摘要
为揭示植被恢复对磷矿土壤质量的影响,以昆阳磷矿人工林植被恢复样地的土壤为研究对象,采用综合指数法和加权求和法对土壤养分质量进行综合评价。结果表明:(1)昆阳磷矿矿区废弃地不同恢复林地的土壤养分含量存在较显著差异,与未进行植被恢复的废弃地土壤相比,各养分指标含量均显著提高;(2)p H和速效钾对土壤质量的作用分值较小,是影响研究区土壤质量的限制性因子;(3)有机质含量的权重最大,速效氮和速效钾次之;(4)7种植被类型的土壤养分质量综合指数均高于废弃地土壤,大小依次为旱冬瓜+圣诞树林>栓皮栎林>蓝桉林>圣诞树林>旱冬瓜林>直干桉林>藏柏林,其中,旱冬瓜+圣诞树林和栓皮栎林的质量指数均大于0.8,说明这2种林分的表层土壤质量较优,蓝桉林和圣诞树林的质量指数在0.6-0.8之间,说明此2种林分土壤的综合质量良好,旱冬瓜林、直干桉林和藏柏林土壤的综合质量处于中等水平。
In order to reveal the effect of vegetation restoration on the soil quality in Phosphate Mine area of Kunyang,the soil nutrient indices of the vegetation recovery plots were analyzed,and the comprehensive evaluation of soil nutrient quality was carried out by comprehensive index method and weighted summation method.The results showed that:(1)There was a significant difference in soil nutrient content in the restored forestlands of abandoned mining land in Kunyang.Compared with the abandoned soil without vegetation restoration,the content of each nutrient index increased significantly.(2)The pH and available K in soil quality score,the smaller is the restrictive factor of affecting the quality of soil in the study area.(3)The organic matter content has the highest weight,followed by available nitrogen and available potassium.(4)The integrated index of soil nutrient content of the seven vegetation types were higher than that of waste and abandoned lands,and the order was Alnus nepalensis+Acacia dealbata>Quercus variabilis>Eucalyptus globulus>Acacia dealbata>Alnus nepalensis>E.maideni>Cupressus torulosa,The quality index of both the Alnus nepalensis+Acacia dealbata and Quercus variabilis were higher than 0.8,indicating that the surface soil quality of the two stands was better,the quality index of the Eucalyptus globulus and Acacia dealbata ranged from 0.6 to 0.8,indicating that the combination of the two stands was good,Alnus nepalensis,E.maideni and Cupressus torulosa were at a medium level.
作者
赵川
和丽萍
李贵祥
柴勇
邵金平
ZHAO Chuan;HE Li-ping;LI Gui-xiang;CHAI Yong;SHAO Jin-ping(Yunnan Academy of Forestry,Kunming Yunnan 650201,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2018年第2期106-111,共6页
Journal of West China Forestry Science
基金
国家自然科学基金项目(41361076)
关键词
隶属度函数
土壤质量评价
植被恢复类型
昆阳磷矿
membership function
soil quality evaluation
vegetation restoration types
Kunyang phosphorite mine
