The article discusses how wetlands are important habitats for wildlife but are being damaged by human activities. The researchers created a system of 12 indicators to assess the health of wetlands, using satellite technology and landscape data. They applied this system to Hongze Lake in China and found that the edges of the lake are less healthy than the interior. The overall health index for the wetland was 5.63. This method can help us understand the health of wetlands and support efforts to protect and restore them.