摘要
在家庭牧场尺度上,对禁牧、休牧等放牧方式下内蒙古短花针茅荒漠草原主要植物种群地上现存量、土壤含水量及其相关性进行研究,结果表明:禁牧区地上现存量为134.56g/m2,与休牧区(129.73g/m2)差异不明显,但均显著高于自由放牧区(84.80g/m2)(P<0.05);禁牧、休牧有利于土壤含水量的增加;主要种群的地上现存量受10～30cm土壤含水量影响较大,群落地上现存量与0～40cm土壤含水量有显著回归关系(P<0.05),回归方程为Y=2.7245X1+0.0556X2×X3×X4。
The relationship between the soil water content and the aboveground standing crop in Stipa breviflora desert steppe in banning and delaying grazing in family pasture were investigated.The results showed that the aboveground standing crop of main population under banning grazing was 134.56g/m^2,which was not significant different from delaying grazing（129.73g/m^2）（P〈0.05）,but the aboveground standing crop both in banning grazing and delaying grazing was higher than that in free grazing（84.80g/m^2）（P0.05）.Banning and delaying grazing were beneficial to increase of the soil water content.The aboveground standing crop of main population was mainly affected by the soil water content in layer of 10～30cm,and there were significant correlation between the aboveground standing crop of the community and the soil water content in layer of 0～40cm.The regression equation was as follows： Y=2.7245X1＋0.0556X2×X3×X4
出处
《中国草地学报》
CSCD
北大核心
2010年第2期75-79,共5页
Chinese Journal of Grassland
基金
科技部"十一五"国家科技支撑计划奶业发展重大关键技术研究与示范"北方牧区奶牛舍饲半舍饲生产技术开发与应用"(2006BAD04A16-4)
内蒙古科技创新引导奖励资金项目"内蒙古退化植被恢复技术和定向经济型植物产业化种植基地建设与示范"资助
关键词
荒漠草原
禁牧休牧
地上现存量
土壤含水量
Desert steppe
Banning and delaying grazing
Aboveground standing crop
Soil water content
