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Comprehensive diagnosis and risk evaluation method for regional vegetation recovery

A technology for vegetation restoration and comprehensive diagnosis, applied in data processing applications, instruments, calculations, etc., can solve the problem of insufficient methods for comprehensive diagnosis and risk assessment of regional vegetation restoration

Active Publication Date: 2019-04-16
XIAN UNIV OF TECH
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Problems solved by technology

At present, there are still relatively few methods for comprehensive diagnosis and risk assessment of regional vegetation restoration.

Method used

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  • Comprehensive diagnosis and risk evaluation method for regional vegetation recovery
  • Comprehensive diagnosis and risk evaluation method for regional vegetation recovery
  • Comprehensive diagnosis and risk evaluation method for regional vegetation recovery

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Embodiment Construction

[0077] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0078] Based on mathematical statistics and probability theory methods, the present invention proposes a comprehensive diagnosis and risk assessment method for regional vegetation restoration, and the specific operation steps are as follows:

[0079] Step 1. Determine the study area and collect annual NDVI remote sensing data in the study area

[0080] Through the ArcGIS software Spatial Analyst Tools module Local tool Cell Statistics according to the maximum value synthesis method to gradually obtain the monthly and seasonal NDVI time series raster data, and finally obtain the annual NDVI time series raster data, and then through the ArcGIS software Spatial Analyst Tools module Map Algebra tool Raster Calculator converts annual NDVI time series raster data into vegetation coverage time series raster data.

[0081] Step 2. According to the c...

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Abstract

The invention discloses a comprehensive diagnosis and risk evaluation method for regional vegetation restoration, and the method specifically comprises the following steps: determining a research region, and collecting annual NDVI remote sensing data of the research region; determining space-time variation characteristics of the vegetation coverage, trend characteristics of annual vegetation coverage changes, persistence characteristics of the annual vegetation coverage changes, abrupt change characteristics of the annual vegetation coverage changes and distribution function characteristics ofthe annual vegetation coverage changes; and establishing a risk level corresponding to the vegetation coverage, calculating the risk occurrence probability of each vegetation coverage level in each vegetation coverage pixel, the risk level corresponding to the vegetation coverage level with the maximum risk occurrence probability being the vegetation recovery risk level of the pixel, and determining that the region is the risk region of the level. According to the comprehensive diagnosis and risk evaluation method for regional vegetation recovery, diagnosis and risk evaluation are efficientlycarried out on the vegetation recovery of the research region by means of less data, and a scientific basis is provided for regional ecological construction.

Description

technical field [0001] The invention belongs to the technical field of ecological evaluation methods, and relates to a comprehensive diagnosis and risk evaluation method for regional vegetation restoration. Background technique [0002] With the modernization of our country, the continuous progress of the scientific and technological revolution, the continuous improvement of the economic level, the rapid development of industrialization and urbanization, people are more and more yearning for a better life in the ecological environment, and the current problems of regional soil erosion, desertification and drought are still Serious, resource and environmental problems continue to be highlighted, and ecological and environmental governance is imminent. [0003] Vegetation plays an important role in the energy exchange, water cycle, carbon cycle, biogeochemical cycle and maintenance of the surface ecosystem. The restoration of regional vegetation is of great significance to the...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/0635G06Q10/06393
Inventor 任宗萍贾路徐国策李占斌李鹏时鹏王飞超王睿王添张译心王斌杨倩楠
Owner XIAN UNIV OF TECH
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