More information on the data behind the statements in Chapter 3 is available in The State of Natural Resources Report (SoNaRR): Assessment of the Sustainable Management of Natural Resources.
Mae rhagor o wybodaeth am y data y tu ôl i'r datganiadau ym Mhennod 3 ar gael yn yr Asesu Rheolaeth Gynaliadwy ar Adnoddau Naturiol.