【作者】 赵振磊； 许景伟； 李传荣； 王月海； 刘云；

【Author】 ZHAO Zhenlei1,XU Jingwei2,LI Chuanrong1,WANG Yuehai2,LIU Yun1 (1.College of Forestry,Shandong Agriculture University,Tai ’an 271018,Shandong,China;2.The Research Institute of Forestry in Shandong,Ji’nan 250014,Shandong,China)

【机构】 山东农业大学林学院； 山东省林业科学研究院；

【摘要】 在黄河三角洲盐碱地,对刺槐臭椿、刺槐白榆、刺槐白蜡3种混交林的盐碱度、容重和孔隙度状况、土壤入渗性能等土壤指标进行了研究。结果表明:(1)除刺槐白蜡混交林土壤表层有一定的返盐现象外,不同刺槐混交林均具有一定的压盐抑盐效果,且pH值多随土壤深度的增加而升高;(2)刺槐混交林降低土壤容重,增加土壤孔隙度的效应均好于刺槐纯林,更好于无林地;(3)不同刺槐混交林土壤饱和蓄水量、毛管蓄水量均表现为刺槐白蜡混交林>刺槐白榆混交林>刺槐臭椿混交林>刺槐纯林>无林地,3种刺槐混交林的土壤饱和蓄水量分别比刺槐纯林高5.82%、2.69%、1.05%,分别比无林地高10.41%、6.88%、5.18%;(4)不同刺槐混交林均能提高土壤入渗性能,并表现出一定的差异,但均大于刺槐纯林,更明显好于无林地。更多还原

【Abstract】 Characteristics of soil pH value,soil salt content,soil density and porosity,soil infiltration of three kinds of mixed lands,including black locust and Tree of heaven,black locust and Elm,and black locust and Chinese ash,are researched in saline-alkali soil of the Yellow River Delta.Results indicate that: (1) Addition to black locust and Chinese ash with a certain return to the soil surface salt phenomenon,different kinds of mixed stands of black locus have obvious function of controlling soil salinity and alkaline content,and soil pH value increased with the increment of soil depth.(2) The soil density decreased,and soil total porosity increased with different mixed stands of black locus,and these indexes are better than these of the pure forest of black locust and non-forest land.(3) Characteristics of soil saturated water content,soil capillary porosity water-holding capacity show this order: black locust and Chinese ash>black locust and Elm>grassland>black locust and tree of heaven>the pure forest of black locust>non-forest land,and compared with the pure forest of black locust,soil saturated water content enlargement is 5.82%、2.69%、1.05%,and compared with non-forest land,the value is 10.41%、 6.88%、5.18%.(4) Different kinds of mixed stands of black locus can improve soil infiltration capacity,and show some differences,but were greater than locust pure forest,and also significantly better than non-forest land.更多还原