm2 and 5 townships involved. Among all the individuals, 61.22 % of the individuals had the height of 1 - 5 m and 77. 96 % of the individuals with the DBH under 5 cm. The average value of plants with DBH higher than 2 cm was 6. 33 cm. The average distribution density of P. kingtungense in Jingdong County was 34 individuals/hm2 and the average elevation was 1 440 - 1 530 m. There were only 60 individuals distributed in the Wuliangshan National Nature Reserve, many populations of P. kingtungense distributed in ecological public welfare forest region. The P. kingtungense could be divided into 8 di- ameter classes, and the growth could be classified into 4 stages, the population was a declining population.
出处
《西部林业科学》
CAS
2011年第4期41-47,共7页
Journal of West China Forestry Science
基金
国家级自然保护区中央财政补助项目支持
关键词
景东翅子树
居群
数量
分布
结构
动态
P. kingtungense
population
distribution
Jingdong county
