江汉平原连栽杨树人工林对土壤化学性质的影响  

Effects of Poplar Successive Plantation On Soil Chemical Characteristics in Jianghan Plain

作　　者：唐万鹏[1,2] 李吉跃[1,3] 漆良华[4] 胡兴宜[2] 崔鸿侠[2] 

机构地区：[1]北京林业大学资源与环境学院森林培育与保护教育部重点实验室,北京100083 [2]湖北省林业科学研究院,湖北武汉430079 [3]华南农业大学林学院,广东广州510642 [4]国际竹藤网络中心,北京100102

出　　处：《中南林业科技大学学报》2009年第5期72-76,共5页Journal of Central South University of Forestry & Technology

基　　金：国家"十一五"林业科技支撑项目(2006BAD03A15);湖北省重点项目(2006AA201B02);湖北省林业局重大项目(HLKJ2008-001)

摘　　要：采用空间代替时间的方法,研究了连栽对江汉平原杨树人工林土壤化学性质的影响.结果表明：与第1代林相比,第2代林土壤pH值有所提高,有机质、大量元素及微量元素等养分含量均有不同程度下降,其中pH值提高了2.42%,有机质降低了4.65%;连栽导致N、P、K大量元素下降了2.88%-12.20%,且对N影响最大,K次之,P最小,土壤N、P、K养分库有效性指数下降了3.82%;连栽导致微量元素下降了2.27%-53.37%,且对Zn影响最大,其后依次是Cu、Fe、Mn和S,土壤微量元素有效性综合指数降低了12.51%.The effects of poplar successive plantation in Jianghan Plain on soil chemical characteristics were studied by using space-for-time method.Results show that compared to the first generation forest（FGF）,the pH value of the second generation forest（SGF） has an increasing trend（pH value increasing 2.42%）,and its organic matter,macroelements and microelements all have a falling trend（organic matter decreasing 4.65%）;that successive plantation leads to the decrease of macroelements N,P and K（2.88%～12.20%） and its influence on N is the biggest,next comes P and then K;that it also leads to the decrease of N,P,K effective indexes（3.82%） in the soil nutrient pool;and that accordingly,soil microelements also decrease（2.27%～53.37%） whose influenced order is Zn Cu Fe Mn S and their effective indexes decrease 12.51%.

关 键 词：林学 连栽 杨树人工林 土壤化学性质 江汉平原 

分 类 号：S792.11[农业科学—林木遗传育种] S714.2[农业科学—林学]