期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：4
页码：042056
DOI：10.1088/1755-1315/199/4/042056
语种：English
出版社：IOP Publishing
摘要：Soil seed bank plays a vital role in plant community succession and the restoration of damaged areas. As a key factor for plant growth, water directly affects seedling numbers of soil seed bank. A germination experiment was carried out in Tianjin Guangang Forest Park, where the germinated arbor species were Fraxinus chinensis, Koelreuteria paniculata, and Robinia pseudoacacia. This paper aims to study the quantative attributes of soil seed bank under different watering gradients in the case of controlling variables from May to October. The results showed that the number of all kinds of seed bank germination would reach the maximum under 1000ml watering gradient, and the number of Fraxinus chinensis was the largest at 1000ml. The germination of Koelreuteria paniculata performed well under 1000ml or 1500ml water treatment. The total number of Robinia pseudoacacia kept stable at 3 individuals in the case of 500ml and 1000ml. According to the statistical analysis of the mortality rate, the results showed that the mortality rate was lower at 500ml and 1000ml, and the mortality rate was zero in September - October under all kinds of the watering gradient. It is helpful to provide a basis for studying of soil seed bank by exploring how watering gradient affect the growth of arbor population.
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