文献类型：期刊文献

中文题名：内蒙古鄂尔多斯地区四个植物群落类型的土壤碳氮特征

英文题名：CHARACTERISTICS OF SOIL CARBON AND NITROGEN OF FOUR PLANT COMMUNITY TYPES IN ERDOS, INNER MONGOLIA

作者：史作民[1] 刘世荣[1] 程瑞梅[1]

第一作者：史作民

机构：[1]中国林业科学研究院森林生态环境与保护研究所

年份：2004

卷号：40

期号：2

起止页码：21-27

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金重大项目 ( 3 9990 490 );面上项目 ( 3 0 2 710 71)联合资助

语种：中文

中文关键词：鄂尔多斯地区;植物群落类型;土壤碳;土壤氮;沙地草地生态系统;土地荒漠化

外文关键词：Plant community types, Soil, Characteristics of carbon, nitrogen, Erdos

分类号：S153.61

摘要：对内蒙古鄂尔多斯地区本氏针茅、油蒿、牛心朴子和严重退化地等四种主要植物群落类型土壤碳氮特征进行了研究。结果表明 :各群落类型土壤 0～ 1 0、1 0～ 30和 30～ 6 0cm层次有机碳含量的季节变化多不明显 ;不同群落 0～ 1 0和 1 0～ 30cm层土壤全氮含量的季节变化多表现出显著水平 ,基本表现为 5月明显高于 7月和 9月 ,而 7月和 9月的含量相差不大 ;各群落类型 0～ 1 0cm层土壤硝态氮有显著的季节变化 ,5月明显大于 7月和 9月 ;不同群落各层土壤铵态氮的季节变化均达到极显著水平 ,表现为 5月 >7月 >9月。有机碳和全氮含量在不同季节各群落土壤中的垂直分布规律比较一致 ,即 0～ 1 0cm >1 0～ 30cm >30～ 6 0cm ;不同季节各群落类型土壤硝态氮含量垂直规律不明显 ,仅 5月 0～ 1 0cm层的含量明显大于其它层次 ;不同季节各群落土壤的铵态氮没有垂直分布规律。虽然不同季节各土层有机碳含量的群落间差异有些已达到显著水平 ,0～ 1 0cm层土壤的全氮含量在群落间多表现出显著差异 ,各土层硝态氮和铵态氮含量 5月和 7月的群落间差异更是达到极显著水平 ,但这些差异在群落间没有明显的规律性。
Characteristics of soil carbon and nitrogen of Stipa bungeana community, Artemisia ordosica community, Cynanchum komarovii community and weeds community Erdos, Inner Mongolia were studied. There were no significant seasonal differences of organic carbon content in 0～10, 10～30 and 30～60?cm soil depths of all plant communities. The seasonal differences of total nitrogen in 0～10 and 10～30?cm soil depths of all communities were significant, the content in May was higher than that in Jul. and Sept. and the difference between Jul. and Sept. was not obvious. Seasonal differences of nitrate nitrogen content in 0～10?cm soil depths of communities were significant, and the content in May was higher than that in Jul. and Sept. Seasonal differences of ammonium nitrogen content of all soil layers were significant in all communities, and the content in May was higher than that in Jul., then higher than that in Sept. The vertical distribution of organic carbon and total nitrogen contents in different soil depths of all communities were similar in different seasons. That was decreased with the soil depths. However, there were no vertical distribution trends of the nitrate and ammonium nitrogen contents in all four community soils in different seasons, only the nitrate nitrogen content in 0～10?cm soil was higher than that in other soil layers in May. Although some of the differences of organic carbon contents in all soil layers in different seasons among plant communities were significant, most of the differences of total nitrogen contents in 0～10?cm soil among communities were significant, and the differences of nitrate and ammonium nitrogen contents in all soil layers in May and Jul. among the communities were more significant, there were no obvious trends about these differences among them.