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A method for evaluating the contribution of human activities to mountain environment change

A technology for human activities and environmental changes, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of difficulty in quantitatively distinguishing the contribution of mountain environmental changes, limited monitoring range, and high monitoring costs, achieving low cost. , the evaluation process is fast, the effect of a large sample range

Inactive Publication Date: 2017-09-26
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology

These methods have the disadvantages of long monitoring period, limited monitoring range, high monitoring cost, etc., and it is difficult to quantitatively distinguish the contribution of human activities and natural processes to the change of mountain environment

Method used

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  • A method for evaluating the contribution of human activities to mountain environment change
  • A method for evaluating the contribution of human activities to mountain environment change
  • A method for evaluating the contribution of human activities to mountain environment change

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Embodiment Construction

[0019] Taking the upper reaches of the Minjiang River as an example, the arid valley in this area is selected as the characteristic line. In the typical section of the arid valley in the upper reaches of the Minjiang River, GPS is used for field positioning and surveying, and engineering surveying and mapping technology is applied to accurately measure the boundaries and landmarks of the arid valley. Create image interpretation flags.

[0020] The remote sensing data used include four aspects: (1) SPOT-2, 4 (1999, 10 m panchromatic band and 20 m multispectral band), SPOT-5 (2008-2009, 5 m panchromatic band and 10 m multispectral band) spectral band) image data; (2) digital elevation model (DEM); (3) Google Earth 3D stereo image; (4) 1:100,000 Chinese vegetation atlas.

[0021] Data processing: ERDAS IMAGINE 9.2 is used for geometric correction and resolution fusion of SPOT remote sensing images. Taking the control points taken in the field as geographic reference, the multis...

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Abstract

The invention provides a method for evaluating the degree of contribution of human activities to the mountain environment change. According to the method, feature lines or strips such as, snow lines, frozen earth lines, forest lines and tree lines, which are sensitive to the action of external force in the mountain environment are selected, a GIS technology and an RS technology are applied, the distribution patterns of the feature lines or strips in different periods are analyzed in a quantitative mode, a spatial distribution graph of the feature lines or strips is made through accurate registration with DEM, displacement differences of the feature lines or strips in a settlement area and a position close to a non-settlement area are compared, and thus the cultural process and the natural process of displacement of the feature lines or strips are described and distinguished in a quantitative mode. The method is small in workload, easy to implement, low in cost, high in speed of the evaluation process and wide in sample range, a basis is provided for exploring adapting the plateau mountainous environment change to the human, and a scientific basis is further provided for scientifically evaluating the effects of ecological construction, such as converting cultivated lands into forests.

Description

technical field [0001] The invention relates to a method for evaluating the contribution of human activities to mountainous environment changes, in particular, using mountainous feature lines to quantitatively describe the impact of human activities on land use / cover changes. Background technique [0002] The mountain environment has become the most strongly affected and sensitive area in the rapid global change. The change of the mountain environment is driven by the intertwined system of human activities and natural processes, and this change is intuitively reflected in the land use of the mountain area. / cover changes. According to the nature of the driving force of land use / cover change, it can be divided into natural driving force and human driving force. The driving effect of the natural driving force is long-term, slow and universal, while the driving effect of the human driving force is opposite to the natural driving force, and its effect is short-term, fast and ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G06Q50/00
CPCG06Q50/00Y02A90/10
Inventor 王青李富程郭亚琳
Owner SOUTHWEAT UNIV OF SCI & TECH
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