diff --git a/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricher.java b/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricher.java
index 9ddcda468a754aceaca4af742fb25b553e1e5a39..c22e04c803f5289eddae0aeb28f8e7784c9fbd68 100644
--- a/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricher.java
+++ b/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricher.java
@@ -91,7 +91,7 @@ public class AlkisGreenEnricher {
 		
 		String inputString = inFile.getFileName().toString();
 		String inputPathWithoutFileEnding = inputString.substring(0, inputString.lastIndexOf('.'));
-		Path outputPath = Paths.get("data", inputPathWithoutFileEnding + "_with_alkis_greens.gml");
+		Path outputPath = Paths.get("data", inputPathWithoutFileEnding + "_with_alkis_greens_realistic.gml");
 		System.out.println("Writing output file.");
 		GreenEnricher.writeCityGML(cityModel, outputPath);
 		System.out.println("Done");
diff --git a/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeKatasterData.java b/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeKatasterData.java
index 355da9aec5cdfb54475d904d54e3ae981015ac01..7d4706c8d27900ddd188a7b131a39093f7bfc58e 100644
--- a/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeKatasterData.java
+++ b/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeKatasterData.java
@@ -65,8 +65,11 @@ public class TreeKatasterData {
 				if (trunkCirc == null) {
 					continue;
 				}
-				tree.setTrunkRadius(Integer.parseInt(trunkCirc.toString()) / (2 * Math.PI) / 100);
-
+				int circInCm = Integer.parseInt(trunkCirc.toString());
+				if (circInCm == 0) {
+					circInCm = 89;
+				}
+				tree.setTrunkRadius(circInCm / (2 * Math.PI) / 100);
 				result.getTrees().add(tree);
 			}
 		}
diff --git a/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeUtils.java b/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeUtils.java
index 970d52e784ad0029f7b77bd67a80ed5b2de745fe..105ca738b360c4a21e3bec423cf1f2f46d6178bb 100644
--- a/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeUtils.java
+++ b/enrich-citygml-with-greenarea/src/main/java/de/hft/stuttgart/citygml/green/osm/TreeUtils.java
@@ -16,11 +16,15 @@ import org.xmlobjects.gml.model.geometry.aggregates.MultiSurfaceProperty;
 public class TreeUtils {
 	
 	public static void insertTrees(CityModel cityModel, OsmData osmData) throws IOException {
-		TreeKatasterData katasterData = TreeKatasterData.parseTreeKatasterData(Paths.get("data", "Baum.shp"));
+		TreeKatasterData katasterData = TreeKatasterData.parseTreeKatasterData(Paths.get("data", "Trees_realisticScenario_20240201.shp"));
 		generateTreesFromKataster(cityModel, katasterData);
 
+//		TreeKatasterData katasterData2 = TreeKatasterData.parseTreeKatasterData(Paths.get("data", "Trees_realistic_20240201.shp"));
+//		generateTreesFromKataster(cityModel, katasterData2);
+
 		// All kataster trees are taken, osm trees are removed
 		filterDuplicateTreesFromOSM(osmData, katasterData);
+//		filterDuplicateTreesFromOSM(osmData, katasterData2);
 		
 		generateTreesFromOSM(cityModel, osmData);
 
@@ -52,7 +56,7 @@ public class TreeUtils {
 			MultiSurface generatedTree = TreeGenerator.generateTree(coordinate, trunkRadius, trunkHeight, crownRadius,
 					crownRadius, crownHeight);
 			SolitaryVegetationObject cover = new SolitaryVegetationObject();
-			cover.setSpecies(new Code("Acer campestre"));
+			cover.setSpecies(new Code("Acer platanoides"));
 			cover.setId(UUID.randomUUID().toString());
 			cover.setLod2MultiSurface(new MultiSurfaceProperty(generatedTree));
 			cityModel.getCityObjectMembers().add(new AbstractCityObjectProperty(cover));
diff --git a/enrich-citygml-with-greenarea/src/test/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricherTest.java b/enrich-citygml-with-greenarea/src/test/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricherTest.java
index 4ed60d453a5ff7222eaad33debc7b1a84a64c7ea..b128b5d3bc07739f9c597a88754628178052c1bf 100644
--- a/enrich-citygml-with-greenarea/src/test/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricherTest.java
+++ b/enrich-citygml-with-greenarea/src/test/java/de/hft/stuttgart/citygml/green/alkis/AlkisGreenEnricherTest.java
@@ -13,7 +13,7 @@ class AlkisGreenEnricherTest {
 
 	@Test
 	void testAlkisGreen() throws IOException, CityGMLContextException, CityGMLReadException, JAXBException, CityGMLWriteException {
-		String[] args = new String[] {"data/Grombühl_v3.gml"};
+		String[] args = new String[] {"data/Grombühl_v4_case_study.gml"};
 		
 		AlkisGreenEnricher.main(args);
 	}