摘要
为了揭示草原露天矿区未损毁地与复垦地重构土壤碳氮比之间的差异及造成差异的原因,以国家能源集团北电胜利露天煤矿为例,采用方差分析和相关分析的方法,研究未损毁地与复垦地土壤碳氮比的变化及影响因素。结果表明:矿区北排土场土壤碳氮比与未损毁地差异显著;矿区土壤碳氮比与土壤含水率和土壤有机质呈极显著正相关,与速效钾呈显著正相关;随着复垦年限的增加,实际复垦8年的北排土场土壤碳氮比要高于复垦4年的南排土场。
In order to reveal the difference between the carbon-nitrogen ratio in the reconstructed soil of the grassland open-pit mine and the reclaimed land and the reasons for the difference,taking Shengli Open-pit Mine of National Energy Group as an example,this article uses the methods of variance analysis and correlation analysis to study the change and influencing factors of the carbon-nitrogen ratio in the soil of the undamaged land and the reclaimed land.The results show that:the ratio of soil carbon to nitrogen in the north dump of the mining area is significantly different from that in the undamaged land;the ratio of soil carbon to nitrogen in mining area is significantly positively correlated with soil moisture content and soil organic matter,and is significantly positively correlated with available potassium;with the increase of reclamation years,the ratio of soil carbon and nitrogen in the north dump reclaimed for 8 years is higher than that in the south dump reclaimed for 4 years.
作者
王玲玲
况欣宇
曹银贵
黄雨晗
王凡
白中科
WANG Lingling;KUANG Xinyu;CAO Yingui;HUANG Yuhan;WANG Fan;BAI Zhongke(School of Land Science and Technology,China University of Geosciences,Beijing 100083,China;Key Lab ofLand Consolidation,Ministry of Natural Resources,Beijing 100035,China)
出处
《露天采矿技术》
CAS
2020年第6期8-12,共5页
Opencast Mining Technology
基金
国家重点研发计划资助项目(2016YFC0501105-2)。
关键词
土地复垦
土壤重构
碳氮比
复垦年限
有机碳
land reclamation
soil reconstruction
carbon-nitrogen ratio
year of reclamation
organic carbon
