Ji'nan urban residents are trapped in "cement forest"
"urban greening is a reflection of economic and ecological disputes." Cao Changrui analyzed that many green belts and green belts were eventually occupied by high-rise buildings because greening did not create the most intuitive economic benefits.
Greenland is a little crowded
Ji'nan checkerboard district residents He Fengying was awakened by the roaring excavator in the district early in the morning. She walked to the window, the tall building, the gray tone of the clear color added to the construction of the dust let her out of the walk lost interest, even to buy breakfast is always quick to go back quickly. "Originally, there was a lawn on the east side of the plot, and then squeezed out to cover it." He Fengying told reporters.
the problems He Fengying encountered were also plaguing people in many cities, or because of the building of a parking lot, or because of the surrounding construction and demolition, the green space was squeezed by a little, and people were slowly trapped in the "cement forest".
statistical data released by Ji'nan City Bureau of parks and gardens show that in 2009, the green coverage rate of Ji'nan was 36.4%, the green land rate was 32.6%, and the per capita green space was 10 square meters. This is only an absolute figure, and does not include the uneven distribution of urban and Western greening.
Economic and ecological controversy
greening is like the "lung" of the city. The L ha broad-leaved forest can absorb 1 tons of carbon dioxide per day and release 0.73 tons of oxygen. One mu of wood can absorb 20 to 60 tons of dust a year. Trees can also reduce noise pollution. A 40 meter wide forest belt can reduce noise by 10 to 15 dB. Cao Changrui, an ecological expert at Shandong University, said, "the most intuitive feeling is that the temperature around the spring city park is about 3 degrees lower than the rest of the city in the city every summer."
"the dilemma of urban greening reflects the dispute between economy and ecology." Cao Changrui analyzed that many green belts and green belts were eventually occupied by high-rise buildings because greening did not create the most intuitive economic benefits.
Cao Changrui appealed that urban construction should not only pursue economic benefits but turn a blind eye to ecological benefits. "Now only a few roads, such as the Ma On Shan Road, can form the shade of the city. Like the broad trunk road of the ten road, it can be said that the trees are thinner than the yellow flowers, and the green shade that the citizens need can not be sought."
look forward to the city in the forest
"the most ideal state of the future is the city in the forest, not the forest in the city." Cao Changrui said that the distribution pattern of the green belt is very important for the greening effect. Not a large area is opened up. The vegetation can play a role. "The best pattern is the green space and the trees are distributed in all regions of the city, and the whole city is brought into a large natural environment."
according to the relevant person in charge of the Ji'nan municipal garden Bureau, Ji'nan has already started the plan for the construction of the forest city. From 2010 to 2015, the main urban area of the planning center will increase 27 thousand mu of public green space. The goal is that the majority of the citizens go out on average 500 meters of leisure green space.
the responsible person said that the provincial green coverage rate reached 37% this year, and the per capita green space occupancy rate was 10.2 square meters.