桂西北喀斯特森林植物-凋落物-土壤生态化学计量特征

曾昭霞, 王克林, 刘孝利, 曾馥平, 宋同清, 彭晚霞, 张浩, 杜虎

Stoichiometric characteristics of plants, litter and soils in karst plant communities of Northwest Guangxi

ZENG Zhao-Xia,WANG Ke-Lin,LIU Xiao-Li,ZENG Fu-Ping,SONG Tong-Qing,PENG Wan-Xia,ZHANG Hao,DU Hu

表1 群落基本概况

Table 1 The basic characteristics of the forest communities

建群种 Constructive species 原生林 Primary forest 次生林 Secondary forest 圆果化香树 Platycarya longipes 伞花木 Eurycorymbus cavaleriei 青檀 Pteroceltis tatarinowii 圆叶乌桕 Sapium rotundifolium 八角枫 Alangium chinense 黄荆 Vitex negundo 裸岩率 Bare rock (%) 48 55 70 15 35 12 建群种高 (m) (平均值±标准误差) Height of constructive species (m) (mean ± SE) 4.92 ± 0.56 7.67 ± 0.63 8.88 ± 0.71 4.74 ± 0.45 3.56 ± 0.38 1.86 ± 0.23 郁闭度 Canopy closure 0.55 0.61 0.48 0.67 0.82 0.74 物种数 Species number 13 17 9 38 33 42 香农-威尔指数 Shannon-Winner index 3.22 3.14 3.48 1.67 1.91 1.54 均匀度 Evenness 0.83 0.77 0.89 0.58 0.62 0.55 辛普森指数 Simpson’s index 0.81 0.78 0.95 0.55 0.64 0.52