Map making of environmental impact assessment based on remote sensing interpretation and GIS technology

《 Technical guidelines for environmental impact assessment ecological impact 》（HJ 19—2022） Coming soon , The map of ecological impact assessment is a necessary part of the ecological impact assessment report , It is the main basis of evaluation and an important manifestation of results , It is an important basis for guiding the design of ecological protection measures . Among many drawings , Land use map 、 Vegetation type map 、 Vegetation coverage map 、 Soil erosion map And other thematic maps need a lot of remote sensing and GIS technology

Remote sensing and GIS Technical analysis
Interpretation of eco-environmental impact assessment technology Workflow Remote sensing and GIS Technology and precautions Software （ArcGIS、ENVI etc. ） Introduce

Software installation and precautions

ArcGIS And data management
ArcGIS Interface and data loading data type 、 Data structure and data format be based on Geodatabase Construction of ecological environment database

ArcGIS documents saving

Projection and transformation of spatial data
Introduction to common map projection Projection transformation WGS84、 Beijing 54、 Xi'an 80 And countries 2000 Coordinate transformation

Data structure transformation 3.5 Data format conversion

ArcGIS Data editing and analysis
Data vectorization Data editing Data splicing and clipping Statistical calculation of vector data Buffer analysis

DEM Data download and processing be based on DEM Slope analysis of

ENVI And GIS Fusion technology and mapping

ENVI Interface introduction and basic operation Introduction to main remote sensing data Remote sensing image network resources 、 Download and read

Preservation of remote sensing images ENVI And ArcGIS Coupling operation Remote sensing image GIS drawing

ENVI Remote sensing image processing
Geometric correction of remote sensing images Mosaic of remote sensing images Cutting of remote sensing image

Fusion of remote sensing images Band combination of remote sensing images

Under the latest guidelines ： Based on remote sensing interpretation and GIS Practice and application of making maps for technical environmental impact assessment

ENVI Remote sensing interpretation of land use
Introduction to remote sensing information extraction technology Visual interpretation of remote sensing images and case explanation Unsupervised classification and case explanation

Supervision classification and case explanation Interpretation result processing and accuracy analysis

case analysis ： Interpretation of land use in Beijing based on remote sensing

ENVI Quantitative inversion of vegetation coverage

Remote sensing inversion method ENVI Band operation ENVI Atmospheric correction ENVI Radiometric calibration

NDVI And vegetation coverage calculation   case analysis ： Calculation of vegetation coverage in Beijing based on remote sensing