摘要
为探明襄汾县铁尾矿库溃坝事件影响区近10年来土壤质量的恢复状况,为该区土壤质量的恢复治理提供理论依据。以襄汾县溃坝事件影响区为研究对象,对其上游废弃地、中下游农田以及对照区进行对比,分析不同恢复方式下土壤理化性质的差异。结果表明:距尾矿库溃坝址越远,土壤含水量和有机质含量越高;各样地pH差异不明显,有一定改良并趋于中性;速效养分含量对照样地显著高于废弃地和溃坝影响的农田区,废弃地的样地A与受溃坝影响农田区的样地D和样地E的速效钾和速效磷含量均存在显著差异;全量养分含量中,全磷为对照样地F显著高于废弃地和受溃坝影响的农田区,全钾含量为对照样地与受溃坝影响农田区差异显著,与废弃地差异不显著。溃坝影响区土壤质量与对照区仍有明显差异,并且距尾矿坝址越远,受到的影响相对较小,后期恢复效果也较好,多年种植小麦的溃坝影响农田区的有机质含量比只有稀疏低矮核桃树和杂草的废弃地高。
The soil physicochemical properties of waste land at upper reaches and farmland area at middle and lower reaches in dam break coverage area under different restoration patterns were compared with soil physicochemical properties in control area to verify the restoration status of soil quality for nearly10 years and provide the theoretical basis for restoration and control of soil quality in dam break coverage area of Xiangfen County.Result：The soil water and organic matter content of waste land and farmland area in dam break coverage area is increased with increase of distance away from the tailing dam site.There is no obvious difference in pH among different sample plots and the pH value of different sample plots under different restoration patterns tends to neutral.The rapidly available nutrients content of soil in control area is higher than in soils of waste land and farmland area in dam break coverage area significantly.There is a significant difference in rapidly available K and P content between Sample Plot A of waste land and Sample Plot D and E of farmland area.Total P content of Sample Plot F in control area is significantly higher than soils of waste land and farmland area in dam break coverage area.There is a significant difference in total K content between sample plots in control area and farmland area in dam break coverage area but no obvious difference in total K content between sample plots in control area and waste land in dam break coverage area.There is an obvious difference in soil quality between soils in dam break coverage area and control area and the restoration effect of the soil away from the tailing dam site is better.The organic matter content of farmland area in dam break coverage area after planting wheat for many years is only higher than the waste land with sparse short walnut trees and weeds.
作者
辛未冬
谢聪聪
XIN Weidong;XIE Congcong(College of Geographical Science,Shanxi Normal University,Lin fen,Shanxi 0410011,China)
出处
《贵州农业科学》
CAS
2018年第6期94-97,共4页
Guizhou Agricultural Sciences
基金
国家自然科学基金青年项目(41701287
41301304)
关键词
溃坝事件
土壤
理化性质
襄汾县
山西
dam break
soil
physicochemical property
Xiangfen County
Shanxi
