| Along with the transformation of the operation mechanism of the city,The national ecological civilization construction strategy and the rural revitalization strategy were promoted rapidly.The vigorous optimization of rural resource allocation,To optimize the allocation of rural resources,to improve the rural living environment and to consolidate the rural management system have had a great impact on China’s agriculture.With the long-term support of national policies and investment in the capital cycle of developers,Rural agriculture from a single production gradually changed into agricultural production,leisure tourism,business research and development,education and health and other deep integration of the Multi-compound.Therefore,compound agricultural garden is an important part of modern efficient agriculture and an important channel for farmers to increase their income.The plant landscape in this compound agricultural garden is the main element of the park planning and plays a pivotal role in the agricultural landscape.Through data collection and extensive literature reading,To summarize the application of autumn leaf plant resources in China and the development connotation and research status of autumn leaf plant landscape in Jiangsu province,The autumn leaf plants in the provincial leisure and sightseeing agricultural garden of Jiangsu province were investigated.Through field investigation,real-time observation and tracking,and systematic and detailed records,combined with the previous data sorting,The autumn leaf plants in 12 leisure and sightseeing agricultural gardens in jiangsu province were analyzed and summarized in detail from the perspectives of species composition,community quantitative characteristics,community landscape forms and color-changing time sequence of autumn leaf plants.AHP and Fuzzy Comprehensive Evaluation Method were used to construct the comprehensive evaluation system of autumn leaf plant landscape in the park,and the evaluation results were obtained through quantitative evaluation and analysis.Finally,corresponding construction strategies are proposed for the practical problems presented in the evaluation results.The main results are as follows:(1)A total of 25 families,38 genera and 50 species of autumnal leaf plants were involved in the study.There are 44 species of 34 genera and 23 families of trees and 6 species of 6 genera and 5 families of shrub plants,Total species of autumn leaf accounted for 35.21%.Among them,the most commonly used autumn leaf species were in northern Jiangsu,with 44 species belonging to 22 families and 35 genera,accounting for 54.32%;In the middle area of Jiangsu province,there were 37 species,21 families,32 genera,accounting for 46.84%;The application of autumn leaf plant species in southern Jiangsu was the least.There were 33 species in 18 families,29 genera,accounting for 37.93%.The application difference of the number of species:from more to less,the order is in the north area of Jiangsu province>in the middle area of jiangsu province>in the south area of Jiangsu province.(2)According to the analysis of plant community characteristics in 68 sample plots,In the application of autumn leaf plants in the leisure and sightseeing agriculture gardens in Jiangsu province,the trees are mostly deciduous broad-leaved,the shrubs are mostly evergreen broad-leaved,and the coniferous tree species are mostly used in the parks with abundant water system.Among them,the number and species of autumn leaf plants and trees are obvious,with obvious advantages.There are only a few autumn tree species of shrub that are fully used.Application differences of plant types:From more to less in order for tree species with autumn leaves>shrub species with autumn leaves.(3)Most of the autumn leaf plants in northern Jiangsu started their leaf color changes before September 28(the lowest temperature is 17℃).From the middle of October to the end of November(the lowest temperature is 4℃～13℃)to enter the best viewing stage;In the middle of the Soviet union,the time for the emergence of autumn leaf plants was in mid-early October(the lowest temperature was 13℃～19℃).The best viewing period is mainly from mid-november to early December(the lowest temperature is about 7℃).The occurrence time of autumn leaf plants in southern Jiangsu was concentrated on October 5(the lowest temperature was below 17℃).In early November to enter the best viewing stage(minimum temperature of 8℃ below).The difference of discoloration time sequence:from fast to slow is in the northern area of Jiangsu province>in the middle area of Jiangsu province>in the southern area of Jiangsu province.(4)Through the comparison and analysis of the landscape effect of autumn leaf plants in north,middle and south of Jiangsu province;The south of Jiangsu area has the best comprehensive landscape effect.Membership grade Ⅰ park has two,the park has two Ⅱ level;And then the middle of the Jiangsu province,Membership grade Ⅰpark one,Ⅱ park has three level;Northern of the Jiangsu is the weakest,Membership grade Ⅰ park one,park has two level Ⅱ,subordinate Ⅲ triple park one.The integrated landscape of autumn leaf plants in three regions needs to be improved.The comprehensive difference of landscape quality is from high to low is in the southern area of Jiangsu province>in the middle area of Jiangsu province>in the northern area of Jiangsu province.Through the investigation and analysis of 68 sample plots in 12 leisure and sightseeing agricultural parks,this paper can have a general understanding of the existing autumn leaf plant landscape in the leisure and sightseeing agricultural parks in Jiangsu province.At the same time,after summarizing the current situation and existing problems of the landscape construction of autumn leaf plants in the park,the construction countermeasures and optimization Suggestions are put forward,so as to provide some help for the builders of the garden and provide reference for the future landscape construction of autumn leaf plants in rural areas. |
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