census members are making nine pine measurements in the four MENA scenic spot. (Photo by Xue Liangcheng)
this dry willow near Daming Lake is not easy to grow into a "ancient tree". (Xue Liangcheng)
from January last year, the Ji'nan city's ancient tree and name wood digital information management system has been set up and studied by the Qianfo Hill scenic area. The survey team is composed of the backbone forces, and the most systematic and comprehensive large-scale census of the ancient tree and name wood of Ji'nan has been carried out. In March 15th, reporters followed the census team to the four pagoda scenic area of Liu Bu Town, which is also the first stop of the census team stationed in the southern mountain area. In only one morning, 22 new trees were discovered.
how thick is the "bottom" of the ancient tree and name wood in Ji'nan? The largest census in history has quietly launched
"ancient tree and name wood is the witness of history, which is the invaluable treasure left by the natural world and our predecessors." It not only has the value of landscape greening, but also the vitality of the 'green antique'. At the same time, it has important historical value to study the natural changes of climate, soil and water, air and so on for thousands of years. The protection of ancient and famous trees is not only for the needs of the ecological environment, but also for the protection of the ancient civilization and cultural heritage of a place. The responsible person in Ji'nan City Garden Afforestation Bureau said that the research of Ji'nan ancient tree and name wood protection subject to the Qianfo Hill scenic spot is an opportunity to open the largest scale of ancient tree and name wood census in advance in the whole city, and the census will fully update the previous basic data and graphic information and master the first hand capital of the ancient tree and name wood resources. In order to provide accurate and accurate technical support for the protection management and development and utilization of ancient tree and name wood in the future, the scientific and advanced ancient tree and famous wood electronic information files, including websites and electronic maps, are gradually established.
it is understood that Ji'nan has carried out several surveys of ancient and famous trees. The census data in 2003-2004 years were 1928, and the census data in 2008 was 2196. At that time, due to factors such as labor, capital and technology, data were not very comprehensive and objective. The census has been launched ahead of schedule in January last year. Up to now, the survey team has nearly ten thousand kilometers, basically completed the Changqing, Pingyin, calendar, Tianqiao, Huaiyin, city and a few large city parks in the early stage of the survey.
data collection on the satellite positioning various information full access to electronic files
census team leader, deputy director of the Qianfo Hill scenic spot Wang Dawei introduced, the earlier record of the ancient tree and name wood is mainly paper material, should not be preserved, read, the update is also more complicated. In this survey, the information of ancient tree and name wood should be fully electronic, and the tree, tree age, tree height, height, height, growth and so on are entered into the database, and the website will be opened in the future for the citizens to inquire about the situation at any time.
in addition, in order to ensure the accuracy of the census, the survey team also adopted the GPS satellite positioning, recording the latitude and longitude coordinates, the maximum error is not more than 3 meters. "Now we need to visit ancient tree and name wood to introduce the road, so long as this coordinate can be found here." Wang Da for introduction, the ancient tree and name wood census and spring census procedures, the content are basically the same: scene photo, the measurement of latitude and longitude coordinates, DBH tree circumference, and record the surrounding environment, and later archiving, classification, listing. "Do not belittle this card, and with it, no one dares to arbitrarily hack and cut down, or equal to the" amulet "for them.
"ecological first town" is not only the most famous spring water, but the same number of ancient tree and name wood is the same number of first
estimated, in the four pagoda scenic spot nine pine has 2000 tree age, no accident, it will still occupy the Ji'nan ancient tree "old life star" head of the chair.
, however, according to the Sun Guangli section of the gardening Bureau of the Licheng District, in addition to nine pine, in the old version of the ancient tree and name list, there are 75 in the calendar, but the actual number is far more than that. With the expansion of the census and the improvement of the technology, the final number will be much more than the existing number. All the towns in the southern mountainous areas, such as Liu Bu, Xi Ying, Naka Miya and Cai Shi, belong to "rich ore". On the 15 day, only in the four pagoda scenic spot of Liubu Town, the census team identified 22 old trees in the morning.
reporter has been involved in the census of the famous spring last year. Liu Bu Town is recognized as the richest town in Ji'nan spring water, more than 100 newly discovered springs are known as "the first town of ecology". And this ancient tree census found that the ancient and famous trees resources in the town are also very rich. Liu Bu Town government officials believe that this is mainly due to the good ecological environment of Liu Bu and abundant water resources, and where water is available, the growth of trees is generally good.
Wang said that the planned census time in Liubu is three to four days. Now it seems that the preliminary estimate will take about two weeks. Before that, the census team spent nearly two weeks in Huayang palace, Huashan, and found more than 80 ancient trees.
the size of the ancient tree group of Chinese chestnut trees in the west, there is a dry willow in the rare Daming Lake which is the only city tree
> "A represents more than 300 years of trees, expressed in red nameplate; B represents 100-300 years of trees, expressed in green nameplate; C represents the name wood, and is expressed in blue nameplate. The numbers behind letters are the codes of counties and cities. 1 represents the calendar, and 2 represents the market. " If I had not listened to the introduction of the census team members, I really don't know that those cards hanging on the tree still contain so much knowledge.
according to the "implementation plan for strengthening protection of ancient tree and name wood" issued by the national Greening Committee in 1996, the ancient tree and name wood is divided into two kinds of ancient trees and famous trees. The trees are called ancient trees for more than 100 years, and the tree is named as one of the following conditions: historical value and commemorative significance; tree species are precious, rare at home and abroad; tree shape Peculiar, rare at home and abroad; key protected species stipulated by the state. This survey is also divided into two parts of ancient and famous trees.
survey found that in ancient trees, the number of Platycladus orientalis has unparalleled advantages, accounting for more than 60% of the total, like 345 ancient trees in Qianfo Hill, 330 of which are cypress trees; secondly, Sophora japonica, which also accounts for a considerable proportion. In addition, there are ginkgo, Robinia pseudoacacia, pomegranate, Pinus tabulaeformis, Juniperus and other species. It is worth mentioning that in the town of Xi Ying, there is a special tree species, that is, chestnut tree. The age of the tree is between 300 and 1000, the number is 102, and the size is very rare in the country.
the reporter also noticed a phenomenon: Willow as a city tree in Ji'nan, including the old version of the list and the census, only the Daming Lake scenic spot only "rich fruit only" a 300 years of dry willow. In this regard, garden experts analysis, willow is prone to diseases and insect pests is a fatal cause.
according to the census of the major city parks that have been completed, the Qianfo Hill scenic spot is the most abundant, including 1 thousand year old trees, 12 trees over three hundred years and 345 ancient trees and famous trees, followed by Zhongshan Park and 93 ancient trees; the most famous trees and 167 trees of the spring city park are the same as the "strength" of the Daming Lake and Baotu Spring park. The ancient trees and famous trees were 16 and 17 respectively. Among the
name wood, the Ji'nan zoo has the only one hundred year old Pistacia tree in the city's city, and a rare tree, the Chinese tallow tree, is a rare tree in Qianfo Hill. In addition, "Yuan Hongyu has Han Fuju's" palace, "when he was in Shandong to organize barren hills afforestation, it is said that he personally planted a black pine. Wang said the black pine is also expected to enter the new list.
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there are many ways to measure tree age, but also pay attention to "humanized"
how to confirm the age of a tree? The head of the census team introduced the method of measuring the age of trees a lot, but this survey has taken a more "humanized" way to avoid harm to trees.
Wang said, some can be directly inferred according to the relevant historical records, in addition to the tree heart and the carbon 14 year method, but drilling tree heart damage to the ancient trees, after the test, will leave a tree hole, it is easy to cause decay and disease and insect pests, "find out how old the tree, this tree is finished." In addition to the high cost, the carbon 14 dating method has certain damage to trees. So this census mainly adopts data comparison method.
data comparison method is developed by experts according to the characteristics of the north, especially Shandong. For example, according to the standard, the bust of cypress and white pine is more than 30 centimeters, five angles maple, Pinus tabulaeformis and monarch are more than 40 cm, Ginkgo biloba and tassel are more than 50 cm, and Sophora japonica, elm, and saponins are more than 60 cm, which can be identified as 100 year old trees, and more than 300 years are higher, like cypress, Pinus white pine and seven leaf tree to 60. Cm, Pinus tabulaeformis 70 cm, ginkgo, Sophora japonica 90-100 cm. "Of course, this is not absolute. It needs to be treated differently. The cypress trees on the rocks and the cypress grows in the soil. Even as long as the age of the tree, the diameter of the breast may be very different." 銆�