CAJ | 학술논문

为了有效开发利用草原、维护草原生态系统良性循环，以内蒙古呼伦贝尔克鲁伦流域的克氏针茅（Stipa krylovii）典型草原为研究对象，通过设置不同放牧强度的天然草原试验样地，采用野外实地调查与室内分析法，研究不同放牧强度下土壤碳-氮空间分布格局以及其对植被生产力的影响。结果表明：不同放牧梯度上植物地上生物量变化趋势为：轻牧＞中牧＞重牧；不同放牧梯度上的土壤有机质碳含量有显著差异性，变化表现为：轻牧＞重牧＞中牧；不同放牧梯度上的土壤氮含量有显著差异性，且轻牧＞重牧、轻牧＞中牧，中牧、重牧变化关系不显著；不同放牧梯度上，土壤C／N值与植物生物量均保持一种相对稳定的关系。
위료유효개발이용초원、유호초원생태계통량성순배，이내몽고호륜패이극로륜류역적극씨침모（Stipa krylovii）전형초원위연구대상，통과설치불동방목강도적천연초원시험양지，채용야외실지조사여실내분석법，연구불동방목강도하토양탄-담공간분포격국이급기대식피생산력적영향。결과표명：불동방목제도상식물지상생물량변화추세위：경목＞중목＞중목；불동방목제도상적토양유궤질탄함량유현저차이성，변화표현위：경목＞중목＞중목；불동방목제도상적토양담함량유현저차이성，차경목＞중목、경목＞중목，중목、중목변화관계불현저；불동방목제도상，토양C／N치여식물생물량균보지일충상대은정적관계。
For effective development and utilization of grassland ,maintenance of grassland ecosystem virtuous circle ,taking the Hulunbeir Kerulen's esparto(Stipa krylovii)typical grassland in Inner Mongolia as research object ,setting up different grazing gradients of natural grassland test sample plot and using the methods of field investigation and indoor analysis ,different grazing intensity of soil carbon -nitrogen space step pattern and its influence on vegetation productivity were studied .The results showed that the plant biomass changed with the trend of lightly grazed> moderately grazed> heavily grazed in different grazing gradients ;Soil organic carbon content had obvious difference :lightly grazed> heavily grazed> moderately grazed ;Soil nitrogen content had obvious differences between various samples in different grazing gradients :lightly grazed> heavily grazed and lightly grazed>moderately grazed ,the relationship between moderately grazed and heavily grazed was not obvi-ous ;soil C/N value and plant biomass all maintained a relatively stable relation in different grazing gradients .