?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4488%2F&rft.title=Pollution+Control+Policies+and+Natural+Resource+Dynamics%3A+A+Theoretical+Analysis&rft.creator=Rinaldi%2C+S.&rft.creator=Sanderson%2C+W.C.&rft.creator=Gragnani%2C+A.&rft.description=Policies+for+the+management+of+natural+resources+and+the+resources+themselves+interact+to+form+complex+systems.+In+this+paper%2C+we+present+a+highly+simplified+model+that+can+be+used+to+study+the+general+features+of+those+systems.+The+model+has+three+state+variables%2C+the+abundance+of+the+resource%2C+environmental+pollution%2C+and+the+capital+devoted+to+pollution+control.+We+analyze+it+graphically+using+the+singular+perturbation+approach.+Two+modes+of+behavior+are+possible%2C+stationary+and+cyclic.+When+the+abundance+of+the+resources+varies+cyclically%2C+the+length+of+the+period+of+resource+scarcity+depends+on+population+size%2C+economic+activity%2C+pollution+per+unit+of+output+and+on+policy+constraints.+We+distinguish+between+two+classes+of+policies%2C+one+in+which+decision-makers+base+their+investments+in+pollution+control+capital+on+the+abundance+of+the+resource%2C+and+another+in+which+those+decisions+depend+on+the+amount+of+pollution.+We+show+that+policies+based+on+the+observation+of+pollution+are+safer+than+those+based+on+resource+abundance%2C+because+in+the+latter+case%2C+small+changes+in+policy+variables+can+much+more+easily+lead+to+a+collapse+of+the+resource.+Increases+in+population+size%2C+even+when+accompanied+by+an+equiproportional+increase+in+the+pollution+control+budget+can+lead+to+a+change+from+stationary+to+cyclic+behavior%2C+especially+where+policies+are+based+on+resource+abundance.&rft.publisher=WP-95-108&rft.date=1995-10&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=https%3A%2F%2Fpure.iiasa.ac.at%2Fid%2Feprint%2F4488%2F1%2FWP-95-108.pdf&rft.identifier=++Rinaldi%2C+S.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F253.html%3E%2C+Sanderson%2C+W.C.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F265.html%3E%2C+%26+Gragnani%2C+A.+%3Chttps%3A%2F%2Fpure.iiasa.ac.at%2Fview%2Fiiasa%2F1294.html%3E++(1995).++Pollution+Control+Policies+and+Natural+Resource+Dynamics%3A+A+Theoretical+Analysis.+++IIASA+Working+Paper.+IIASA%2C+Laxenburg%2C+Austria%3A+WP-95-108+++++