荒漠草原优势种群特征对放牧强度季节调控的响应  

Response of Seasonal Regulation of Grazing Intensity on dominant population in Stipa breviflora Steppe

作　　者：王天乐[1] 卫智军[1] 吕世杰[2] 刘文亭[1] 白玉婷[1] 张爽[1] 丁莉君[1] Wang Tianle Wei Zhijun Lv Shijie Liu Wengting Bai Yuting Zhang Shuang Ding Lijun(College of Grassland,Resource and Environmental, Inner Mongolia Agricultural University, Hohhot 010019, China College of Science , Inner Mongolia Agricultural University, Hohhot 010019, China)

机构地区：[1]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010019 [2]内蒙古农业大学理学院,内蒙古呼和浩特010019

出　　处：《草原与草业》2017年第1期30-37,共8页Grassland and Prataculture

基　　金：国家自然科学基金项目(31460126);国家重点基础研究发展计划(2014CB138805);内蒙古自治区2016年博士研究生科研创新项目(B20161012906Z)资助

摘　　要：以短花针茅草原为研究对象,设置5个放牧强度季节调控试验处理和对照处理,研究了不同放牧强度季节调控对短花针茅荒漠草原优势种群的影响,结果表明:除对照区外,短花针茅、无芒隐子草、旋花、碱韭高度、密度、地上现存量、重要值春季不放牧+夏季重牧+秋季适牧和春季不放牧+夏季适牧+秋季重牧两种放牧处理均高于其他放牧处理,是合理可行的草地利用方式。The experiment was conducted in stipa breviflora desert steppe, we sat up 5 seasonal regulation of grazing intensity treatments and control treatments. Studying on the dominant species population under the differ ent seasonal regulation of grazing intensity treatments. The results showed that the height,the density, the above ground standing crop,the importance value of Stipa breviflora, Cleistogenes songorica, Convolvulus ammannii and Allium polyrhizum in SA1（not grazing in spring,heavy grazing in summer and moderate grazing in autumn） and SA2（not grazing in spring,moderate grazing in summer and heavy grazing in autumn） were higher than that other grazing treatments, In addition to the control area,it is a reasonable and feasible way of grassland grazing.

关 键 词：短花针茅草原 放牧强度季节调控 优势种 

分 类 号：S812.8[农业科学—草业科学]