Quantative attributes of three arbor species germinated from soil seed bank under different watering gradients

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Yue, Weixin^1 ; He, Mengxuan^2 ; Li, Hongyuan^1 ; Luo, Li^1

College of Environmental Science and Engineering, Nankai University, Tianjin

300350, China^1

College of Geography and Environment Science, Tianjin Normal University, Tianjin

300387, China^2

关键词: Damaged area;    Key factors;    Mortality rate;    Plant communities;    Plant growth;    Robinia pseudo-acacia;    Seed bank;    Soil seed bank;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/4/042056/pdf
DOI  :  10.1088/1755-1315/199/4/042056

学科分类：环境科学（综合）

来源: IOP

【 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.