CAJ | 학술논문

煤炭开采引发土地沉陷,耕地资源严重破坏,土地复垦是恢复耕地的重要措施。开展矿区复垦土壤养分变化研究及评价,对于指导矿区土地复垦工作有着重要意义。以淮南张集矿区不同复垦年限的土壤为对象,系统研究了土壤养分的变化。结果表明：随着复垦时间的增加,土壤的有机质、全氮、速效磷和速效钾呈现增加趋势;复垦土壤在垂直层次上表现出随深度的增加,土壤有机质、全氮、速效磷和速效钾有下降的趋势;以正常耕地土壤养分水平作为评价标准时,复垦土壤养分恢复指数呈现增加趋势。
매탄개채인발토지침함,경지자원엄중파배,토지복은시회복경지적중요조시。개전광구복은토양양분변화연구급평개,대우지도광구토지복은공작유착중요의의。이회남장집광구불동복은년한적토양위대상,계통연구료토양양분적변화。결과표명：수착복은시간적증가,토양적유궤질、전담、속효린화속효갑정현증가추세;복은토양재수직층차상표현출수심도적증가,토양유궤질、전담、속효린화속효갑유하강적추세;이정상경지토양양분수평작위평개표준시,복은토양양분회복지수정현증가추세。
Coal mining leads to land subsidence and arable land damage.Land reclamation is an important measure for arable land restoration.To study and assess the variability in fertility of reclaimed soil is of great significance to direct the reclamation and reutilization of mining subsided land.The variability of fertility of reclamation soil in Zhangji coal mining area located at Huainan city were studied.The results showed that： the contents of organic matter,total nitrogen,Olsen-phosphorus and available K increased with the extension of time,while the soil fertility reduced with the depth of reclamation soil increasing.Took the soil fertility level of normal arable land as assessment standards,the fertility restoration index of reclamation soil indicated an upward trend with time extending.