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A Method for Calculating the Age of Mangrove Forests

A technology of mangrove and forest age, which is applied in the field of forestry technology and ecological protection, and can solve problems such as easy peeling of mangrove skin, inconvenient time for forest formation, and inapplicability of mangrove

Active Publication Date: 2018-02-13
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judgments about the age of mangrove forests are hardly involved
[0004] Regarding the method of judging the age of trees, there is currently only the "bark growth ring" method proposed by Zhao Zhongzhen and Tang Xiaojun in 1990, that is, to take a small piece of bark and observe the "bark growth ring" under a microscope to identify The age of the tree, and this method is most suitable for tree species whose outer bark is not easy to peel off and has obvious "bark rings", but the mangrove skin is easy to peel off
The most important thing is that this method is aimed at the age of a single tree, and it is not simple and easy to use to judge the forest formation time, and it is not applicable to mangrove forests at all.
Judgments based on experience, such as tree height, trunk, branch forks, and scars on trees, are too subjective, so a simple and easy method for judging the time of forest formation is needed to provide support for further research on forests and their systems

Method used

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  • A Method for Calculating the Age of Mangrove Forests
  • A Method for Calculating the Age of Mangrove Forests
  • A Method for Calculating the Age of Mangrove Forests

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Experimental program
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Effect test

Embodiment 1

[0021] The implementation site is located in Quanzhou Bay Mangrove Nature Reserve, Fujian Province, and the calculation was carried out on June 23, 2013.

[0022] (1) Collect soil samples and plant samples. Select tung tree plants with uniform growth in the upper reaches of the Luoyang River in the target area, and collect the lower surface soil Squeeze the package with a sealed bag; at the same time, collect the lower surface soil of the bare beach land closest to it. Then, 5 tung trees were randomly selected near the sampling point, and 10 to 15 mature leaves of each plant were collected from the top of the crown (sun leaves) and the lower part of the crown (shady leaves), mixed, squeezed and packaged in sealed bags.

[0023] (2) Determination of δ of soil samples and plant leaves13 c. Take the collected samples back to the laboratory in time, air-dry the soil samples naturally, grind them finely, pass through a 200-mesh sieve, and pack them into bags; bag. Subsequently...

Embodiment 2

[0033] The implementation site is located in Quanzhou Bay Mangrove Nature Reserve, Fujian Province, and the calculation was carried out on June 23, 2013.

[0034] (1) Collect soil samples and plant samples. Select the tung tree plants with uniform growth in the middle reaches of the Luoyang River in the target area, and collect the lower surface soil Squeeze the package with a sealed bag; at the same time, collect the lower surface soil of the bare beach land closest to it. Then, 5 tung trees were randomly selected near the sampling point, and 10 to 15 mature leaves of each plant were collected from the top of the crown (sun leaves) and the lower part of the crown (shady leaves), mixed, squeezed and packaged in sealed bags.

[0035] (2) Determination of δ of soil samples and plants 13 c. Take the collected samples back to the laboratory in time, air-dry the soil samples naturally, grind them finely, pass through a 200-mesh sieve, and pack them into bags; bag. Subsequentl...

Embodiment 3

[0044] The implementation site is located in Quanzhou Bay Mangrove Nature Reserve, Fujian Province, and the calculation was carried out on June 23, 2013.

[0045] (1) Collect soil samples and plant samples. Select candela plants with uniform growth in the middle reaches of the Luoyang River in the target area, and collect the lower surface soil Squeeze the package with a sealed bag; at the same time, collect the lower surface soil of the bare beach land closest to it. Then, 5 candela plants were randomly selected near the sampling point, and 10-15 mature leaves of each plant were collected from the top of the canopy (sun leaves) and the lower part of the canopy (shady leaves) respectively, mixed, squeezed and packaged in sealed bags.

[0046] (2) Determination of δ of soil samples and plants 13 c. Take the collected samples back to the laboratory in time, air-dry the soil samples naturally, grind them finely, pass through a 200-mesh sieve, and pack them into bags; bag. S...

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Abstract

The invention discloses a method for calculating the age of a mangrove forest. The method comprises the following steps that lower mulching of the mangrove forest, lower surface soil of the closest naked beach land and mangrove plant leaves are collected at a region to be calculated; the ratio (delta 13C) of soil organic carbon to the plant blade stable carbon isotope is measured; the naked beach land is used as a background value, and according to a relevant formula, the ratio of mangrove source organic carbon to soil organic carbon of the known forest age artificial mangrove forest region and the region to be calculated is calculated; then, the age of the mangrove forest is worked out. The method is simple and easy to implement, harmless to forest, capable of accurately calculating the age of the mangrove forest, and capable of being applied to judgment of the growth stage of the mangrove forest and other researches that the forest age needs to be cleared.

Description

Technical field: [0001] The invention belongs to the field of forestry technology and ecological protection, and specifically relates to a method for measuring and calculating the age of mangrove forests in coastal areas and estuaries. Background technique: [0002] Mangroves are woody plant communities that grow in the intertidal zones of tropical and subtropical coasts or estuaries. Mangroves are the last "ecological barrier" for the transition from terrestrial ecosystems to marine ecosystems. They have extremely important ecological functions for both land and ocean. They are known as "sea forests", "kidneys of the earth" and " Natural farms". Mangrove wetlands not only provide marine animals with rich bait and a good growth and development environment, but also become an important guarantee for the development of offshore fisheries and aquaculture, thereby providing humans with resources such as medicines, food, feed and wood, and have the ability to purify The functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/0098
Inventor 吴沿友王宗林张开艳姚凯王瑞饶森陆叶赵丽华李环刘丛强
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI