作　　者： ; ;

机构地区： 广东省林业种苗与基地管理总站广东广州510173

出　　处： 《华南农业大学学报》 2010年第4期76-81,共6页

摘　　要： 为了合理利用土壤资源,实现森林的可持续发展,对3年生樟树Cinnamomum camphora、大叶女贞Ligustrumlucidum、观光木Tsoongiodendron odorum、山杜英Elaeocarpus sylvestris、乳源木莲Manglietia yuyuanensis和乐昌含笑Michelia chapensis6种阔叶树幼林的林地土壤特性进行了研究,并与杉木Cunninghamia lanceolata林地进行对比.结果表明,与杉木林地相比,各林分的土壤容重下降8%~26%,非毛管孔隙度增加41%~103%,总孔隙度增加3%~19%,自然含水量显著增加41%以上,毛管持水量增加4%~44%.除了大叶女贞和樟树林地外,其余林地的毛管孔隙略有下降.除了樟树和乳源木莲林地的速效P外,各林地的土壤pH、有机质、全N、全P、全K、碱解N、速效P和速效K含量比杉木林地有所提高.除了观光木林地的微生物数量外,各林地的细菌、真菌和放线菌数量增加,脲酶、磷酸酶和过氧化氢酶增加. In order to utilize soil sources reasonably and realize continuing development of forests,soil characteristics of six young broadleaved stands of Cinnamomum camphora,Ligustrum lucidum,Tsoongiodendron odorum,Elaeocarpus sylvestris,Manglietia yuyuanensis and Michelia chapensis were studied.Compared with Cunninghamia lanceolata woodland,soil bulk density of the six woodlands decreased by 8%-26%,non-capillary porosity increased by 41%-103%,total porosity increased by 3%-19%,natural moisture content increased over 41%,capillary moisture capacity increased by 4%-44%,capillary porosity decreased slightly except for C.camphora and L.lucidum woodlands.Compared to C.lanceolata woodland,the pH values,organic matter,total N,total P,total K,alkalized N,available P and available K of the woodlands increased except for available P of C.camphora and M.yuyuanensis woodlands,and the numbers of bacteria,fungi and actinomyces,and activities of urease,acid phosphatase and catalase increased except for microorganism number of T.odorum woodland.

关 键 词： 阔叶幼林 土壤物理性质 土壤养分 微生物 酶

领　　域： [农业科学]