Construction and verification methods of landscape ecological vulnerability index
A construction method and vulnerability technology, applied in the field of ecological environment monitoring, can solve the problems of insufficient attention, ignoring the rationality of combining subjective and objective, and the lack of scientific methods to verify the rationality of the construction of the vulnerability index, so as to achieve effective management of the ecological environment, Accurately obtained effect
Active Publication Date: 2019-01-18
HEILONGJIANG INST OF TECH
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Problems solved by technology
But there are still some problems, for example: 1. The landscape-based ecological vulnerability assessment system does not pay enough attention to human disturbance factors
2. In terms of weight assignment of indicators, the rationality of combining subjectivity and objectivity is ignored
3. Directly use the constructed vulnerability index for vulnerability calculation and analysis, and there is no scientific method for the rationality verification of the necessary vulnerability index construction
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Embodiment Construction
[0029] The construction method of the landscape ecological vulnerability index described in this embodiment is a method of obtaining the landscape ecological vulnerability index by weighting the landscape vulnerability index and the population pressure index. Specifically, the following steps can be used to achieve, see figure 1 Shown:
[0030] Obtain remote sensing images and non-remote sensing data of the area to be evaluated;
[0031] Based on the comprehensive principle of landscape ecological classification and the temporal and spatial distribution characteristics of regional landscapes and remote sensing images, generate the landscape type distribution map of the area to be evaluated;
[0032] Extract and calculate all relevant landscape pattern indexes in the map according to the landscape type distribution map, and then retain the first m landscape pattern indexes according to the method of principal component analysis;
[0033] Divide the landscape type distribution...
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The construction method and verification method of the landscape ecological vulnerability index relate to the field of ecological environment monitoring technology, and specifically relate to the construction method of the landscape ecological vulnerability index in the ecological environment detection. The construction method adopts landscape vulnerability index and population pressure index to construct the method of obtaining landscape ecological vulnerability index, which obtains the corresponding ecological vulnerability index according to the regional population disturbance index, population pressure index and landscape vulnerability index of each landscape. The verification method is to obtain the ecological vulnerability indices of two periods in the same region by using the above-mentioned method, Then, the corresponding change values are obtained, and the weighted values of landscape type change grades in two periods are obtained. The SPSS statistical software is used to carry out regression analysis on the weighted values of landscape type change grades and the change values of landscape ecological vulnerability index, and the correlation between the two values is verified. The invention is suitable for constructing landscape index, constructing ecological evaluation system and verifying related system.
Description
technical field [0001] The invention relates to the technical field of ecological environment monitoring, in particular to a method for constructing landscape ecological vulnerability indicators in ecological environment detection. Background technique [0002] The issue of environmental change and sustainable development has attracted increasing attention from the scientific community. The vulnerability of the ecological environment reflects the degree of disturbance and vulnerability of the ecosystem. Landscape pattern is the comprehensive expression of landscape heterogeneity in space. Landscape pattern index and regional The vulnerability of the ecological environment has a high correlation, and human disturbance is also an important factor in the vulnerability of the ecological environment. The assessment of ecological vulnerability and its dynamic changes based on landscape pattern-population pressure not only helps to find out the environmental problems and their main...
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Login to View More IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/06393G06Q50/26
Inventor 张玉娟曲建光王强
Owner HEILONGJIANG INST OF TECH