干旱区生态环境知识资源中心(Arid): 放牧强度季节调控对荒漠草原主要植物种群和土壤碳、氮的影响

Arid

	放牧强度季节调控对荒漠草原主要植物种群和土壤碳、氮的影响
其他题名	Effects of Seasonal Regulation of Grazing Intensity on N and C of the Main Plant Species and Soil in Desert Grassland
	孙世贤 1; 崔志明 2; 陈立波 3; 贾丽娟 4; 卫智军1
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2014
卷号	36 期号:2 页码:49-54
中文摘要	以内蒙古高原短花针茅荒漠草原为研究对象,设置6个放牧强度季节调控处理,对占群落总地上生物量85%~90%的主要植物种的全氮、全碳和土壤全碳、全氮及矿化氮进行了研究。结果表明:碱韭的全氮含量最高,为3.07%。全碳含量短花针茅最高,为42.89%。短花针茅在春季、夏季和秋季都重度放牧处理下全氮含量最低为0.15 g/m~2。无芒隐子草全氮和全碳在春季零放牧+夏季轻度放牧+秋季适度放牧和春季重度放牧+夏季重度放牧+秋季轻度放牧下最低,分别为0.14 g/m~2、0.12 g/m~2和2.72 g/m~2、2.28 g/m~2。土壤全氮含量在0~10 cm、20~30 cm和30~40 cm土层中不同处理之间无显著差异。春季零放牧+夏季重度放牧+秋季适度放牧下土壤NH_4-N含量显著高于其他处理(P<0.05),为7.81 mg/kg。结果认为,放牧降低了群落中碳、氮含量较低植物种的重要值;放牧干扰下,群落通过降低群落中碳、氮含量较低物种在群落中的比例来适应放牧干扰。
英文摘要	In order to reveal changes in the total N and total C of the main plant species and soil in the desert grassland in Inner Mongolia, a randomized block experiment of six seasonal regulations of grazing intensity was conducted. The results showed that the total N content of Allium polyrhizum was the highest (3.07%). Total C content of Stipa breviflora was the highest (42.89%). Under heavy grazing in spring, heavy grazing in autumn and heavy grazing in summer, total N content of Stipa breviflora was the lowest (0.15 g/m~2). Under no-grazing in spring, heavy grazing in autumn, moderate grazing in summer, heavy grazing in spring, heavy grazing in autumn, moderate grazing in summer, the total N and total C were the lowest (0.14 g/m~2, 0.12 g/m~2 and 2.72 g/m~2, 2.28 g/m~2, respectively). In the 0~10cm, 20~30cm and 30~40cm soil layer, the total N content was not significantly different among treatments. Under no-grazing in spring, heavy grazing in autumn, moderate grazing in summer, the content of NH_4-N were significantly higher than other treatments and CK (P < 0.05)(7.81 mg/kg). Grazing reduced the important value of plant species of low carbon and nitrogen content. Under the disturbance of grazing, the community adapted grazing disturbance by reducing the proportion of low carbon and nitrogen content species.
中文关键词	荒漠草原 ; 季节调控 ; 全氮 ; 全碳 ; 矿化氮
英文关键词	Desert grassland Seasonal Regulation Total N Total C Mineralized nitrogen
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5112505
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232037
作者单位	1.内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010018, 中国; 2.内蒙古巴彦淖尔市农牧科学院, 巴彦淖尔, 内蒙古 015000, 中国; 3.中国农业科学院草原研究所, 呼和浩特, 内蒙古 010020, 中国; 4.苏尼特右旗草原站, 内蒙古 011200, 中国
推荐引用方式 GB/T 7714	孙世贤,崔志明,陈立波,等. 放牧强度季节调控对荒漠草原主要植物种群和土壤碳、氮的影响[J]. 内蒙古农业大学,2014,36(2):49-54.
APA	孙世贤,崔志明,陈立波,贾丽娟,&卫智军.(2014).放牧强度季节调控对荒漠草原主要植物种群和土壤碳、氮的影响.中国草地学报,36(2),49-54.
MLA	孙世贤,et al."放牧强度季节调控对荒漠草原主要植物种群和土壤碳、氮的影响".中国草地学报 36.2(2014):49-54.