干旱区生态环境知识资源中心(Arid): 放牧强度季节调控对短花针茅荒漠草原土壤养分的影响

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	放牧强度季节调控对短花针茅荒漠草原土壤养分的影响
其他题名	Effects of seasonal regulation of grazing intensity on soil nutrients in Stipa breviflora desert grassland
	孙世贤 1; 卫智军1 ; 陈立波 2; 吕世杰 1; 陈越 1; 王敏 1
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2013
卷号	22 期号:5 页码:748-754
中文摘要	以内蒙古高原荒漠草原亚带短花针茅(Stipa breviflora)草原为研究对象,设置五个放牧强度季节调控处理和对照处理,对不同处理方式下土壤养分进行研究。结果表明:放牧的季节调控对土壤养分状况有一定的影响。0~10 cm土层全氮、速效氮、NH4-N在各放牧处理下无显著差异(P>0.05),春季零放牧+夏季重度放牧+秋季适度放牧处理下全氮含量随土层深度的变化无显著差异(P>0.05),春季零放牧+夏季适度放牧+秋季重度放牧土壤表层全氮高于底层,秋季重度放牧土壤全氮含量有往表层积累趋势。土壤全磷、速效磷含量随土层深度的变化无显著差异(P>0.05),春季适度放牧+夏季适度放牧+秋季适度放牧下0~10 cm土层全磷、速效磷含量低于其他土层,短期的放牧对草地磷的养分含量无太大的影响。全钾含量在春季零放牧+夏季重度放牧+秋季适度放牧和春季零放牧+夏季适度放牧+秋季适度放牧下无显著差异(P>0.05)。速效钾含量0~10、20~30 cm土层春季零放牧+夏季重度放牧+秋季适度放牧明显高于春季零放牧+夏季适度放牧+秋季适度放牧(P<0.05),全年载蓄率相同的情况下季节载蓄率的调整能影响钾的有效性。土壤有机质含量在不同放牧处理下较对照区有所增加;在0~10cm土层各放牧处理较对照有机质有增加的趋势。速磷与NH_4-N、NO_3-N具有极显著相关关系(P<0.01),全氮和有机质具有极显著相关关系(P<0.01)。
英文摘要	In this study, we investigated the Soil Nutrients under Seasonal Regulation of Grazing Intensity in Stipa breviflora desert grassland of inner Mongolia, china. An experimental design was used with six treatments of five Seasonal Regulation of Grazing Intensity and CK. The results show that the total N, available N, NH4-N were no significant in different treatment (P>0.05) in 0-10 cm soil layer. The total nitrogen content with soil depth change was no significant difference in SA1 (zero-grazing in spring, severe grazing in autumn and moderate grazing in summer) treatment (P>0.05). The total nitrogen of surface soil was higher than the bottom in the SA2 (zero-grazing in spring, moderate grazing in summer and severe grazing in autumn) treatment. The total P and available P content with soil depth change was no significant difference (P>0.05). In the SA5 (moderate grazing in spring, moderate grazing in summer and moderate grazing in autumn) treatment, total P and available P content were lower the other layer in the 0-10 cm soil layer. In the SA1 treatment, the available K content of 0-10, 20-30 cm soil layer was higher than SA2 (zero-grazing in spring,moderate grazing in summer and severe grazing in autumn) treatment (P<0.05). The soil organic matter of the five Seasonal Regulation of Grazing Intensity were increased with CK treatment. Available P was significant correlation with NH_4-N, NO_3-N (P<0.01). Total N had significant correlation with organic matter (P<0.01).
中文关键词	短花针茅 ; 放牧强度 ; 季节调控 ; 土壤养分 ; 相关性
英文关键词	Stipa breviflora grazing intensity seasonal regulation soil nutrients correlation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4890068
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/2XILL650/229959
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 010019, 中国; 2.中国农业科学院草原研究所, 呼和浩特, 内蒙古 010020, 中国
推荐引用方式 GB/T 7714	孙世贤,卫智军,陈立波,等. 放牧强度季节调控对短花针茅荒漠草原土壤养分的影响[J]. 内蒙古农业大学,2013,22(5):748-754.
APA	孙世贤,卫智军,陈立波,吕世杰,陈越,&王敏.(2013).放牧强度季节调控对短花针茅荒漠草原土壤养分的影响.生态环境学报,22(5),748-754.
MLA	孙世贤,et al."放牧强度季节调控对短花针茅荒漠草原土壤养分的影响".生态环境学报 22.5(2013):748-754.