1.
2/22/2012 Land Use/Land Cover Change Detection GIS in Health and Planning 2012 Spring Rutgers University by Wansoo Im, Ph.D.

2.
DOWNLOAD MUNICIPAL BOUNDARY HTTP://NJGIN.STATE.NJ.US

3.
DOWNLAOD -> DON’T FORGET TO EXTRACT FILES!

4.
WATERSHED DATA DOWNLOAD WWW.STATE.NJ.US/DEP/GIS

5.
SELECT YEAR OF DATA->CLICK “CONTINUE”

6.
CHECK THE LOCATION MAP OF WATERSHED BEFORE DOWNLOADING THE FILE <ul><li>- What is watershed? </li></ul>

7.
DOWNLOAD THE SHAPEFILE

8.
DON’T FORGET TO EXTRACT FILES AGAIN.

9.
ADD MUNICIPAL BOUNDARY AND WATERSHED SHAPEFILES

10.
OPEN THE ATTRIBUTE TABLE OF LAND USE (WATERSHED) LAYER <ul><li>-Change the color of municipality layer to “No color(Transparent)” </li></ul><ul><li>- Change the color of Municipality boundary to distinguish that of a watershed layer, for example, to “red color” </li></ul>

11.
CHECK IF THE FIELD CONSISTS OF NOMINAL VARIABLES OR NOT(ORDINAL/NUMERIC?...) <ul><li>(ex) Field Type02 -> Urban/Forest… -> Nominal variable)-> Maps by Categories </li></ul>

12.
CLICK THE FIELD YOU WANT TO MAP

13.
CLICK “ADD ALL VALUES”

14.
COLOR ARRANGEMENT FOR LAND USE <ul><li>http://www.metrogis.org/data/info_needs/existing_land_use/codescheme.pdf </li></ul>

15.
LAND USE COLOR PALLETE (LBCS STANDARD) HTTP://WWW.PLANNING.ORG/LBCS/STANDARDS/

16.
<EXTRACT THE SELECTED FEATURE>

17.
OPEN ATTRIBUTE TABLE FROM A MUNICIPAL LAYER -> SELECT THE FEATURE

18.
“ NEW BRUNSWICK” IS SELECTED (HIGHLIGHTED BY BLUE COLOR OF BOUNDARY)

19.
EXPORT THE SELECTED FEATURE

20.
SAVE THE SELECTED FEATURE(EX)NEW BRUNSWICK) AS A SHAPEFILE.

21.
NEWLY-CREATED “NEWBRUNS WICK LAYER(NB)”

22.
CLIP <ul><li>Geo processing->clip->set the right directory(a location where you want to save a file) </li></ul><ul><li>Cookie dough (input feature) : Watershed layer (Land Use layer) </li></ul><ul><li>Cookie cutter(Clip feature) : New Brunswick layer (the one you exported from municipal boundary layer) </li></ul><ul><li>(The data in attribute table which is contained in Watershed layer(Land Use layer) will be conveyed to the newly clipped layer after you clip watershed layer with New Brunswick layer) </li></ul>

23.
CLIP

24.
SELECT THE DIRECTORY (LOCATION WHERE YOU SAVE THE FILE)

25.
INPUT FEATURE(WATERSHED LAYER)/OUTPUT FEATURE(NEW BRUNSWICK LAYER) AND CLICK “OK”

26.
NEXT STEP : NEW BRUNSWICK LAND USE CHANGE <ul><li>Export Land Use Layer(watershed layer) with the boundary of New brunswick boundary layer from municipal boundary layer by “Clip tool” </li></ul><ul><li>2. Within clipped-New Brunswick Land use layer(watershed layer), select the land use change area (Field Name : CHANGE07) by using “Select by attribute “ </li></ul><ul><li>Fomulas : “CHANGE07”=1 </li></ul><ul><li>Right click on the layer of NB land use and export the feature as a shapefile while selection on the land use change is activated, then you will get the map of land use change in 2007 WITHIN New Brunswick. </li></ul><ul><li>3. In this exported map(Land Use Change07 within NB), we want to check how many residential areas are included. </li></ul><ul><li>Open Attribute table, and Sorting data by clicking the field of Land use by dragging individual cases in “the attribute table” – Use Sorting function in the attribute table – </li></ul><ul><li>4. Calculate the Acres of selected features : Open the attribute table –select the variables/cases/features that you want to calcuate – Right click on the ‘ACRES” field – Click “Statistics ” </li></ul>

27.
SELECT BY ATTRIBUTE

29.
FIELD “CHANGE07” = 1 <ul><li>Land use change occurred in 2007 : CHANGE07 = 1 </li></ul><ul><li>No land use change in 2007 : CHANGE07=0 </li></ul>

30.
EXPORT THIS SELECTED LAND USE CHANGE AREAS

31.
SELECT RESIDENTIAL AREA WITHIN LAND USE CHANGE FEATURES. <ul><li>Click the layer for land use change that you just exported-> Open attribute table -> sort -> drag (select the all residential area) -> export a data again. </li></ul>

32.
SELECT RESIDENTIAL AREA IN THE ATTRIBUTE TABLE.

33.
OUTCOME

34.
CALCULATE ACRES : <ul><li>1. Select the cases that you want to calculate </li></ul><ul><li>2. Right click Acres – go to “statistics” </li></ul><ul><li>3. Information available </li></ul><ul><li>Counts (Number of cases you chose) </li></ul><ul><li>Sum / Minimum/Maximum/Standard deviation/… </li></ul>

35.
STATISTICS

36.
EXAMPLE OF LAND USE CHANGE ANALYSIS <ul><li>Land use change around Raritan river waterbody – related to contamination. </li></ul><ul><li>1. Clip certain area of interests </li></ul><ul><li>2. buffer the river </li></ul><ul><li>< Applications > </li></ul><ul><li>- Mapping Land use change within municipalities </li></ul><ul><li>- The impact of Municipal policies on Land use, </li></ul><ul><li>- The analysis of land preservation – its comparison with other municipalities and so on </li></ul>