华北石质山区不同水土保持树种对土壤质量的影响  

Effects of Different Soil and Water Conservation Species on Soil Quality in Lithoid Hilly Area of North China

作　　者：陈家林[1] 裴丙 刘红恩[2] 付梦瑶 郭二辉[1] 杨喜田[1] CHEN Jialin;FU Mengyao;GU0 Erhui;YANG Xitian;PEI Bing;LIU Hongen(College of Forestry, Henan Agricultural University, Zhengzhou 450002, China;College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China)

机构地区：[1]河南农业大学林学院,郑州450002 [2]河南农业大学资源与环境学院,郑州450002

出　　处：《林业资源管理》2016年第2期81-86,97,共7页Forest Resources Management

基　　金：国家自然科学基金(31570613);国家自然科学基金(41501331);河南省博士后科研基金(201504)

摘　　要：为探讨不同水土保持树种对土壤质量的影响,以华北石质山区3种30a生典型树种刺槐、侧柏和栓皮栎林为对象,研究各人工林地及对照样地的土壤理化性质,并采用主成分分析法计算各样地土壤质量指数。结果表明:1)侧柏林种植对土壤粘粒体积分数和孔隙度的提高作用最大,刺槐林最大限度地增加了土壤粉粒及含水率,栓皮栎林对土壤硬度降低作用最大;2)侧柏林对土壤有机质、全氮、碱解氮的积累作用最大,刺槐林对土壤速效磷增加作用最好,而栓皮栎林则有利于土壤速效钾的累积;3)综合土壤物理性质和化学性质得到侧柏、刺槐和栓皮栎林地土壤质量指数分别为1.42,0.99,0.53。刺槐、侧柏、栓皮栎等3种树种均显著提高了土壤质量,且不同水土保持林土壤质量之间存在显著差异。建议在华北石质山区水土保持林构建中,可以选择侧柏作为先锋树种。To analyze the effects of different soil and water conservation species on soil quality,three typical 30-year-old soil and water conservation {oresis ( Robiniap seudoacacia ,Platycladus orientalis and Quercusvariabili) in the lithoid hilly area of North-China were selected to study the soil physico-chemical properties and assessed the integrated soil fertility index based on principal components analysis. The results showed that : (1) Platycladus orientalis had the best restoration effect on soil clay content and porosity,but Robinia pseudoacacia has a significant impact on soil silt content and moisture content. The improvement function on soil hardness of Quercus variabilis is the largest. (2) Platycladus orientalis was the most effective to improve soil organic matter, total nitrogen and available nitrogen. Robinia pseudoacacia was conducive to increase soil available phosphorus and Quercus variabilis was beneficial to accumulate soil available potassium. (3)The soil physical,chemical properties were integrated into a soil quality index,which was higher in Platycladus orientalis ( 1. 42 ) than in Robiniap seudoacacia forest ( 0. 99 ) and Quercus variabilis forest(0. 53). Different tree species could remarkably improve the quality of soil with significant differences. Platycladus orientalis was suggested to be a better tree specie to improve soil quality than Robinia pseudoacacia and Quercus variabilis in the lithoid hilly area of North China.

关 键 词：华北石质山区 水土保持林 土壤理化性质 土壤质量 

分 类 号：S714.2[农业科学—林学] S158