Evaluation Of Carbon Resources In Shenzhen City

With the growing global environmental problems and climate problems,low-carbon urban construction has become a strategic choice for many international metropolises to cope with the current increasingly serious climate change.Shenzhen as a pioneer in China's reform and opening up the city,the development of Shenzhen forestry carbon sink is China to show the world to respond to climate change responsibility window.Shenzhen City in the low-carbon aspects of the consideration for a long time,low-carbon city construction as the future direction of development,and the National Development and Reform Commission officially announced as the first batch of low-carbon pilot cities.The carbon density of ecosystem in Shenzhen is higher than that in the west,and the highest density(including mountain forest,garden greenland and mangrove)in Yantian ecological environment is 85.76 t·hm-2 and the lowest For Futian District,45.15 t·hm-2,the carbon density of each area is: Yantian District> Dapeng New Area> Neilingding Island> Luohu District> Pingshan New Area> Longhua New Area> Bao'an District> Longgang District> Nanshan District> Guangming New District > Futian District.In the mountain forest,the highest density of mountain forest ecosystem in the Yantian area is 89.77 t·hm-2,followed by Dapeng New District,76.91 t·hm-2,and the Futian area is 56.22 t·hm-2.In the garden green space,the green density of the garden greenbelt ecosystem in Longhua New District was the highest,with an average value of 37.62 t·hm-2,followed by Guangming New District,36.83 t·hm-2,and the lowest in the Yantian area was 26.18 t·hm-2.In the mangrove forest,the carbon density of the ecological system of Fukuda Mangrove Nature Reserve was 149.13 t·hm-2,followed by Bao'an and Dapeng New,117.74 t·hm-2 and 102.02 t·hm-2 The carbon density of mangrove forest in Nanshan area is 74.32 t·hm-2.Shenzhen,as a typical rapid urbanization development area,the forest is generally young and middle among the majority of the forest,the city's average forest density of 25.99 t · hm-2 subtropical evergreen broad-leaved forest is the highest carbon density of terrestrial forest(32.44 t · hm-2),while the average vegetation carbon density of the mountain forest was 29.80 t · hm-2,which was lower than that of Fang Jingyun and other national average forest carbon density(44.91 t · hm-2),Sichuan and other places of the study results,therefore,Shenzhen mountain forests relative to the same latitude and even low latitudes of the forest carbon reserves are low.The main reason is that Shenzhen is a high-speed urbanization area,the area of urban forest to plantation-based,native forest vegetation has gone,and secondary forest is only sporadic distribution,its growth and development period is limited,in the younger stage,Therefore,the average carbon storage density of evergreen broad-leaved forest is low,but it also shows that with the further development of the community,the forest carbon storage in Shenzhen will be further increased,the function of carbon sink will be further improved.In order to improve the capacity of urban carbon sinks and promote the construction of low-carbon eco-cities,combined with the characteristics of urban development and ecosystems in Shenzhen City,the following four aspects must be carried out to enhance the carbon sink capacity of Shenzhen:(1)start carbon sinks,the construction of large-scale green space and park construction,Pilot construction of service transactions,including the establishment of carbon sequestration protection and construction projects and pilot to promote carbon trading services;(2)Including the protection of basic ecological control lines,coastal zones,key protected areas and ecological security networks;(3)strengthen the quality of carbon resources to enhance,including biological invasion control,forest phase transformation,etc.;(4)strengthening the construction of carbon sequestration resources,including bare mountain and quarry complex green,"four with six corridors" ecological security network recovery and reconstruction,Green land restoration and construction,basic farmland protection and construction,etc..