西双版纳热带雨林林窗空间分布格局及其特征数与林窗下植物多样性的相关性

李强,王彬,邓云,林露湘,达佤扎喜,张志明

Correlation between spatial distribution of forest canopy gaps and plant diversity indices in Xishuangbanna tropical forests

Li Qiang,Wang Bin,Deng Yun,Lin Luxiang,Dawa Zhaxi,Zhang Zhiming

表2 4个样地的林窗空间特征指数

Table 2 Spatial characteristic index of the canopy gaps of four forests

44 km样地 44 km plot 茶厂后山样地 Tea factory backhill plot 勐仑水库样地 Menglun Reservoir plot 大平掌样地 Dapingzhang plot 数量比例 Quantity ratio 小林窗 Small gap 67.50% 66.70% 53.80% 60.40% 大林窗 Large gap 32.50% 33.30% 46.20% 39.60% 面积比例 Area ratio 小林窗 Small gap 24% 30.10% 14.10% 23.30% 大林窗 Large gap 76% 69.90% 85.90% 76.70% 空隙率 Gap fraction 小林窗 Small gap 2.90% 1.80% 1.81% 3.80% 大林窗 Large gap 9.20% 4.20% 11.05% 12.60% 平均最小邻近距离 Mean Euclidean near- neighbor distance (ENN) 林窗 Gap 10.80 10.02 11.11 8.49 小林窗 Small gap 11.45 9.74 16.28 9.57 大林窗 Large gap 17.16 17.89 18.82 14.18