采煤塌陷地复垦方式对土壤理化特性影响研究  

Effects of Two Reclamation Methodologies of Coal Mining Subsidence on Soil Physical and Chemical Properties

作　　者：焦晓燕[1] 王立革[1] 卢朝东[1] 郜春花[1] 董二伟[1] 刘鑫[1,2] 

机构地区：[1]山西省农业科学院土壤肥料研究所,山西太原030031 [2]山西大学生物工程学院,山西太原030031

出　　处：《水土保持学报》2009年第4期123-125,145,共4页Journal of Soil and Water Conservation

基　　金：国家科技支撑计划(2006BAC09B02);山西省重大科技攻关项目(2006061099-01-02)

摘　　要：研究了采煤塌陷区适农土地表土剥离复垦和混推复垦对复垦后土壤理化性质的影响。结果表明：与复垦前比较,两种方式复垦后表层土壤养分含量均有所下降;与混推复垦比较,剥离复垦后表土养分含量稍高,但其养分含量变异也较大。由于复垦过程中机械压实作用,复垦后土壤容重和硬度增大、孔隙度减小;剥离复垦后0~20 cm耕层土壤容重、土壤硬度明显低于混推复垦,前者的土壤孔隙度明显高于后者（p〈0.05）。混推复垦土壤剖面毛管持水量高于剥离复垦。The effects of soil-handling operations for coal mining subsidence on soil physical and chemical properties were investigated in this paper. The soil is stuiable for agriculture. Soil-handling operations involved two methodologies： topsoil was stripped and replaced immediately onto a rehabilitation area （TSR） and soil horizon was mixed during soil handling （SHM）. The study showed that whichever soil-handling methology was employed, topsoil nutrients content was diminished compared with that prior to reclamation. TSR resulted in a relative high nutrient content in 0--20 cm, with a larger spatial variability than SHM did. Lower soil bulk density, hardness and higher porosity were brought about by TSR, compared with those of SHM （p〈0.05） ; whereas the latter caused a higher capillary water holding capacity than former.

关 键 词：采煤塌陷 复垦方式 土壤理化性质 

分 类 号：S151.9[农业科学—土壤学]