喀斯特高原峡谷区花椒林土壤质量评价  

Evaluation of fertility characteristics of Zanthoxylum bungeanum forest soil in karst plateau gorge areas

作　　者：李开萍 刘子琦 李渊 余逍 高阿娟 LI Kaiping;LIU Ziqi;LI Yuan;YU Xiao;GAO Ajuan(School of Karst Science,Guizhou Normal University,Guiyang,Guizhou 550001,China;State Engineering Technology Institute for Karst Desertification Control,Guiyang,Guizhou 550001,China)

机构地区：[1]贵州师范大学喀斯特研究院,贵州贵阳550001 [2]国家喀斯特石漠化防治工程技术研究中心,贵州贵阳550001

出　　处：《森林与环境学报》2020年第4期391-397,共7页Journal of Forest and Environment

基　　金：国家“十三五”重点研发计划课题“喀斯特高原石漠化综合治理生态产业模式与技术集成示范”(2016YFC0502607);贵州省科技计划重大专项“石漠化防治生态衍生产业扶贫模式与技术示范”(黔科合平台人才[2017]5411);贵州省科技计划项目“喀斯特地区经济林下水土-养分流失机制与调控技术研究”(黔科合平台人才[2017]5726-28号)。

摘　　要：为研究喀斯特高原峡谷不同立地环境花椒林土壤肥力特征,以贵州省喀斯特高原峡谷石漠化综合治理区坡改梯、溶沟、洼地花椒林土壤为研究对象,对比分析坡改梯、溶沟、洼地花椒林土壤理化性质特征,利用数理统计方法确定最小数据集并评价花椒林土壤质量。结果表明:研究区花椒林土壤质量评价的最小数据集包括土壤容重、田间持水量、总孔隙度、pH值、有效磷(AP)含量、速效钾(AK)含量、有机质(OM)含量和全氮(TN)含量等8个土壤指标,土壤质量呈现出洼地>溶沟>坡改梯的规律。土壤OM、水解氮(AN)、AK、全磷(TP)和AP含量均呈现出洼地>溶沟>坡改梯的规律,田间持水量、毛管持水量和总孔隙度也呈现出同样的规律;而土壤容重和p H值则呈现出坡改梯>溶沟>洼地的规律,土壤TN和全钾(TK)含量均呈现出溶沟>洼地>坡改梯的规律。A study was conducted to determine the fertility characteristics of Zanthoxylum bungeanum forest soil at three different sites(depression,lapies,and terraced slope cropland)in plateau gorge regions of a comprehensively restored karst rocky desertification area in Guizhou.The physical and chemical properties of Zanthoxylum bungeanum forest soil at the three different sites were determined and compared.Moreover,a minimum data set was derived using mathematical statistics,and the quality of Zanthoxylum bungeanum forest soil was evaluated.The minimum data set for evaluating the quality of Zanthoxylum bungeanum forest soil in the study area included soil bulk density,field moisture carrying capacity,total porosity,pH,and available phosphorus(AP),available potassium(AK),organic matter(OM),and total nitrogen(TN)content.The quality of Zanthoxylum bungeanum forest soil was in the order of depression>lapies>terraced slope cropland.OM,available nitrogen(AN),AK,total phosphorus(TP),and AP content,field moisture carrying capacity,capillary moisture holding capacity,and total porosity of Zanthoxylum bungeanum forest soil were in the order of terraced slope cropland>lapies>depression.Soil bulk density and pH of Zanthoxylum bungeanum forest soil were in the order of depression>lapies>terraced slope cropland.TN and total potassium(TK)content of Zanthoxylum bungeanum forest soil was in the order of lapies>depression>terraced slope cropland.

关 键 词：土壤质量评价 最小数据集 花椒林 喀斯特高原峡谷区 

分 类 号：S157.1[农业科学—土壤学]