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A method and computer for health analysis of alpine meadow grassland ecosystem
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An ecosystem and analysis method technology, applied in computing, network data query, web data retrieval using information identifiers, etc., can solve problems such as inability to comprehensively and reasonably evaluate alpine meadow grassland grades
Inactive Publication Date: 2019-01-04
QINGHAI UNIVERSITY
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However, these traditional alpine meadow grassland evaluation models do not solve the nonlinear relationship between the alpine meadow grassland observation index and the alpine meadow grassland degradation level.
The purpose of alpine meadow grassland evaluation is not only to simply classify the degradation level of each index, but also to evaluate the level of alpine meadow grassland comprehensively and reasonably.
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Embodiment 1
[0181] The alpine meadow grassland ecosystem health analysis method provided by the embodiment of the present invention includes:
[0182] A. There is a decision index p in the goal and decision-making layer 1 ,p 2 ,...,p m , the network architecture layer under the target and decision-making layer has C 1 , C 2 ,...,C N index sets, where C i There are elements in
[0183] B. Based on the goal and the decision-making index p of the decision-making layer s (s=1, 2,..., m) as the criterion, with C j middle element e jk (k=1, 2,..., n j ) as the sub-criteria, the indicator set C i The middle index according to its relative e jk Indirect dominance comparison of the size of influence, that is, in the criterion p s The judgment matrix is constructed as follows:
[0184]
[0185] And get the weight vector by the characteristic root method
[0186] C. For k=1, 2.., n i Repeat the above steps to get the matrix W shown in formula (1) ij .
[0187]
[0188] A...
Embodiment 2
[0196] Such as image 3 , the alpine meadow grassland ecosystem health analysis system provided by the embodiment of the present invention.
[0197] include:
[0198] Hierarchical structure building block 1, which decomposes the target alpine meadow grassland ecosystem according to specific conditions and attributes of indicators, and constructs a hierarchical structure;
[0199] The healthy index score acquisition module 2 is to obtain N indicators for evaluating the health of alpine meadows and grasslands from the indicators of the index layer through calculation and analysis, and then assign the obtained N indicators for evaluating the health of alpine meadows and grasslands through the entropy weight method. The entropy weight of each index is obtained, and then N index scores for evaluating the health of the alpine meadow are obtained by calculation;
[0200] Health score value acquisition module 3, and then calculate the alpine meadow grassland health score value;
[...
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Abstract
The invention belongs to the technical field of agro-ecological assessment, and discloses a method for health analysis of alpine meadow grasslandecosystem, and a computer. The method comprises steps:establishing a judgment matrix for the mutual relation of the elements located at the network layer, and obtaining the limit super matrix and the weights of each bottom index by using the analysis method of the network structure. By comparing with the existing method, the data obtained by the invention is more comprehensive and reasonable, and therefore, the health status of the grassland can beaccurately judged. The invention is convenient and practical for technicians and farmers and herdsmen, can effectively guide grass-roots technicians and farmers and herdsmen to carry out reasonable utilization and scientific management of the grassland, maintain the health status of the grassland ecosystem, and lay a foundation for the sustainable development of the grassland animal husbandry andthe sustainable exertion of the grassland ecological function.
Description
technical field [0001] The invention belongs to the technical field of agricultural ecological evaluation, and in particular relates to an alpine meadow grassland ecosystem health analysis method and a computer. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] The alpine meadow grassland has an average annual temperature of 1.1°C and an average annual precipitation of 752.4mm, mainly concentrated in May-September. The annual accumulated temperature ≥ 10°C is 3220°C. There is no absolute frost-free period, and it belongs to the alpine and humid area. The vegetation is subalpine meadow and swampy meadow, the building species are Cyperaceae and Gramineae, and the soil is subalpine meadow soil and meadow fluvo-aquic soil. [0004] The natural grassland ecosystem is an important basis for the development of animal husbandry and is of great significance to the protection of biodiversity and the maintenance ...
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