海南岛霸王岭热带云雾林雨季的环境特征

龙文兴, 丁易, 臧润国, 杨民, 陈少伟

Environmental characteristics of tropical cloud forests in the rainy season in Bawangling National Nature Reserve on Hainan Island, South China

LONG Wen-Xing, DING Yi, ZANG Run-Guo, YANG Min, CHEN Shao-Wei

图3 热带山地常绿林(TMEF)和热带山顶矮林(TMDF)样方随环境变量变化的PCA排序图。AK, 有效钾; Alt, 海拔高度; AN, 速效氮; AP, 有效磷; CER, 岩石裸露比例; HT, 腐殖质厚度; OM, 有机质; PAR, 光合有效辐射; RH, 日平均空气相对湿度; Slo, 坡度; ST, 土壤厚度; Tem, 日平均空气温度; TK, 全钾; TN, 全氮; TP, 全磷。

Fig. 3 Biplot of principal component analysis (PCA) showing changes in environmental variables across tropical montane evergreen forest (TMEF) and tropical montane dwarf forest (TMDF).AK, available potassium; Alt, altitude; AN, available nitrogen; AP, available phosphorus; CER, coverage of exposed rock; HT, humus thickness; OM, organic matter; PAR, photosynthetically active radiation; RH, mean daily air relative humidity; Slo, slope gradient; ST, soil thickness; Tem, mean daily air temperature; TK, total potassium; TN, total nitrogen; TP, total phosphorus.