中国东部荒漠草原主要植物群落类型及特征
|
李慧卿, 褚建民, 李清河
|
Types and characteristics of plant communities in eastern desert steppe of China:an example in Sonid Left Banner, Sonid Right Banner, and Erenhot region
|
Huiqing Li, Jianmin Chu, Qinghe Li
|
|
表3 灌木群落综合特征与草本群落特征的T检验
|
Table 3 Two Sample T-Test between shrub communities (Comprehensive characteristics) and grass communities
|
|
指标 | 群落类型 | 数量 | 平均值 | 标准差 | 标准误 | 中位数 | 方差 | T 统计 | 自由度 | P |
---|
物种丰富度 | 灌木 | 11 | 7 | 2.2033 | 0.6643 | 7 | 相等 | 1.8794 | 17 | 0.0775 | | 草本 | 8 | 6 | 1.1650 | 0.4119 | 6 | 不等 | 2.0644 | 15.8251 | 0.0558 | 高度 | 灌木 | 11 | 19.6 | 6.3115 | 1.9030 | 17.8 | 相等 | 5.4308 | 17 | 0.0000 | | 草本 | 8 | 6.4 | 3.0710 | 1.0857 | 5.3 | 不等 | 6.0197 | 15.2601 | 0.0000 | 盖度 | 灌木 | 11 | 35.2 | 15.9202 | 4.8001 | 27.8 | 相等 | 2.5642 | 17 | 0.0201 | | 草本 | 8 | 19.8 | 6.9076 | 2.4422 | 19.5 | 不等 | 2.8738 | 14.4627 | 0.0119 | 密度 | 灌木 | 11 | 137 | 161.0835 | 48.5685 | 93 | 相等 | 1.0196 | 17 | 0.3222 | | 草本 | 8 | 77 | 38.0216 | 13.4427 | 68 | 不等 | 1.1838 | 11.4944 | 0.2604 | 干生物量 | 灌木 | 11 | 69.6 | 47.7562 | 14.3991 | 58.0 | 相等 | 2.9855 | 17 | 0.0083 | | 草本 | 8 | 18.2 | 8.2786 | 2.9269 | 16.2 | 不等 | 3.4942 | 10.8171 | 0.0052 |
|
|
|