The Development Current Situation And Countermeasure Of Urban Afforesting And Greening In Yinchuan City

Yinchuan is located in the middle of China, little rain, and high soil salinity. The hard natural conditions make the landscaping difficult in Yinchuan. The ecological construction and landscaping is the best development period from 2000 year to now.The author deals with the landscaping work from 2006 year to now. The author is familiar with the Yinchuan city virescence policies, the virescence development concepts and has the experience of virescence management and construction. The author engages in the nursery management work directly, can hold the ecology and biology characteristic of landscape nursery-stock growing. At the same time, the author participants and instructs the landscaping engineering construction, collects the engineering construction information and take the photographs. The author has an investigation for the green plants species and situation from 2005 to 2007 and analyzes the problems in Yinchuan. According to the whole development aim, guiding ideology, urban forestry development keystone and the urban afforesting and greening problems of urban forestry in Yinchuan, the author has the following study results.1. The covering area of urban afforesting and greening is 3,512hm2, built-up afforesting and greening covering area of 2,294hm2 is included. the area of urban green space is 3,346hm2, built-up urban green space area of 2 189hm2 and urban public green space area of 589hm2are included in the end of 2005. The built-up afforesting and greening coverage rate of Yinchuan is increased from 22.01% to 24.15% from 1999 to now. The built-up green space rate is 23.06%. The per capita public green space area is increased from 3.4m2 to 7.45m2 from 1999 to now. The road planting is 253 kilometers and the road green space area is 94hm2.2. According to the statistical investigation, there are 85 typical tree species in Yinchuan city. There are 466 tree species that can be planted in Yinchuan city, 243 tree species that can be planted well are included. At present, there are 30 tree species that can be widespread planted in the road space. The main trees are Cupressus funebris, Picea asperata etc, the main shrubs are Syringa oblate, Forsytia suspense, etc. The main grasses are Papaver rhoeas, Pharbitis indica etc.3. The urban afforesting and greening main problems are: roadside trees and some species are In a low state, the characteristics are not prominent. There is randomness in the choice of roadside trees. The considering deficiency of long-term benefits and ecological benefit are in the green space trees configuration, only paying attention to landscaping effect, the native tree species carry no weight, the configuration of hardwood and evergreen tree, the native tree species and new species, fast-growing tree and slow-growing tree are not reasonable.4. The author put forward the development countermeasure and suggestions. The characteristic should be noticeably, the afforesting and greening species should be abundance and manifesting the diversity of road green space. The introduce of new species should be active, the special ornamental trees should be development and utilization. It should increase management and maintenance level, reduce the plant disease and insect pest and prolong the trees life. The season color diversification should be considered in the trees configuration. The solid afforesting and greening should be developed and enhance the afforesting and greening rate of coverage.