桂林岩溶石山青冈栎群落土壤相关性研究

Study on Soil Correlation of Quercus glauca Community in Karst Stone Mountain of Guilin

为了探讨岩溶石山土壤养分及其分布状况,以广西桂林市郊的演坡山、阳朔县的白沙镇和碑头村的青冈栎群落的土壤理化性质为研究对象,对3个采样点的青冈栎群落土壤理化性质是否存在差异以及各理化性质的相关性进行研究。单因素方差分析和多重比较表明:土壤有机质、土壤全磷、土壤有效钾在演坡山、白沙镇和碑头村间无显著差异;土壤含水量、土壤有效磷和土壤pH在3个采样点存在显著差异。Pearson相关性分析表明:土壤有机质与土壤有效钾呈极显著正相关,与土壤全磷呈显著正相关;土壤全钾与土壤有效钾呈极显著正相关,与pH呈极显著负相关,与土壤有效磷呈显著负相关;土壤pH与土壤有效磷呈显著正相关,与土壤全磷呈极显著正相关。

To study the soil nutrients and their distribution in Karst stone mountains,the soil physicochemical properties of Quercus glauca community distributed in Yanpo Mountain,Baisha Town and Beitou Village in Guilin City,Guangxi were studied.Single factor variance analysis,multiple comparison method and correlation analysis were used to study the difference of soil physicochemical properties of Q.glauca community in three sampling sites and the correlation of each physicochemical property.One-way ANOVAS and multiple comparisons(Turkey-Kramer HSD)showed that,soil organic matter,soil total phosphorus and available potassium of Q.glauca community in Yanpo Mountain,Baisha Town and Beitou Mountain were not significantly different.There were significant differences in soil water content,soil total potassium,and soil pH among the three sampling sites.Pearson correlation analysis showed that,soil organic matter was positively correlated with soil available potassium,and positively correlated with soil total phosphorus;soil total potassium was positively correlated with soil available potassium,negatively correlated with pH and negatively correlated with soil available phosphorus;soil pH was positively correlated with soil available phosphorus,and positively correlated with soil total phosphorus.