萧氏松茎象发生与湿地松林地枯落物及土壤物理性质的关系  

The Relationship between Physical Characteristics of Litterfall and Soil in Slash Pine Plantation and the Occurring of Hylobitelus xiaoi Zhang

作　　者：唐艳龙[1] 杨清培[2] 温小遂 王丽娜[1] 何小龙[2] 余林[1] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所,北京100091 [2]江西农业大学林学院,江西南昌330045 [3]江西省林业有害生物防治检疫局,江西南昌330077

出　　处：《林业科学研究》2010年第4期554-559,共6页Forest Research

基　　金：国家林业局重点课题资助项目(2001-22);江西省科委攻关项目;江西省自然科学基金(2007GZN0510)

摘　　要：对萧氏松茎象不同危害程度湿地松林地的枯落物及土壤物理性质比较研究结果表明:枯落物及腐殖质层厚度对萧氏松茎象危害程度的影响最大,其次是枯枝落叶干质量和土壤含水量,枯枝落叶含水率和吸水率影响最小,即枯落物及腐殖质层越厚,枯枝落叶越多,土壤湿度越大的林区,萧氏松茎象发生越重。单因素分析表明:枯落物及腐殖质层厚度、枯枝落叶干质量和土壤质量湿度与有虫株率的相关关系均达到显著水平。萧氏松茎象有虫株率火炬松和马尾松林发生林地明显低于湿地松发生林地。与不发生林地相比,发生林地的土壤更湿润,土壤的保水能力更好,孔隙度更高,石砾含量相对较低。The litters and soil physical characteristics of the forest site damaged to certain extents by Hylobitelus xiaoi were compared and analyzed.The results showed that the thickness of litterfall had the most effects on the damage of H.xiaoi,followed by the dry weight of litterfall and the soil weight,and the moisture content rate and water absorbing rate of litterfall had the least effects.That meant that the H.xiaoi damaged more heavily at the sites with thicker litterfall layers,more litterfall amounts and higher soil moisture content.Single factor analysis indicated that the thickness and dry weight of litterfall and soil moisture content were obviously correlated with the rate of insect-attacked tree.The rate of insect-attacked tree in Pinus taeda and P.massoniana plantations were significantly lower than that in P.elliottii plantations.Compared with no-attacked forest site,the insect-attacked sites had higher soil moisture,better water-holding capacity,higher porosity and less gravels.

关 键 词：萧氏松茎象 枯落物 土壤性质 湿地松 

分 类 号：S791.246[农业科学—林木遗传育种]