add proportion of protected land and setters and getters

src/ac/ed/lurg/landuse/LandCoverItem.java

@@ -12,6 +12,7 @@ public class LandCoverItem implements RasterItem {
 	
 	private Map<LandCoverType, Double> landcover = new HashMap<LandCoverType, Double>();
 	private double totalArea;
+	private double proportionProtectedArea;
 	
 	/** Area in Mha */ 
 	public Double getLandCoverArea(LandCoverType landType) {
@@ -36,6 +37,15 @@ public class LandCoverItem implements RasterItem {
 	public void setLandCoverFract(LandCoverType landType, double d) {
 		landcover.put(landType, d);
 	}
+	
+	public void setProtectedArea(double proportionProtectedArea){
+	this.proportionProtectedArea=proportionProtectedArea;
+	}
+	
+	
+	public double getProtectedArea(){
+		return proportionProtectedArea;
+	}
 			
 	/*public double getTotal() {
 		double total = 0;