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Post Fire Vegetation Monitoring System
Updated automatically every 5 minutes

Version No. 01 | Last Edited: March 2019

Post Fire Vegetation Monitoring System (PFVMS)

Version 1.0

© 2019, SIG-GIS

User’s Guide

Contents:

  1. Introduction

  1. Authentication

  1. Map Page

  1. Analysis Page

  1. Contact Us/Feedback

1. Introduction

The Post Wildfire Vegetation Monitoring System uses Google Earth Engine to provide users with current and past vegetation cover areas burned by wildfire. The system allows users to instantly determine the cover of several vegetation types, including evergreen forests, grasslands, deciduous forests, and barren lands. The cover estimates are made at 30m resolution but can be aggregated to any area of interest, including past fire perimeters, hydrological units (HUCs), or any user-defined area. Currently, the system covers Plumas County, California and was calibrated using the Moonlight Fire, which burned in 2007. This project was funded by NASA through its the Small Business Innovation Research Program.

                                        

Application Purpose



The Post Wildfire Recovery Monitoring System provides land managers regular systematic updates on areas that have burned by wildfire, including changes in vegetation cover, vegetation type, and a cover of bare soil, for any time period that data is available. The system integrates operational and legacy Landsat data (1984-Present) and produces land cover information at a 30-meter spatial resolution. The system provides near real-time updates with which is approximately once every 16 days.


Application Uses



This system is available online for no charge, providing both public and private land managers with near real-time information that may be used to better identify, plan, the budget for, and execute post-wildfire rehabilitation projects including post-wildfire harvest, reforestation, revegetation, and other erosion control activities. Users have multiple ways to easily calculate vegetation cover for their area of interest, including, a) by selecting one of the pre-loaded fire perimeters, b) selecting one of the pre-loaded hydrologic units, c) drawing a square, polygon, or rectangle within the user interface, or d) uploading any compatible shapefile (i.e. past treatments, prescribed fires, or plantations).

2. Authentication

Click on the Button to login or signup

Click on Login to login if you have the account already.

Click on Register if you like to register and make an account

3. Map Page

Home Page

Map Page

Description of the components:

Component

Purpose

Home Page

Provides a brief introduction to the information system

Menu Bar

Provides the access to Map View, Analysis, Login Page, and specific menus such as How to use, Technical Documents, Data Download, Feedback through contact us page.

Map View

Shows spatial maps/time series graphs above the base map layer

Time Slider

Allows the navigate through dates

Side Panel

Controls different data being shown in the Map View

Description of the components of Side Panel:

Component

Purpose

Land Cover Maps

The assemblage of the various bio-physical primitives produced as land cover maps

Download Data/Typology

  • Allows downloading the data that is displayed on the map page.
  • Allows downloading the typology CSV that can be used for visualization and assigning a class number.
  • Allows to download various GIS-based data like the burn severity data

Update Map

After you select/dis-select the primitive class that you want to assemble to make land cover maps, click on ‘Update Map’ to change the visualization.

Composite

Allows to visualize and download the cloud-free terrain corrected composite of the Landsat archive.

Season

Select the season between Fall and Summer for the composite.

Number of bands to visualize

Allows to visualize the 3-band composite or single band grayscale

Select Bands

Depending on the number of bands to visualize, you can select the band combination to try.

For example the natural color (RGB) or the false color (NIR, Red, Green)

Map Controls:

Map Control

Description

1

Full Screen

2

Google Street View

3

Change Base Map Layer

4

Toggle Area and Layer Control On/Off

5

Zoom In/Zoom Out

6

Time series. Slide through to change the year to visualize and download the data.

Area Control

Draw Your Own Polygon, Circle or Rectangle or upload the local KML,

and GeoJSON.

or select from the predefined area like a filter with the

  1. Fire Name
  2. Hydrological Unit (HUCs)
  3. Vegetation Burn Severity

Layer Control

The various layers displayed on the map can be controlled from the Layer

tab.

Map Control

Description

1

The layer name

2

Toggle layer visibility on/off

3

Control the transparency of the layer in the base map

Side Panel

Map Control

Description

1

Toggle on/off different assemblage class to produce the land cover maps

2

Click on ‘Update Map’ once you have gone through COntrol 1 to see the changes in the map view

3

Click on the right side dropdown arrow to download the land cover maps in GIS format as well as to download other data

The download data provide:

  1. Get the download link to download the GIS data
  2. Get the data value and the symbology to use on your own using the GIS data
  3. Get other data in GIS format that can be used for clipping the data obtained from ‘Get Download Link’

Layer Definition

Class Number

Description

0

Evergreen Forest - areas dominated by evergreen trees greater than 20% of total

vegetation cover. More than 75% of the tree species maintain their leaves all year.

Canopy is never without green foliage.

1

Shrub/Scrub - areas dominated by shrubs; less than 5 meters tall with shrub canopy

typically greater than 20% of total vegetation. This class includes true shrubs, young

trees in an early successional stage or trees stunted from environmental conditions.

2

Barren Land (Rock/Sand/Clay) - areas of bedrock, desert pavement, scarps, talus,

slides, volcanic material, glacial debris, sand, strip mines, gravel pits and other

accumulations of earthen material. Generally, vegetation accounts for less than 15% of the total cover.

3

Developed - areas of all development that are primarily impervious surfaces. Examples

include roads, single family homes, commercial areas. Generally less than 15%

vegetation coverage.

4

Grassland/Herbaceous - areas dominated by graminoid or herbaceous vegetation,

generally greater than 80% of total vegetation. As well as areas of grasses, legumes, or

grass-legume mixtures planted for livestock grazing. Pasture vegetation accounts for

greater than 80% of total vegetation.

5

Open Water - areas of open water, generally with less than 25% cover of vegetation or

soil.

6

Deciduous Forest - areas dominated by trees generally greater than 5 meters tall, and

greater than 20% of total vegetation cover. More than 75% of the tree species shed

foliage simultaneously in response to seasonal change.

7

Woody Wetlands - areas where forest or shrubland vegetation accounts for greater than

20% of vegetative cover and the soil or substrate is periodically saturated with or

covered with water.

Map Control

Description

1

Select the season (Fall/Summer) that you want to visualize/download Composite Data

2

Select the number of Bands to visualize. You can visualize between 3 Bands RGB or single band Grayscale

3

If 3 Bands RGB from 2 is selected, select the bands for the R, G, B channel

If 1 Band Grayscale from 2 is selected, select the band for the visualization

4

Click the button to visualize the composite data in the map view based on the settings in the 1, 2 and 3

5

This field is active when the single band grayscale is selected in 2. You can put in the name of the valid color or the hex code or the RRGGBB format separated by a comma (,) for visualization

6

After you click ‘Show in Map’ (4), you can use this button to download the data.

4. Analysis Page

Change Detection

Map Control

Description

1

The year for which the bottom layer is displayed in the map view

2

The year for which the top layer is displayed over the bottom layer described in 1

3

The handle that you can slide to view the changes over the same area with the map layer defined in 1 and 2

4

Change the base layer of the map using this

5

Zoom in/Zoom out the map

6

The legend for the map

Filter Area for the statistics

Filter Area for the statistics described below

Statistics and Analysis

You can view the area occupied by different class in Acre and Hectare and the percentage occupied by that class in the area filtered above for the given year selected

Map Control

Description

1

Change the year for which you want to view the statistics in the table

The pie chart representation of the different classes by the percentage occupied by that class in the area filtered above for the given year selected

Map Control

Description

1

Change the year for which you want to view the statistics in the table

2

Click here to download the data displayed as image or PDF or SVG or CSV or XLS

The column chart representation of the land cover for different years defined by the year as explained below in the area filtered

Map Control

Description

1

The start year for the column chart

2

The end year for the column chart

3

Click this button once you have start year and end year as explained in 1 and 2

4

Click here to download the data displayed as image or PDF or SVG or CSV or XLS

5. Contact Us/Feedback

Click on ‘Contact Us’ to view the feedback/contact us form

Fill in your full name, your email address to which we should contact you about your message.