| Guizhou has extremely rich wild plant resources,but the current research on wild ornamental plant resources is relatively weak.In order to grasp the species composition,ornamental characteristics,eco-geographical distribution and reserves of wild woody ornamental plant resources in Guizhou Province,find out their species patterns and analyze the differences in the effects of different regional climate conditions on the urban greening tree species in Guizhou.According to the data sorting,the qualitative and quantitative methods are used to screen out the types with greater potential for development and utilization,and the gardening area planning is carried out based on Arc GIS software.Research indicates:(1)797 species of wild vascular woody plants with high ornamental value in Guizhou Province,accounting for 9.95% of the vascular plant family in Guizhou Province,belonging to 288 genera of 106 families,and the number of genera and genera in Guizhou Province respectively 42.06% and 16.17% of the number;23 families of dominant families and 10 genera of dominant genera,including 30 species of gymnosperms,8 families,17 genera,736 species of dicotyledons,94 families,257 genera,and 31 species of monocotyledons,4 families,14 genera,It also covers three types of arbor,shrub,and vine plants,with the arbor type being the most,followed by shrubs,and the least woody vines.For ornamental purposes,48.06% of the species can be used for flower viewing,and the characteristics of flower viewing are diverse,mainly white,red and yellow,followed by blue and purple flowers;the flowering period is mainly concentrated in spring;flowers Flowering plants with a diameter of 1-3 cm are mostly,followed by 3-5 cm and> 5 cm.The floral phase types are mainly scattered floral phase,cluster floral phase and linear floral phase.There are relatively few flower-seeding plants compared to flower-seeding plants.The shape-seeding plants and climbing plants are the types with the least number of species.There are 18 types of bamboo.From the perspective of garden use,the most abundant one is flowering shrubs,followed by solo trees,garden trees,bonsai and styling,street trees,protective trees,wooden vines,hedges,relatively few,at least The ground cover category and interior decoration category.(2)In terms of horizontal distribution,Guiyang City,Qiannan Prefecture,Tongren Yinjiang,Jiangkou and other places contain the most wild woody ornamental plants,followed by southern Qiandongnan,southern Qianxinan,northwest Zunyi and other regions;In places with low abundance such as Liuzhi Special Zone,Pu'an,Qinglong,Zhenyuan,Sansui and other places,there are only less than 60 species;the main manifestation is that the species richness in the areas with better originality and the protected areas high.Based on the vertical distribution of altitude scales,the growth trend of species richness appears as a single peak,with the highest species richness in the interval of 500-1500 m above sea level.In general,the vertical distribution based on the elevation scale presents the characteristics that the vertical difference is higher than the horizontal difference,as well as the trend of the southerly hot species and the northerly cold resistant species.(3)In line with the principles of following the laws of nature,combining zonal and non-zonal characteristics,taking urban greening construction as the guide,combining comprehensive and leading factors,the average temperature in January and administrative divisions are grade I indicators,and the annual average Air temperature,extreme low temperature in January,average low temperature in January,average temperature in July,average high temperature in July as auxiliary indicators,using DEM-based multiple linear regression + residual interpolation method as the operating method,and Arc GIS software as the basis for mapping,Divide the landscaping area of Guizhou into 8 areas,namely: Southwest Guizhou,South Guizhou,extremely hot and humid landscaping area(area ?),red water,warm and humid landscaping landscaping area(area ?),Qiannan,southeast Guizhou Extremely humid landscaping area(area ?),warm and humid landscaping area in southwest Guizhou(area ?),mild and extremely humid landscaping area in eastern Guizhou and southeastern Guizhou(area ?),moderate and humid landscaping area in central Guizhou and northern Guizhou(Area ?),warm and humid garden greening area in West Guizhou(Area VII),Weining and Hezhang cold and humid garden greening area(Area ?).(4)AHP was used to comprehensively evaluate and classify 797 wild woody ornamental plants in Guizhou Province,and it was concluded that there are 28 first-level ornamental plants(> 4)with higher ornamental value and better resistance;second-level ornamental plants 122 species of plants(3.6 ? 4),the comprehensive value is slightly lower than the first level but can be used as a solid backup resource for resource development;there are 398 species and 249 species in the third level(3.2 ? 3.6)and the fourth level(<3.2),some species Although it has high ornamental value,it is included in this category due to problems such as low resources or poor adaptability.Large-scale development is not recommended.According to the comprehensive scores of all plants,the plants with development and application potential evaluation grades 1 and 2(score> 3.6)are listed as the objects with greater development potential,and they are planned for urban application areas: gardens and green areas The number of ornamental plants in Zones ? and ? is the most abundant area,up to 129 and 127,followed by Zones ?,?,and ?,each with 109,96,and 82 species,and the least area is Zone ?,There are 44 species,40 species,and 28 species in zone ? and zone ?,respectively;the overall performance is zone III> VI zone> I zone> V zone> ? zone> ? zone> ? zone> ? zone. |
PDF Full Text Request