Construction method of subtropical eastern carbon sink forest based on the proportion of plant community traits and functions

A plant community and functional technology, applied in forestry, biological models, instruments, etc., can solve problems such as slow growth, discrimination of carbon-fixing tree species, and fierce competition in forest stands, and achieve the effect of solving early decline and enhancing stability

Inactive Publication Date: 2021-06-25
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly the following technical bottlenecks in the construction of subtropical eastern carbon sink forests: First, the current afforestation of subtropical eastern carbon sink forests takes traditional tree planting experience as a reference, and does not distinguish carbon sequestration tree species from the perspective of plant physiological and ecological functions, and then define plant communities Species composition and its ratio; secondly, in terms of afforestation methods, artificial planting is the main method of afforestation, and most of them are planted with positive fast-growing trees. After the young forests are closed, the stand competition is fierce, and a large number of positive species invade. , Poor ventilation, resulting in high mortality, slow growth, difficult regeneration, premature senility, low quality, and low efficiency in young forests, making the constructed "carbon sink" forest part a "carbon source" forest; in addition, in In terms of tending methods, the traditional stand tending method is the main method, often resulting in frequent occurrence of forest diseases and insect pests, poor tree quality, weak stand stability and resistance, and it is difficult to form a healthy and stable "carbon sink" mixed plants of different ages community

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  • Construction method of subtropical eastern carbon sink forest based on the proportion of plant community traits and functions
  • Construction method of subtropical eastern carbon sink forest based on the proportion of plant community traits and functions
  • Construction method of subtropical eastern carbon sink forest based on the proportion of plant community traits and functions

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Embodiment 1

[0032] Embodiment 1 (new model)

[0033] The implementation site is located in Tiantong Forest Farm, Yinzhou District, Ningbo City, Zhejiang Province. It is geographically located in Tiantong Nanshan (29°47'496"N, 121°47'780"E), with an altitude of 200m, red soil, land thickness ≤ 90cm, slightly acidic. The average annual temperature is 16.2°C, the average annual rainfall is 1386mm, the average annual evaporation is 1320mm, and the annual relative humidity is 82%. From July to October every year, it suffers an average of 2-3 tropical storms. The forest land was a low-quality Chinese fir plantation in the early stage, with a small amount of Sassafras regenerated, and the Chinese fir was harvested in the winter of 2000 for land preparation and reconstruction. The experiment period was from 2001 to December 2018.

[0034] This implementation process uses a subtropical eastern carbon sink forest construction method based on the ratio of plant community traits and functions provi...

Embodiment 2

[0056] Embodiment 2 (modification type)

[0057] The embodiment site is located in the valley area of ​​Nanshan, Tiantong Forest Farm, with an altitude of 160m, a slope facing west, a slope of 18°, red soil, soil thickness≤80cm, and slightly acidic. In the early stage, the forest land was a natural forest of secondary jujube and sweetgum sweetgum (45 years old forest). Due to the long-term enclosure of the forest, there were many sun-born depreciation species in the forest, dense shrubs, bamboos, vines, and grass, the quality of the forest was poor, and the productivity was low. It has become a low-quality and low-quality forest. In the winter of 2001, a 20m×20m sample plot was investigated on this stand, and in the spring of 2002, low-efficiency forest improvement was implemented.

[0058] In the above-mentioned typical woodland area, adopt steps 1 to 4 to select suitable carbon-fixing tree species, and according to the forest survey structure, keep the mature trees (diameter...

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Abstract

The invention discloses a subtropical eastern carbon sink forest construction method based on the proportion of plant community traits and functions. Structural equation model of trait composition and aboveground carbon storage, screening plant community types with significant carbon sink function, and selecting excellent carbon sequestration species according to the composition weight of plant community functional traits; according to the topography of the relationship between plant community functional trait composition and aboveground carbon storage Dependence, to further screen the best carbon sequestration species suitable for different site conditions; according to the weight ratio of the functional traits of the plant community, quantify the species quantity ratio of the target carbon sink plant community; finally, comprehensive plant community functional composition, quantity configuration, plant community The complete method of constructing high-efficiency carbon sequestration forests has been formed based on the distribution density, planting methods and young forest tending. It has the advantages of high carbon sink benefit, strong adaptability, good growth and low cost.

Description

technical field [0001] The invention relates to a method for constructing a carbon sink forest, in particular to a method for constructing a subtropical eastern carbon sink forest based on the ratio of plant community traits and functions. Background technique [0002] Forests absorb CO through photosynthesis 2 , and fix it in vegetation and soil, it has a good carbon sink function, and it can reduce CO in the atmosphere through forest carbon sequestration 2 The concentration is currently internationally recognized as an effective way to control climate warming. The plant community is composed of different life forms and functional plants. Under the same site conditions and management measures, the carbon sequestration capacity of its constituent species is the key factor determining the overall carbon sink process and size of the forest. Therefore, studying the carbon sequestration capacity of different tree species, screening and cultivating tree species with high carbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G23/00G06N3/00
CPCA01G23/00G06N3/006
Inventor 阎恩荣李修鹏田文斌杨同辉王良衍
Owner EAST CHINA NORMAL UNIV
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