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红壤侵蚀区不同植被下土壤理化性质的分布特征 被引量:2

Distribution Characteristics of Soil Physical and Chemical Properties Under Different Vegetations in Red Soil Erosion Area
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摘要 为研究侵蚀红壤区生态系统恢复过程中土壤理化性质分布特征,通过选取红壤侵蚀区罗汉松、玉兰、红枫、茶花、梅花、竹柏6种植被下土壤为研究对象,分析其土壤理化性质。结果表明:(1)土壤容重与最大持水量、毛管持水量、最小田间持水量、非毛管孔隙、总孔隙均达到显著或极显著水平的负相关关系。茶花土壤容重最大,土壤孔隙、持水能力较差,梅花、竹柏土壤容重较小,土壤孔隙、持水能力较好;(2)土壤pH介于4.60~5.20,呈酸性。竹柏土壤pH最小,酸性最强,梅花0~20cm土层土壤pH最大,酸性较弱;(3)植被对土壤养分具有表聚作用。土壤有机质含量为2.27~20.02g·kg^(-1)。全氮与有机质含量呈极显著正相关,玉兰土壤磷素含量较高,速效钾主要集中在表层土壤;(4)土壤综合肥力指标值分析结果表明,玉兰植被下土壤质量最高,恢复效果最好。不同植被下土壤理化性质表现出明显的差异性,玉兰是改良土壤结构、提升土壤肥力的优势植被品种。 The soil collected from 6 types of vegetation inclued Podocarpus macrophyllus,Yulania denudate,Acer palmatum'Atropurpureum',Camellia japonica,Armeniaca mume,Nageia nagi were studied and their soil physical and chemical properties were analyzed,in order to study the distribution characteristics of soil physical and chemical properties during the restoration process of ecosystem in eroded red soil region.The results showed that(1)Soil bulk density had a significant or extremely significant level of negative correlation with maximum water holding capacity,capillary water holding capacity,minimum field water holding capacity,non-capillary pores and total pores.Camellia japonica had the largest bulk density,poor soil porosity and water holding capacity,and the soil bulk density of Armeniaca mume and Nageia nagi cypress was small,and the soil pore and water holding capacity were better.(2)The soil pH ranged from 4.60 to 5.20,which was acidic.Nageia nagi soil had the lowest pH and the strongest acidity.The 0-20 cm soil layer of Armeniaca mume had the highest pH and the weak acidity.(3)The vegetation had an effect on the accumulation of soil nutrients.The soil organic matter content decreased with the increase of soil depth,and the range was 2.27-20.02 g·kg-1.There was a significant positive correlation between total nitrogen and organic matter content.Yulania denudata soil showed higher phosphorus content,and available potassium was mainly concentrated in surface soil.(4)Analysis of soil comprehensive fertility index values showed that the soil quality collected from Yulania denudata was the highest,and the recovery effect was also the best.The physical and chemical properties of soil collected from 6 types of vegetation showed obvious differences.Yulania denudata was the dominant vegetation variety to improve soil structure and enhance soil fertility.
作者 赵壮 邹双全 黄昭昶 王晓朋 胡坤 朱巧莲 童晨晓 毛艳玲 ZHAO Zhuang;ZOU Shuang-quan;HUANG Zhao-chang;WANG Xiao-peng;HU Kun;ZHU Qiao-lian;TONG Chen-xiao;MAO Yan-ling(College of Resource and Environment,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002, China;University Key Lab of Soil Ecosystem Health and Regulation in Fujian,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;Fujian Colleges and Universities Engineering Research Institute of Conservation&Utilization of Natural Bioresources,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China)
出处 《福建农业学报》 CAS 北大核心 2018年第10期1090-1096,共7页 Fujian Journal of Agricultural Sciences
基金 福建省科技厅高校产学合作项目(KJb16003A) 福建省科技重大专项专题(2017NZ0001) 福建农林大学科技创新专项基金项目(CXZX2017226 CXZX2017116)
关键词 红壤 土壤侵蚀 植被 土壤理化性质 red soil soil erosion vegetation soil physical and chemical properties
作者简介 赵壮(1993-),男,硕士,主要从事土壤碳氮循环研究(E-mail:zhaozhuang1124@foxmail.com);通讯作者:毛艳玲(1970-),女,教授,博士生导师,主要从事土壤碳氮循环研究(E-mail:fafum@126.com)。
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