CAJ | 학술논문

选取在西藏拉萨地区人工种植的两龄紫穗槐为研究对象，探讨了灌丛内与灌丛外土壤各种形态氮素、全磷、有机碳的含量特征及土壤pH的差异。结果表明，1）相对于灌丛外土壤，灌丛内土壤的全氮、铵态氮、硝态氮分别平均高23．44％，13．95％和37．60％，土壤全磷平均高19．57％，土壤有机碳平均高44．21％，土壤 pH 值平均低1．69％。2）灌丛内与灌丛外土壤的全氮、铵态氮、硝态氮、全磷、有机碳、pH 均差异显著（P＜0．05）。3）垂直方向上，灌丛内和灌丛外在10～20 cm土层的全氮、铵态氮、硝态氮、全磷均为最高，有机碳和 pH 则随土层深度增加而递减。4）土壤各营养元素之间表现为不同程度的相关性，土壤有机碳与铵态氮呈极显著正相关关系（P＜0．01），与全磷呈显著正相关关系（P＜0．05）；全氮与全磷呈极显著正相关关系（P＜0．01）；铵态氮与全磷呈极显著正相关关系（P＜0．01）。
선취재서장랍살지구인공충식적량령자수괴위연구대상，탐토료관총내여관총외토양각충형태담소、전린、유궤탄적함량특정급토양pH적차이。결과표명，1）상대우관총외토양，관총내토양적전담、안태담、초태담분별평균고23．44％，13．95％화37．60％，토양전린평균고19．57％，토양유궤탄평균고44．21％，토양 pH 치평균저1．69％。2）관총내여관총외토양적전담、안태담、초태담、전린、유궤탄、pH 균차이현저（P＜0．05）。3）수직방향상，관총내화관총외재10～20 cm토층적전담、안태담、초태담、전린균위최고，유궤탄화 pH 칙수토층심도증가이체감。4）토양각영양원소지간표현위불동정도적상관성，토양유궤탄여안태담정겁현저정상관관계（P＜0．01），여전린정현저정상관관계（P＜0．05）；전담여전린정겁현저정상관관계（P＜0．01）；안태담여전린정겁현저정상관관계（P＜0．01）。
The two years old Amorphafruticosa planted in the southwest of the Tibetan Plateau,Lhasa was se-lected to study the various forms of nitrogen,total phosphorus,contents of organic carbon and pH changes in both IC (in the crown)and OC (out of crown).1)Total nitrogen,ammonium and nitrate in IC were 23.44%, 13.95% and 37.6% higher respectively than those in OC.Soil total phosphorus in IC was 19.57% higher,soil organic carbon in IC was 44.21% higher and soil pH was lower by 1.69 units than the average.2)There were significant (P<0.05)differences in the contents of soil total nitrogen,ammonium,nitrate,total phosphorus, organic carbon and soil pH between IC and OC.3)In a vertical direction,the contents of total nitrogen,am-monium,nitrate and total phosphorus reached a maximum value at a depth of 10-20 cm in soils.The contents of organic carbon and pH reduced with increasing depth.4)A linear relation was shown between the organic carbon and total nitrogen,ammonium nitrogen,total phosphorus in IC.