Assessments of Carbon Sequestration Capacity and Carbon Budget of Flower Borders
Flower border has been increasingly applied,but currently people have few scientific understandings of their carbon sequestration capacity.Based on the calculation of vegetation's carbon sequestration and plant community's carbon budget,this paper constructs a simple model to evaluate flower border carbon budget using 50 plants commonly used in flower borders and 5 flower borders in Tianjin,and analyzes the relationship between carbon budget of flower borders and carbon emission activities as well as community characteristics.It aims to provide the science base for evaluate and forecast the benefits brought in by the carbon budget of flower border.The results indicate:1)Annual and perennial plants have similar average carbon sink,while there are significant differences in carbon sequestration capacity between plants of the same life form.And there are 15 species of high carbon-storage plants,such as Cosmos sulphureus,Panicum virgatum and Rosa chinensis;2)Due to high carbon emissions of transportation,small areas of flower border,and unreasonable living facilities configuration,the majority of flower borders created are still carbon sources;and 3)To achieve a carbon-balanced flower border within 3-5 years,the following conditions should be usually met:the area exceeds 150 square meters,the distance to transportation area is within 82 kilometers,the renewal model is adopted that the annual plants are replaced by perennial herbaceous plants and shrubs,the proportion of annual herbaceous plants is less than or equal to 50%in area,the proportion of perennial herbaceous plants is less than or equal to 60%or greater than 80%in area,and the area of shrubs is not limited.
万方数据
维普
