Study On The Forestry Construction Countermeasures Of Hunan Urban Agglomeration

The environment problem of the Chinese and Abroad Urban Agglomeration was discussed. It studied the forestry construction of the Urban Agglomeration. To probe into the way that resolve the environment problem through forestry. It made three Urban Agglomerations of HuNan as model and analysised them. It brings forward forestry countermeasures from the Point of envoirment problem resoving and Eco-Safety used the theory on Urban Agglomeration forestry building. The conclusion as follows:(1)The Urban Agglomeration forestry building included four sides as whole foresty programming. That is the forestry network construction of river system, of roadway system, of farmland system. It included forest maintenance for more eco and Industry function. It included the whole judgeing on it. Chinese Urban Agglomeration envoirment building must be guidanced by forest network and river network theory for it still be initial starting phase. It must pay more attention to several area`s forestry building. Firstly,It is the city and village transition and suburb Eco-sensitively forestry building. Secondly, It is the Eco-segregating forestry of riverside. Thirdly, It is the fence forestry building of The Urban Agglomeration`s traffic trunk. Fourthly, It must pay attention to the wetland eco-system.(2)The analysis of the three Urban Agglomeration development and the landscapee pattern. We defined the three Urban Agglomeration of HuNan province based on the economic relation intensity and economic contact membership grade. ChangZhuTan Urban Agglomeration (CZT) being in the mature Stage. It is national Urban Agglomeration. DongTing Lake Urban Agglomeration (DTL) being in the Initial and growing Stage. Basin Urban Agglomeration (XNB) being in the gestation stage.(3)Results of the analysis on landscape character and the development potential of the Eco-used land. Landscape character distributing character indicated that the landscape heterogeneity of DTL and XNB is higher. XiangZhong-section and CZT`s landscape fragmentation is the highest. That is 2.44 and 1.02 higher than the average of total province. XiangNan-section is the lowest. It is only be 8.70. The landscape Pattern indexes of different Landscape subregion of HuNan indicated that DongTing lake hill-subregion controlled the changeing of DTL`S diversity index. Three Urban Agglomerations had the scarcity of eco-land problem in the nature resource sytem. It had the eco-space unbalanced problem in the Urban forest ecosystem. It had the industry unbalanced between city and village in the human and social system. Through analysis, We study out that the irrationality land is less. But it must increase the utilize efficiency of virescene aimed at the envirement of the three Urban Agglomeration is needed amendatory urgently. It must greening and beautifying and optimizing the envirement used the limited virescence space.(4)Result of The Forestry land landscape pattern of three Urban Agglomeration. Analysised on The Forestry land landscape pattern indicated that the landscape heterogeneity of CZT and XiangZhong region is the highest. The XiangNan region is lower. The Patch density of landscape and the Average patch area are 0.5/km2 and 186.57 hm2. Analysised on The Forestry land landscape Pattern indexes of different Landscape subregion indicated that the non-core of CZT controlled the landscape heterogeneity of the whole CZT. The forestry construction problems on the three Urban Agglomeration were as below. CZT`s is as drainage area lack of eco-isolation forestry and the trunk-road lack of defend Greenland. And subordinate Greenland construction lack of induction. DTL`s is as programming drop behind and the water area contaminated seriously. The forestry net of farmland can`t reach the defence request and the system function is declined because of the framework tend to be simplify. XNB`s is as the forestry sufferd the immoderate emploiture and the disaster frequently. The vegetation destroyed bring on the surface soil destroyed and the soil nutrition declined and bring on the rocky desertification problem etc.(5)Through study, we give much advice on the the Hunan urban agglomeration forestry building. Firstly, we should classify the Urban when programming and guidencing. It should building urban forest according to the physiognomy and land utilization type. It can make the different urban forestry building to get reasonable programming. Secondly, it should building much more road greening according to the railway and highway. It can make the greening as a whole with the city and suburb and village. Thirdly, it should building the key eco-area of The Urban Agglomeration. And mark out four kind of eco-transition area to describe it. It is eco-industry garden, the eco-landscape travel area, the foodstaff produced garden, the eco-protection garden. Fourthly, It must building up the weakenss area. That is village forestry building. It included village house forest, the courtyard forest, the geomantic forest, the village water-side forest, the village backroad forest.â‘ The key of ChangZhuTan Urban Agglomeration forestry building. It shoud pay much attention to the separated forest and water-soil preserved forest along the drainage area. It should building the eco-separated forest of the city. It should build much more forest gardens according to the suburb forest resource. It should sparkplug the greenness travel conception to protect the ecology and the envoirment. It should consummate the guarantee system of the Urban Agglomeration forestry building. So it can fulfil the programe successfully.â‘¡The key of DongTing Lake Urban Agglomeration forestry building. It should resume the wetland eco-system through framed scientific and effectively layout and measures. It should building much more Schistosomiasis preventing forestry. As it can prevent snails and the diseases. It should consummate the farmland defending forest. As it can maintain the safety of the Urban Agglomeration. It should make the forestry integrated with Industry, with economics, with herd, with traveling. So it can make the Urban Agglomeration forestry Industry had better development.â‘¢The key of the Basin Urban Agglomeration forestry building. It should resume and consummate forestry resourse recur to the re-building of the disastered forest. It should resume and re-building the scraped mine`s vegetations. It should rebuild the Low-Quality and Low-Benefit forest and Closing Hillsides for Afforestation. It should build the separated forest of the city. It should pay attention to the comprehendsive treatment on the Karst rocky desertification through forest. All of it can strengthen defence and defend to the disaster of the Urban Agglomeration.