Grade evaluation method for ecological adaptability of afforestation tree species

A technology of grade evaluation and adaptability, applied in the field of grade evaluation, it can solve the problems of unclear indicators, large errors, and insufficient quantification.

Inactive Publication Date: 2015-07-15
SHANXI UNIV
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Problems solved by technology

[0004] In order to solve many inconvenient problems such as unclear indicators, insufficient quantification, and large errors in the current evaluation process of ecological adaptability of tree species, the present invention provides a method for evaluating the ecological adaptability of afforestation tree species. Through the selection of clear indicators, each A specific formula for calculating the level of ecological adaptability is proposed.

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  • Grade evaluation method for ecological adaptability of afforestation tree species
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  • Grade evaluation method for ecological adaptability of afforestation tree species

Examples

Experimental program
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Embodiment 1

[0044] Embodiment 1: the ecological adaptability investigation method of different tree species

[0045] The research site is located in Pingshun County, Changzhi City, Shanxi Province. The forest type to be studied is selected in the research site, and several sampling areas of 20 m × 20 m are used as sample plots for investigation in typical areas. Local representative tree species North China larch and Chinese pine are selected. , white bark pine, arborvitae, juniper, sylvestris pine and other tree species corresponding to the forest types to conduct arbor surveys, randomly select 10 trees for each tree species to measure tree height, diameter at breast height, and height under living branches, and record each tree at the same time Freeze damage, drought damage, insect damage, crown vigor, bark condition, and trunk shape of the tree, and the severity of the damage to the trunk as the main sign of adaptability.

[0046] According to the tree adaptability grade evaluation for...

Embodiment 2

[0050] Embodiment 2: the ecological adaptability investigation method of different strains of the same tree species (poplar)

[0051] The research site is located in Guopingdian Nursery, Yongji County, Yuncheng City, Shanxi Province (three experimental sites of Jinshatan, Tunliu, and Xiangfen). Adaptability in the South Basin. For the black poplar school ( Aigeiros Duby ), Qingyang School ( Tacamahaca Spach ) and 204 inter-pai hybrid clones, Populus alba ( Populus alba L. ) and 4 hybrid clones, and 123 clones of cooperation poplar, poplar poplar, Beijing poplar and Qingyangpai were collected through the Institute of Forestry, Chinese Academy of Forestry. In 1987, 115 clones were selected for experimental observation. Select 10 trees for each strain to measure tree height, diameter at breast height, and height under living branches, and record the frost damage, drought damage, insect damage, crown potential, bark condition, and trunk shape of each tree at the same time. ...

Embodiment 3

[0062] Example 3: Investigation method of ecological adaptability of European aspen in different pilot sites in Shanxi

[0063] Six pilot sites, Jinshatan, Taiyuan, Qixian, Pingsong, Dananping, and Hujiayu, were selected to investigate the ecological adaptability of European aspen, and 10 European aspens were randomly selected from each pilot site to conduct tree height, diameter at breast height, live branch At the same time, record the frost damage, drought damage, insect damage, crown power, bark condition, and trunk shape of each tree, and take the damage of the diameter and trunk as the main indicator of adaptability.

[0064] According to the tree adaptability grade evaluation formula, the ecological adaptability of the above-mentioned different tree species was calculated, and the ecological adaptability evaluation results of different pilot sites of Populus aspen were obtained as follows:

[0065] Table 12 Ecological adaptability of European aspen in different pilot si...

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Abstract

The invention relates to the field of grade evaluation of afforestation tree species, in particular to a grade evaluation method for the ecological adaptability of the afforestation tree species, and solves the problem that the current tree species ecological adaptability evaluation is undefined in indexity, insufficient in quantization degree and bigger in error. The method comprises the following steps: firstly, adopting a field survey method namely an ecological adaptability survey method for the same experimental point and different tree species, the same tree species and different strains and the tree species at different experimental points; secondly, for tree species researched by three survey methods, assigning values for freeze injury, drought injury, insect injury, crown growth potential, bark condition and stem form of the tree species, and then performing grade separation according to adaptability grade evaluation indexes. The method provides an approach for comprehensively evaluating the ecological adaptability of the tree species by scientifically and comprehensively selecting external characteristics capable of embodying the growth conditions, the growth potential and the health conditions of trees as evaluation factors, evaluating and marking the grades of all the factors and reasonably judging the weights of the evaluation factors in an evaluation system.

Description

technical field [0001] The invention relates to the field of grade evaluation of afforestation tree species, in particular to a method for grade evaluation of ecological adaptability of afforestation tree species. Background technique [0002] For a long time, my country's afforestation tree species are single, the stand structure stability is poor, the comprehensive benefit is low, and the domestication and introduction of tree species are difficult, which has been an important bottleneck restricting the selection of suitable tree species and their combinations for afforestation. According to relevant domestic and foreign materials, the ecological adaptability evaluation of tree species includes the evaluation of a single tree species, the evaluation of the same tree species, and the evaluation of multiple tree species. For the evaluation of the ecological adaptability of a single tree species, it is usually to investigate the growth status of a certain tree species under d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/02
Inventor 余敏李新平
Owner SHANXI UNIV
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