CAJ | 학술논문

以江苏扬州市江都区7年生女贞人工林为对象，研究密度调控对其土壤铵态氮（NH4＋-N）和硝态氮（NO3--N）含量剖面分布特征及季节变化的影响。结果表明：不同调控密度下女贞人工林土壤NH4＋-N和NO3--N含量均随着土层深度的增加而逐渐降低，且表现出明显的季节变化；3种密度调控下土壤NH4＋-N 含量均是秋冬两季较高，春季最低，夏季又有明显回升，且3种密度中的2275株/hm2下NH4＋-N含量在4个季节均高于另外2种密度；土壤NO3--N 季节变化与NH4＋-N大体一致，在春季含量最低，但不同密度间变化趋势差异较大；土温、含水量及有机质均与土壤NH4＋-N和NO3--N含量存在显著的相关关系（p＜0.05），且在夏季均达到极显著相关（p＜0.01）。
이강소양주시강도구7년생녀정인공림위대상，연구밀도조공대기토양안태담（NH4＋-N）화초태담（NO3--N）함량부면분포특정급계절변화적영향。결과표명：불동조공밀도하녀정인공림토양NH4＋-N화NO3--N함량균수착토층심도적증가이축점강저，차표현출명현적계절변화；3충밀도조공하토양NH4＋-N 함량균시추동량계교고，춘계최저，하계우유명현회승，차3충밀도중적2275주/hm2하NH4＋-N함량재4개계절균고우령외2충밀도；토양NO3--N 계절변화여NH4＋-N대체일치，재춘계함량최저，단불동밀도간변화추세차이교대；토온、함수량급유궤질균여토양NH4＋-N화NO3--N함량존재현저적상관관계（p＜0.05），차재하계균체도겁현저상관（p＜0.01）。
The effect of density-dependent of plantation on the characteristics of profile distribution and season-al variation of soil NH4+-N and NO3--N contents were studied based on the 7 a Ligustrum lucidum plantation in Jiangdu District of Yangzhou Municipality.The results showed that the contents of soil NH4+-N and NO3--N in plantations with different densities decreased with soil depth,which also showed significant changes with different seasons.The content of NH4+-N in 3 densities was all higher in autumn and winter with the lowest value in the spring,and the content increased again in the summer.The NH4+-N content of the plantation with density of 2 275 trees/hm2 was always higher than that of plantations with another two densities in the four different seasons. The seasonal change of NO3--N content basically followed the same trend as NH4+-N content,with the lowest value in the spring,but there were significant differences among plantations with different densities.Contents of NH4+-N and NO3--N were significantly correlated with soil moisture,temperature,and organic matter content (p<0.05),and they were extremely significantly correlated with those factors in the summer (p<0.01).