摘要
2002年-2004年对阿拉善荒漠不同干扰方式下植物地上生物量、啮齿动物群落生物量及其生物量多样性指数、均匀性指数关系进行研究。结果表明：（1）各区灌木和草本地上生物量各年间存在明显差别，但较为一致的特点是7月是各区绝大多数灌木地上生物量最高的季节，10月是各区绝大多数草本地上生物量最高的季节。轮牧区3a较一致的特点是灌木和草本地上生物量从4月到10月变化不明显；过牧区草本地上生物量在3a中均处于较低水平，且季节变化不明显；禁牧区灌木和草本地上生物量3a中大部分处于较高水平。（2）啮齿动物群落生物量均匀性指数的比较分析说明，不同干扰方式对荒漠啮齿动物群落生物量产生了明显不同的作用，特别是在过牧干扰方式下啮齿动物群落的生物量均匀性指数其3a的平均值均处于较低的水平。（3）通过Spearman相关分析表明在不同干扰方式下只有灌木地上生物量与啮齿动物群落生物量均匀性指数表现出较强的相关性，且均呈正相关作用，草本地上生物量与啮齿动物群落生物量和生物量多样性指数有较强的相关性，且呈负相关作用。
The relationship between the above - ground biomass of plant, the biomass of rodent community, its biomass diversity indices and evenness indices were studied under different disturbance in Alashan Desert of Inner Mongolia from 2002 to 2004. The results showed： （1）The aboveground biomass of shrub and herb was significantly different under different disturbance in every years（2002 -2004）. The above-ground biomass of most shrubs was high in every area in summer（July）. The above - ground biomass of most herb was high in every area in autumn（October）. The same characteristic was above - ground biomass of shrub and herb was significantly different in the rotational grazing area from April to July in three years（2002-2004）. The above -ground biomass of herb was all lower and no significant difference between seasons（ spring,summer, autumn） in over- grazing area in three years （2002 - 2004）. The above - ground biomass of shrub and herb was most higher in forbid grazing area in three years （2002 - 2004）. （2） The evenness indices of rodent community biomass showed that action of different disturbance on rodent community biomass was significantly different in Alashan Desert. Especially, the average of evenness indices of rodent community biomass were all lower under over - grazing disturbance in every years（2002-2004）. （3） By analysis of Spearman correlation, the results showed that the correlation was stronger between shrub above - ground biomass and the evenness indices of rodent community biomass under different disturbance. The correlative action was all positive between the above - ground biomass of shrub and the evenness indices of rodent community biomass in every area. The correlation was stronger and had negative action between the above - ground biomass of herb and rodent community biomass diversity indices.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2006年第3期46-52,共7页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
国家自然科学基金项目(30160019)
教育部"春晖计划"项目
关键词
干扰
生境
植物
啮齿动物
群落
生物量
Disturbance
habitats
plant
rodent
community
biomass
