基于土壤理化性状的北京市门头沟区废弃煤矿工程恢复效果分析

为了验证北京市门头沟区煤矿的土壤理化性状的改善状况，对门头沟煤矿未被干扰区域、修复区域、被破坏区域的土壤理化性状进行测定，并采用数学统计方法对其分析。结果表明，门头沟煤矿11个土壤理化性状在3种区域之间存在差异显著性，修复区域与未被干扰区域和被破坏区域的土壤理化综合效应均存在极显著差异，单因子假设检验发现该矿区土壤修复的限制因子，证实门头沟煤矿废弃地单靠自然力无法完成生态恢复。工程恢复手段显著加快了土壤修复速度，土壤有机质、碱解氮、有效磷、全氮含量是该矿区下一步恢复的重点目标。

Restoration Effect Analysis of Abandoned Coal Mine Engineering of Mentougou in Beijing Based on Soil Physicochemical Properties

In order to verify the improved situation,the experiment determined the soil physicochemical properties of undisturbed region,restored region and destroyed region of MTG（Mentougou） abandoned coal mine in Beijing.The mathematical statistical analysis displayed the significant difference of 11 soil physiochemical properties;there were extremely significant differences of soil physicochemical effect between restored region and undisturbed region,destroyed region;and also found the soil remediation limit factor with single factor hypothesis test.The experiment confirmed that it was unable to complete the restoration only with the help of natural force;the comprehensive effect analysis proved that the physicochemical property of soil combined effect was obviously improved.The single factor hypothesis test proved that it was the soil organic matter,alkali-hydrolyzed nitrogen,available potassium and total nitrogen that were the key recovery target in the future.