1) Erythrophleum fordii population
格木种群
1.
Analyses of the dynamic state of Erythrophleum fordii population;
鼎湖山格木种群动态分析
2) tree population
乔木种群
1.
Based on a 2×2 contingency table,interspecific association of 13 main tree populations of the montane elfin forest in shimentai Nature Reserve,Guangdong Province,was studied using variance ratio(VR),~2 text,association coefficient(AC),percentage of co-occurrence(PC),and Pearson r correlation coefficient.
结果表明:13个乔木种群总体呈不显著的负联结;78对种对中,绝大多数种对联结关系未达到显著水平,种对间的独立性相对较强,相关性较弱,只有15对种对存在较强的相关性,这些可能与群落目前所处的阶段和特殊的生境条件有关。
2.
Using the methods of t-test of s~(2) ratio,negative binomial parameter K,mean crowding index,patchiness index,Morisita index and the method of nearest neighbor,the spacial distribution patterns of the main tree populations in montane forest in Caiyanghe nature reserve were studied.
采用方差/均值比的t检验法、负二项式分布指数K、平均拥挤度m、聚块性指数m x、丛生指标I、Morisita指数及最近邻体法对菜阳河自然保护区山地雨林的优势乔木种群的分布格局进行了研究。
3.
The niche breadths and overlaps of 20 main tree populations in the evergreen broad-leaved forest in Simian Mountain, were measured by using the formulas described by Levins ,Hurlbert and PianKa ,and the relationships among niche breadth, niche overlap and interspecific association were discussed in this paper.
利用Levins、Hurlbert生态位宽度公式和Pianka生态位重叠公式测定四面山常绿阔叶林20个主要乔木种群的生态位宽度和生态重叠,并对生态宽度、生态位重叠以及种间联结性的关系进行初步探讨。
3) shrub population
灌木种群
1.
Interspecific association of the main shrub population in the Gymnosphaera podophylla community at Jiulong Lake water-conservation forest,Zhaoqing city;
肇庆九龙湖水源涵养林黑桫椤群落主要灌木种群的种间联结性研究
2.
Niche characteristics of main shrub populations in the arid valley of the Minjiang River,southwestern China.;
岷江干旱河谷主要灌木种群生态位研究
3.
In this paper,the spatial pattern for 4 main shrub populations in Wulanbuhe Desert,Inner Mongolia was studied by using the semivariogram in Geostatistics.
应用地统计学中半方差函数,研究了内蒙古乌兰布和沙漠主要4种灌木种群的空间格局。
4) Bruguiera gymnorrhiza population
木榄种群
1.
The characteristics of the height structure of Bruguiera gymnorrhiza population in National Shankou Mangrove Nature Reserve were studied by measuring the fractal dimension of height contour.
结果表明 ,木榄种群的高度结构具有分形的特征 ,其计盒维数介于 1。
5) Mulei population
木垒种群
6) Schime superba population
木荷种群
补充资料：格木
| 格木 Erythrophleum fordii 苏木科格木属常绿乔木。又称铁木。全属17种。中国仅此一种，分布于广西、广东、福建和台湾300米以下低山、丘陵地带。木材暗褐色，材质坚硬，干燥后不变形，耐水耐腐，为名贵家具、造船、建筑等的良材；树冠浓荫苍绿，是优良观赏树种。为中国二级重点保护植物。树高达25米。小枝被短柔毛。二回奇数羽状复叶。腋生圆锥花序，花萼钟状，花冠白色。荚果带状扁平，厚革质，2瓣裂。种子扁椭圆形，黑褐色。喜光，喜温暖湿润气候。适生于平均气温21℃以上的地方。幼苗、幼树不耐寒，怕霜冻。在土壤肥沃、湿润、深厚的山坡下部、山谷生长迅速，当荚果由绿色变为黑褐色时即可采收。在冬季温暖地区，可随采随播。1年生苗高30～40厘米，即可出圃造林。造林地宜选择海拔600米以下土层深厚的酸性沙壤土或轻粘土。造林密度宜大些。可营造纯林或与木荷、马尾松等混交。主要虫害有细皮夜蛾等。
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参考词条