Soil seed bank and species turnover in a limestone grassland
Soil seed bank and species turnover in a limestone grassland
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DOI：
10.2307/3235635
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发表时间：
1994-02
影响因子：
2.8
通讯作者：
P. Milberg;M. Hansson
中科院分区：
文献类型：
--
作者：
P. Milberg;M. Hansson
。对瑞典南部石灰岩草原的植被和土壤种子库进行了17年的放牧和不放牧的永久1-m2亚样地的研究。在记录的92个物种中，18个物种只存在于种子库中，28个物种在种子库中出现的频率高于植被，24个物种在种子库中出现的频率低于植被，22个物种在种子库中未被发现。在种子库中存在的物种中，植生植物占多数。利用1980年、1986年和1990年收集的存在/缺失数据估算了植被的物种周转量。流动率较高，但放牧与未放牧子样地间无显著差异。在许多情况下，单个物种的周转率也很高。一个物种的更替与其在持久种子库中的存在之间没有明确的关系。
. The vegetation and soil seed bank in a limestone grassland in southern Sweden were studied in permanent 1-m2 subplots which had been either grazed or not grazed for 17 yr. Of the 92 species recorded, 18 were present only in the seed bank, 28 were more frequent and 24 were less frequent in the seed bank than in the vegetation and 22 were not detected in the seed bank. Among the species present in the seed bank, therophytes were over-represented. Species turnover in the vegetation was estimated from presence/absence data collected in 1980, 1986 and 1990. Turnover was high, but there were no differences between grazed and ungrazed subplots. The turnover for individual species was also high in many cases. There was no clear relationship between the turnover of a species and its presence in the persistent seed bank.