Time Series Mapping and Community

Analysis

By:AlexanderC.SmithPhDStudentinGeographyatOregonStateUniversity

PresentedforGeographyDay

Outline 1.  Needforna,onalforestcoverchangemapsinNepal

2.  DevelopmentofLandsatderivedforestchange,meseriesmaps

3.  Localdissemina,onandanalysis

National forest cover change maps

1.  Forestcoverchangeq  Differentmethodologymake1990,2000and2010forestcover

comparisonsdifficult

q  Nepalneedsaccuratereferencemapsofforestchange

2.  Forestchangemapscan:q  Validateeffec,venessofcommunityforestry

q  Informpolicydecisionmaking

q  ProvidehistoricdataforUN-REDD(Reducinggreenhousegasemissionsfromdeforesta,onandforestdegrada,on)

q  ServeastooltovalidateREDD

Development of Landsat derived forest change time series maps

MajorchallengesinthecontextofNepal.1.  Cloudfreecompositeimages

2.  Topographiccorrec,on

Generating cloud free composites

Topographic correction

Time series maps

Local dissemination and analysis Howcan,meseriesmapsbenefitlocalnaturalresourcemanagers(e.g.communityforests)inNepal?

OrHowcanlocalnaturalresourcemanagersuseexis,ngremotesensingresourcesandproducts?

Whatproductswouldbeuseful?

ToexaminethisIproposeanitera,vepar,cipatoryprocess.

What is a community forest?

Community time series analysis and value assessment

1.  Maps(forspa,alreference)and,meline(fortemporal

reference)

2.  Combineandanalyzethereferencemaps,,melineand,meseriesmaps.

Reference maps Developasetofmapsthatarerelevanttothecommunityandhavewellknowngeographicmarkers

1.  Basicreferencemap

2.  Thema,cmaps

q  Infrastructure(roads,bridge,drinkingwatersystem)

q  Ins,tu,ons(schools,healthclinic,VillageDistrictCommi]ee,CommunityForestOffice)

Time line Createa,melineoflocallyimportantevents

1.  Se]lementhistory

2.  Infrastructuredevelopment(e.g.watersystem,roadandbridgedevelopment)h

3.  Governmentandcommunityins,tu,ons(schools,clinics,communityforests)

4.  Agriculturalandeconomicchanges

Land change maps Timeseriesofforestchange

1.  Forest–non-forest2.  Forestcondi,on3.  Otherlanduses?

Introducing maps and time line to local communities

1.  Discussvariousmaplayers2.  Oncepar,cipantsaresufficientlyorientedtothecurrentlanduse

pa]erns,introducehistoricallandcoverchanges3.  Reference,melinetoeventsthatmaybemorememorablethan

thedate.4.  Explorethepa]ernsthatarevisibleinthedataandcomparethem

tothehistoricallanduseandlandusechangenarra,ves5.  Summarizeanddiscusshistoricalcontext

Conclusion

1.  Methodsneedtobefurtherfleshedout

2.  Abasicpremiseisthatstar,ngwithknownplacesandeventswillhelpruralcommuni,esunderstandremotesensingdata

3.  Onceruralstakeholdersareorientedtoremotesensingdatamoresophis,catedanalysiswillbepossible

4.  Thegoalisethno-sensing:acombina,onofethnographyandremotesensing.

Ques,ons?