In the spring of 2020, the greening department of yangzhou tried to plant 100 trees on the west bank road and heung city west road. It is hoped that, once this species has been recognized by the general public, it will be extended to other roads. Four years later, these trees have grown up and are recognized by some citizens, but have not been replanted on other roads. On 5 november, yang zion/twixl journalists conducted an in-depth interview。
It's a tree of the sidewalk
The citizens are dissatisfied with the use of the tree as a sidewalk
The tree, also known as the tree, the tree, the tree, the valley tree, the plum tree, etc., is made of the plum tree and leaves and leaves. Pyramid trees are drought-resistant, salin-resistant, easy to grow, seeds can be sowed by birds, spread widely, branches are numerous, roots are developed, leaves are beautiful, wind-proof sand and the environment greens well. And the poles of its fruit are glamorous, and its wood is strong。
On 5 november, yang ziqiang/twiu cow journalist came to the non-motorized driveway on the east side of the blanche experimental school and observed that the saplings planted that year had become weather, that the trunks had almost child fists, and that the crowns on both sides of the road were “handing in hand” in the air, which had had a good shade. In addition, journalists observed that the thick dust was absorbed on the shrouds of twilight leaves, which had a better effect on dust. The journalists saw the branches of the twigs with dried red fruit and traces of the fruit being trampled on the ground。
The fruit of the tree
For these “test trees” on the brahma road, there is a disparity between the nearby households and the passing citizens. "it's good to enjoy the coolness it brings in the summer, and the leaves fall out of the winter without covering up." ms. Sun, who was taking her children to school every day, was deeply touched by the tree, which was supposed to warm the passers-by winters, send cool summers and bring dust to the streets. Mr. Feng, who grew up in the countryside as a child, told reporters that the tree used to come out of his home after a lot of it had been in the front house, and that the fruit was a good feed for pigs, with a particularly strong life force, that “the road is narrower, the normal side trees are difficult to grow and the tree should be a good choice”
“at autumn, the fruit of the tree matures, the fruit falls on the tree, the wheel is dirty, the fly is provoked, and sometimes it falls on the human body, which is uncomfortable.” ms. Wang has some minor words about the tree on the side of the road, and she believes that the choice of the sidewalk tree should not at least affect the normal passage of cyclists and pedestrians under the tree. Sometimes, birds who eat fruit on trees also pull their shit on people and feel sick。
The experts believe that the twig tree is a small advantage
“four years ago, the sheng city west road planted the tree as a walker, as i know, and i personally disagree.” chen weiwon, managing director of the yangzhou horticultural society, explained that, despite its vital, drought-resistant and disease-resistant advantages, the tree could not act as a walking tree, with three main factors. One is that the trunk of the tree is bent and does not meet the condition that the tree on the sidewalk requires it to be straight, and that the tree shape and landscape are not working well. Second, although it has a good dusting effect, the fact that its fruit is prone to environmental contamination can also “attack” the citizens under the tree and give them poor experience. Thirdly, due to the vitality of the pelican tree, it competes with other trees for water, affecting the growth of other trees. In addition, pelicans tend to attract pests such as oxen. As a result, pelican trees should not be planted as urban walkways, either in the main urban path or in small numbers in peri-urban and rural areas。
Tree leaves
The city's green expert, sun guiping, also indicated that trees had advantages and disadvantages like people. The choice of side trees depends on their mainstream, i. E. The choice of the dominant tree species. It was assessed that, although adapted to poor growth environments, the argon trees overwhelm their advantages by their high environmental impact and poor landscape performance, so that they cannot be planted in urban areas and can be planted in small quantities on the outskirts of cities as special species. At present, trees, euphoria, platinum, oak, sauerkraut, silver almond, etc., which are widely planted in urban areas, are better tropic trees。
Janju chose to set these rules
What are the conditions that need to be met for the selection of tree species on the janzhou sidewalk? Chen weiwon introduced the 2018 edition of the yangzhou city road tree tree plan. Walk trees are wooded trees that are planted on both sides of the road in a way that provides shade. Because the growth of side trees is constrained by special urban environmental conditions, such as buildings, underground pipes, human flows, transport and others, the root parts can only grow within a limited range and the above part of the ground is under adverse environmental conditions. In addition, the multiple functions of the sidewalk trees will be met. Therefore, the requirements for tree species are strict, and there are five principles and five criteria for the selection of walk trees in accordance with the requirements of urban walk trees for the growing environment。
There are five principles for tree species planning:
1. Functional principle. The functional needs of urban roadwalk trees are addressed in the context of environmental ecology and sustainable development in conjunction with the yangzhou urban green land system plan (2014-2020) and related road laws, regulatory standards and documents, taking into account the immediate and medium-term greening effects。
Principles of coordination. A line is used to link the scattered “points” and “face” functions of the green land system in yangzhou. Micro-level emphasis is on broad quantitative effects and macro-level coverage of urban landscape needs。
3. Ecological principles. It combines native and exotic species, fast-born and slow-born species, eco-efficiency with economic benefits, and the principles of colouring, valuing and efficiency for sound planning。
4. Diversity principle. The tree species choose diversity, avoid monoculture, should be dominated by falling leaves, should be rationally planted, and should actively cultivate and select valuable plants。
5. The principle of safety. Due consideration is given to the fact that the upper part of the area is restricted by airlines, underground pipelines, buildings, and the choice of tree species for the roadways of the yangzhou city is tailored to the safety of traffic。
Five criteria for the path tree selection:
Be adaptable to the growing environment. Rapid growth and growth, straight trunks, straight tree ends, beautiful tree crowns, strong crowns and good shades, with the trunks having a high direct branch point (generally requiring more than 3. 0 m) to allow the vehicle to move safely。
2. Suitable for extensive management. More environmentally adaptable, less demanding soil, moisture, fertilizer, drought-resistant, pollution-resistant and more resistant to fumes, wind, pests and diseases。
3. Resisting pollution. The roots are deep, impenetrable, non-toxic, non-polluting, non-smelling, non-floating, clean trees, minor damage to road city facilities。
4. There are many sources of liveable seedlings. The transplant is carried out with a high rate of activity, a high birth rate and a rich seedland. It is easy to trim and control its high growth。
5. Meet tree quality requirements. Trees are of high quality, fully reflect urban style and local characteristics and have practical value and appreciation. I'm a correspondent, kang, yang zi zi / cow reporter, chen wing
Yes, sir
