乌海市平沟煤矸石山小地形土壤养分分析  

Analysis of Soil Nutrients in Small Topography of Pinggou Coal Gangue Mountain in Wuhai City

作　　者：郑雯丹 许丽 张丽娜 杨宇平 刘莹 丰菲 ZHENG Wendan;XU Li;ZHANG Lina;YANG Yuping;LIU Ying;FENG Fei(College of Desert Control Science and Engineering of Inner Mongolia Agricultural University,Hohhot 010018,Inner Mongolia,China)

机构地区：[1]内蒙古农业大学沙漠治理学院,内蒙古呼和浩特010018

出　　处：《内蒙古林业调查设计》2020年第2期100-104,共5页Inner Mongolia Forestry Investigation and Design

基　　金：国家重点研发计划项目“西北干旱荒漠区煤炭基地生态安全保障技术”(2017YFC0504400);“采煤迹地立地条件类型划分与植被演替规律研究”(2017YFC0504402)。

摘　　要：文章以乌海市平沟煤矸石山上平台和边坡两种不同小地形上的土壤为研究对象,通过野外调查取样和室内分析化验,研究煤矸石山两种小地形对土壤养分的恢复情况。结果表明,土壤有机质、全N、碱解N含量在两种不同小地形上表现为边坡>平台,土壤P素、K素含量表现为平台>边坡,总体而言,边坡上土壤养分恢复效果比平台好。平台和边坡上土壤养分含量在不同土层深度中均表现为:0~20 cm层>20~40 cm层。通过参考土壤养分分级与丰缺度标准,目前土壤养分丰缺度主要呈现出缺或极缺状态。Taking the soil on the platform and slope of Pinggou coal gangue mountain in Wuhai City as the research object,through field investigation,sampling and laboratory analysis,this paper studies the restoration of soil nutrients by two kinds of small topography.The results indicated that the content of soil organic matter,total N and alkali-dissolved N showed slope>platform on two different small topography,and soil P and K content showed platform>slope.In general,the soil nutrient recovery effect on the slope is better than that on the platform.The content of soil nutrients on the platform and slope in different depth showed as follows:0~20 cm layer>20~40 cm layer.By referring to the standard of soil nutrient classification and abundance,the soil nutrients are mainly deficient or extremely deficient at present.

关 键 词：土壤养分 小地形 植被恢复 平沟煤矿 

分 类 号：S714.8[农业科学—林学]