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Method for quantifying species composition differences of plant communities

A technology of plant community and biological differentiation, applied in the field of community ecology

Pending Publication Date: 2020-05-12
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is still a lack of an effective method to combine species number differences and biological differences between communities into a framework for quantifying community composition differences.

Method used

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  • Method for quantifying species composition differences of plant communities
  • Method for quantifying species composition differences of plant communities
  • Method for quantifying species composition differences of plant communities

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Comparing differences in the composition of forest communities at different developmental stages

[0029] The sampling survey location of this embodiment: Changbai Mountain National Nature Reserve, Jilin Province

[0030] (1) Selection of quadrats: According to the development stages of forests in the study area, randomly set 1 forest in secondary poplar birch forest (early development stage), secondary coniferous and broadleaf mixed forest (middle stage of development) and primary Korean pine forest (late stage of development). A 0.25 hectare (ie 50×50m) quadrat;

[0031] (2) Data collection: Investigate and record the names and quantities of all tree species that appear in each quadrat. The survey data are shown in Table 1:

[0032] Table 1 Statistical table of species composition in Changbai Mountain National Nature Reserve, Jilin Province

[0033]

[0034]

[0035] (3) Analyzing the biological differences of species among the sample plots: the biol...

Embodiment 2

[0047] Example 2 Comparison of differences in composition of forest communities at different altitudes

[0048] Sampling and survey location of this example: mixed coniferous and broad-leaved forest in Jiaohe Forestry Experimental Area, Jilin Province

[0049] (1) Selection of quadrats: In the study area, randomly set up a quadrat of 0.25 hectares (ie 50×50m) in the coniferous and broad-leaved mixed forests at 550m, 600m, 650m, 700m and 750m according to the altitude gradient;

[0050] (2) Data collection: Investigate and record the names and quantities of all tree species appearing in each quadrat. The survey results are shown in Table 3:

[0051] Table 3 Statistical table of species composition of mixed coniferous and broadleaf forests in Jiaohe Forestry Experimental Area, Jilin Province

[0052]

[0053]

[0054] (3) Analyzing the biological differences of species among the sample plots: the biological differences between species are represented by the taxonomic hierar...

Embodiment 3

[0071] Sampling and investigation sites of this example: poplar birch forest in the Xiaoxing'an Mountains of Heilongjiang, spruce forest in Xueling Mountains in West Tianshan, Xinjiang, and oak forest in Qinling Mountains, Shaanxi.

[0072] (1) Selection of quadrats: In the study area, a 0.25-hectare (50×50m) quadrat was randomly set up in Heilongjiang Xiaoxing’anling poplar and birch forests, Xinjiang West Tianshan Xueling spruce forests, and Shaanxi Qinling oak forests. ;

[0073] (2) Data collection: Investigate and record the names and quantities of all tree species occurring in each quadrat, the specific results are shown in Table 6;

[0074] Table 6 Statistical table of species composition of birch forests in Xiaoxingan Mountains of Heilongjiang, spruce forests of Xueling Mountains in West Tianshan Mountains of Xinjiang, and oak forests of Qinling Mountains of Shaanxi

[0075] aspen Birch Snow Ridge Spruce Sorbus tianshan sharp-toothed oak Quercus ...

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Abstract

The invention discloses a method for quantifying the species composition differences of plant communities. The method comprises the following steps: (1) selecting a quadrat; (2) collecting data; (3) analyzing species biological differences among the quadrat; and (4) analyzing the species composition differences of the plant communities. Compared with the prior art, the method has the advantages that the number difference and the biological difference between the species are considered at the same time, the problem that the biological difference between the species is not included when the community composition difference is calculated through community investigation data is solved, the community investigation work is not increased, meanwhile, the plant community species composition difference is reflected more comprehensively and accurately in a quantified mode, and the method is convenient to use and easy to use.

Description

technical field [0001] The invention relates to the technical field of community ecology, and more specifically relates to a method for quantifying the difference in species composition of plant communities. Background technique [0002] Differences in community composition reflect the spatial variation of species composition at a regional or local scale. Quantifying the difference in community composition is one of the key issues in the research fields of community ecology and biogeography. It can not only provide an explanation for the mechanism of biodiversity construction, but also monitor the response of community composition to global climate change and guide the management and management of ecosystems. Protect. [0003] Differences in community composition can be quantified by collecting species composition data at different sites within the study area. Currently widely used methods include: the Jaccard dissimilarity index based on the presence or absence of species...

Claims

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Application Information

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IPC IPC(8): G06F17/18G06Q10/06
CPCG06F17/18G06Q10/0639
Inventor 郝珉辉张春雨王娟范春雨赵秀海
Owner BEIJING FORESTRY UNIVERSITY
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