Research On The Construction Of Wetland Plant Landscape In Shangchong Fruit Park,Guangzhou

At present,herbaceous plants are the main plant landscape in wetland area of Guangzhou.There are few kinds of Wetland Woody Plants,such as Taxodium distichum,Glyptostrobus pensilis.Wetland landscape lacks landscape persistence,in addition,the maintenance is not reasonable,and promote the biological accumulation of wetland water pollution and bring about secondary pollution phenomena.To enrich the diversity of wetland plants,and to make good plant landscape,the stable and sustainable development of wetland ecosystem.We have selected an ecological wetland in Shangyong Fruits Park,Haizhu district,Guangzhou for study,which is on the verge of protection and degradation.Through the establishment of sample plots,transplanting herbs including Cyperus papyrus,Iris tectorum and Scirpus mariqueter and woody plants including Cleistocalyx operculatus,Bischofia javanica and Glycosmis pentaphylla,we carry out the relevant tests and chioce the appropriate application of wetland plants,construct the wetland plant configuration pattern and apply it.We provide some suggestions for the protection and utilization of wetland resources in the city and have a correct and reasonable planning direction.There are the main results of this article:1.We investigated the community characteristics and analyzed the relevant test about the community's influence of the water quality in the.community of 13 dominant herbaceous plants communities(including transplanting plants and the original plantin communities such as Ampelopteris prolifera and Ampelopteris prolifera etc.).We measured the total phosphorus,the otal nitrogen,the ammonia nitrogen and the Chemical oxygen demand and other seven indicators of the determination and applied Comprehensive Weighted Evaluation for comprehensive score.From all of this,we came a conclusion that the Eichhornia crassipes community,the Hygrophila salicifolia community,the Cyperus papyrus +Thalia geniculate community and the Cyperus papyrus community have a better water quality.Through the influence of 13 kinds of plants' decay and decomposition to the water quality,the results showed that the remnant of Eichhornia crassipes and Ampelopteris prolifera have a smallest influence to the water quality,they have a certain self-degradation ability.Thalia geniculate and Scirpus mariqueterred have the greatest impact in it.The content of soil organic matter in the same depth of different plant communities was not significantly.The Soil available phosphorus content of Cyperus papyrus +Thalia geniculate community(10.66mg/kg)is the lowest among other plant communities.And others have a small difference.The Soil ammonium nitrogen content of Scirpus mariqueter community(39.74mg/kg)is lowest among other plant communities,and it showed that Scirpus mariqueter was strong in enrichment of nitrogen.The Available potassium content of Typha orientalis community(135.47mg/kg)is higher than other plant community,and its litter had a certain effect on the soil's potassium content.Comprehensive test results to select suitable aquatic herbs used in the upwelling of Shangchong fruit park wetland,both water purification and landscape function and extensive management of the plant,such as Iris tectorum and Ampelopteris prolifera.2.Through the analytic hierarchy process(AHP),the evaluation system was established to evaluate the application value of 25 Wetland Woody plants in the sample and preliminary project group project.According to the results it is concluded that the application value of the composite scores above 3.0 high woody plant resources with Glochidion lanceolarium,Cleistocalyx operculatus,Cephalanthus tetrandrus,Barringtonia racemose,Syzygium hainanense,Kandelia candel,Taxodium distichum,Acanthus ilicifolius,Syzygium tephrodes,Elaeocarpus hainanensis,Callistemon viminalis.These plants all have a certain ornamental value and ecological function of water,Cleistocalyx operculatus,Taxodium distichum,Acanthus ilicifolius,Kandelia candel,Callistemon viminalis,Barringtonia racemose and Glochidion lanceolarium also has better purification ability.3.A wetland plant configurate model based on woody plants and herbaceous plants was proposed.While reducing the late maintenance cost of wetland plants,the ecological purification function and landscape persistence of the plant communities are considered.And we carry out this mode into the design of landscape in the Shangyong Fruit Park wetland.Considering the buffering transition and functional coordination between the Park itself and its surrounding environments,we could divide it into 3 parts: district of vegetation conservation,district of ecology landscape and district of production and viewing.By taking some less-interfered measures of proper replanting the vegetation,we can solve the problems of recovering the vegetation landscape and environmental ecology.We can keep an eye on both lowering the cost of maintaining and the function of ecology,landscape and science popularization in a holistic way to seek a developmental mode of balance,health and sustainability.