生态学报2000，Vol.20Issue(1)：43-48,6.
冷蒿草原土壤可萌发种子库特征及其对放牧的响应
Germinable soil seed bank of Artemisia frigida grassland and its response to grazing
摘要
Abstract
Features of germinable seed bank in Artemisia frigida grassland in Inner Mongolia and their responses to grazing were studied using germination test. Four perennial grasses, eleven perennial forbs and three annual species were detected in the seed bank. The number of germinable seeds per soil sample ranged from 45 to 305 with an average of 102. Seeds of perennial grasses, perennial forbs and annuals accounted for 46.57, 51.96 and 1.47 percent of the total seed bank, respectively. Perennial grass Cleistogenes squarrosa was the most abundant species in the seed bank. A relatively low similariy was found between the soil seed bank and its associated vegetation. However, light grazing increased the degree of the correlation. Distribution patterns of the buried seeds of most species were clumped. Species richness of the seed bank and quantities of the germinable seeds of most species were reduced by grazing disturbance, while grazing impact increased evenness of the seed bank distribution.关键词
可萌发种子库/冷蒿草原/放牧Key words
germinable soil seed bank/Artemisia frigida grassland/grazing分类
农业科技引用本文复制引用
苏德毕力格,李永宏,雍世鹏,萨仁..冷蒿草原土壤可萌发种子库特征及其对放牧的响应[J].生态学报,2000,20(1):43-48,6.基金项目
国家自然科学基金资助项目 （）
