CAJ | 학술논문

为探讨不同放牧强度下温性荒漠草原土-草体系中微量元素锰和铜的变化，对土壤、牧草中锰和铜含量进行了测定。结果表明，除中牧区以外，其他放牧区土壤锰含量随季节的推移极显著下降(P <0.01)，夏季牧区极显著高于其他放牧区，冬春季和秋季则轻牧区极显著高于其他放牧区(P <0.01)。除对照外，轻牧，中牧和重牧区土壤铜含量夏季极显著高于其他两季(P <0.01)，冬春季和秋季不放牧或轻牧区极显著高于中牧和重牧区(P <0.01)。各放牧区牧草中锰和铜(除中牧区)含量均冬春季显著或极显著高于夏秋两季，同一季节不同放牧区则各有变化。
위탐토불동방목강도하온성황막초원토-초체계중미량원소맹화동적변화，대토양、목초중맹화동함량진행료측정。결과표명，제중목구이외，기타방목구토양맹함량수계절적추이겁현저하강(P <0.01)，하계목구겁현저고우기타방목구，동춘계화추계칙경목구겁현저고우기타방목구(P <0.01)。제대조외，경목，중목화중목구토양동함량하계겁현저고우기타량계(P <0.01)，동춘계화추계불방목혹경목구겁현저고우중목화중목구(P <0.01)。각방목구목초중맹화동(제중목구)함량균동춘계현저혹겁현저고우하추량계，동일계절불동방목구칙각유변화。
In order to find out the variation of the trace elements (Mn and Cu)in soil-forage-livestock sys-tem of temperate desert grassland under different grazing intensities (CK,zero grazing;LG,light grazing;MG, moderate grazing;HG,heavy grazing),the content of Mn and Cu in soil,grass and serum of Tibet lamb were de-termined.The results showed that the Mn contents in soil decreased significantly with season going (P <0.01). It was significantly higher in MG than in other groups in summer while it was significantly higher in LG in spring,winter and autumn (P <0.01 ).The Cu contents in soil of LG,MG and HG groups were significantly higher in summer (P <0.01),and they were significantly higher in CK and LG than MG and HG(P <0.01)in spring,winter and autumn.The contents of Cu and Mn were significantly (P < 0.05 or P < 0.01 )higher in spring and winter than in summer and autumn in all groups (except LG).