Research On The Potential Of Vegetation In Maoershan Area Used In Simple Roof Greening In Daqing City

Roof greening is simply about planting green plants on a flat or sloping roof to beautify the environment.Large-scale application can not only help the restoration of urban ecosystems,alleviate urban heat island effects,increase urban temperature and humidity effects,and improve local microclimate;but also reduce energy consumption,protect wildlife habitats,and enrich urban vertical space landscapes,it can protect against the sun in summer and keep warm in winter for the interior of the building.Roof greening and roof garden have become an important way to improve the quality of urban environment.However,in Daqing,Heilongjiang Province,the development of roof greening is extremely slow.Poor climatic conditions,limited species of plants and other factors limit the development of roof greening in Daqing.According to the Habitat Template Hypothesis states,plant species which are similar to rooftop habitat can be found by purposeful selection of plants according to local roof habitat conditions.These plants have the potential to grow in rooftop habitats.In view of the blank research on roof greening in Daqing,this paper studies the potential application of vegetation in the simple roof greening of Daqing in Maor mountain area based on“the habitat template hypothesis”.Firstly,this paper described the roof habitat of Daqing in a directional way by using the methods of field monitoring,data investigation,meteorological department data collection and so on,and parameterized the roof habitat.Then,through comparison,screening and other methods,29 species of plants existing in Maor mountain area were summarized as primary selection plants(13 species of Sedum,5 species of Compositae,1species of Scrophulariaceae,1 species of Equisetum,1 species of Leguminosae,1 species of Selaginellaceae,1 species of Cruciferae,1 species of Umbelliferae,1 species of Gramineae,1species of Polygonaceae,1 species of Labiatae,1 species of Euphorbiaceae and 1 species of Rosaceae).From April to October 2018,the actual habitat of 29 alternative plants were investigated in Maor mountain area,Heilongjiang Province,the quantitative determination of plant growth environment,life form,physiological and biochemical indexes were carried out.Finally,29 kinds of alternative plants were analyzed by grey correlation analysis and classified according to the results of the analysis(dominant potential species,possible potential species,nodominant species).11 species of plants that have great potential to grow on the roofs of Daqing are discovered(10 species of Sedum: Echeveria glauca,winter pot kalanchoe,Sedum aurea,white stonecrop,Jilin Sedum,Sedum sarmentosum,Hylotelephium telephium,sedum spectabile boreau,Rhodiola rosea,Sedum lineare and 1 species of Scrophulariaceae: Indian paintbrush),and most of them are Scenaenaceae plants.At the same time,the influence degree of habitat factors of roof greening plants in Daqing city was analyzed,and it was found that the content of organic matter was the most influential factor of the degree of influence,it provides theoretical support and technical guidance for the selection of simple roof greening plants in Daqing.This study provides a feasible and scientific way for the selection of simple roof greening plants in China.