【摘要】 对浙江省沿海基岩质海岸防护林主要林分类型土壤抗冲性和理化性质进行测定,6种林分类型各土层抗冲指数都高于无林地,对于同一林分类型而言,0～20 cm土层的抗冲性指数均高于>20～40 cm土层,差距在1.30～0.07;相关分析表明,土壤抗冲指数与土壤容重、土壤有机质含量成显著相关,与土壤总空隙度成极显著相关,并建立了土壤抗冲指数与这3个因子之间的线性回归模型。采用聚类分析对不同林分类型土壤抗冲性能进行综合评价和分类,可分为4类,北江荛花檵木混交林为抗冲性能最强类,化香纯林为抗冲性能较强类,湿地松木荷混交林、湿地松枫香混交林、湿地松纯林、枫香纯林归为抗冲性能一般类,无林地为土壤渗透性较弱类。更多还原

【Abstract】 Investigations were implemented on soil antiscourability and physiochemical properties under six types of coastal protective forest in Zhejiang province.Soil antiscourability index of each soil layer of 6 forest types were higher than that of bared land,and in the same forest type,soil antiscourability index of 0-20 cm layer were higher than 20-40 cm one,with difference of 1.3-0.07.The correlation analysis indicated that soil antiscouribility index were significant correlated to bulk density and organic matter content,and was extremely significant correlated to soil total porosity.Linear regression models of soil antiscouribility index with soil physiochemical properties had been established.Cluster analysis showed that tested types could be classified into 4 groups.Group of mixed forest of Wikstroemia monnula with Loropetalum chinense had the strongest soil antiscouribility,followed by the group of pure Platycarya strobilacea forest,the group of pure Pinus elliottii plantation,pure Liquidambar formosana plantation,mixed forests of P.elliottii and Schima superba,mixed forest of P.elliottii and L.formosana,and the last group of bared land with poor soil antiscouribility.更多还原