CAJ | 학술논문

[目的]探讨草地退化对土壤理化性状的影响。[方法]研究退化高寒草甸土壤草土比、土壤质地等物理性状,用土壤养分常规分析法分析不同退化草地土壤速效氮、速效磷、速效钾、有效铜、有效锌、有机质及pH等。[结果]随着退化梯度的加剧和土层的加深,草土比逐渐减小;不同退化梯度的草地草土比在土层0～10cm中最大,该层的草土比在0.00100～0.04000变化,土壤类型为壤土类。不同退化梯度上土壤化学性质均发生变化,其中速效氮、磷、钾含量随土层的加深和退化程度的加剧明显减少。退化草地的微量元素铜、锌含量比较缺乏。[结论]各种养分含量和pH与退化草地演替度的大小无显著相关。
[목적]탐토초지퇴화대토양이화성상적영향。[방법]연구퇴화고한초전토양초토비、토양질지등물이성상,용토양양분상규분석법분석불동퇴화초지토양속효담、속효린、속효갑、유효동、유효자、유궤질급pH등。[결과]수착퇴화제도적가극화토층적가심,초토비축점감소;불동퇴화제도적초지초토비재토층0～10cm중최대,해층적초토비재0.00100～0.04000변화,토양류형위양토류。불동퇴화제도상토양화학성질균발생변화,기중속효담、린、갑함량수토층적가심화퇴화정도적가극명현감소。퇴화초지적미량원소동、자함량비교결핍。[결론]각충양분함량화pH여퇴화초지연체도적대소무현저상관。
[Objective]The aim of this study is to explore the effects of grassland degradation on soil physical and chemical properties.[Method]The ratio of plant root to soil and soil texture on Alpine Meadow were investigated in this study,and soil available N,P,K,Cu,Zn,organic matter and pH value were also analyzed by routine analysis of soil nutrients in different degraded grasslands.[Result]With the intensification of degraded gradient and the soil depth,the ratio of plant root to soil was decreased gradually.The highest ratio of plant root to soil was in 0-10 cm depth of soil in grassland with different degraded gradients,while its ratio of plant root to soil changed from 0.001 to 0.040 with soil type of loam.Soil chemical characteristic changed in different degraded gradients.The content of available N,P,K reduced significantly with the soil depth and the intensification of degraded gradients.The content of Cu and Zn was relatively lack in degraded grassland.[Conclusion]There is no significant correlation between nutrition content or pH value and the succession degree of degraded grassland.