Hsieh points out that under ideal conditions, wetlands should be supported by a transition zone--the area infiltrated by lake water--that rises by at least one meter above the lake over a distance of at least ten meters. That way, organic matter can be transported to the most fertile parts of the wetland by changes in the water level, providing for the growth of different aquatic plants.
謝蕙蓮指出，理想的濕地，池水浸潤的「推移帶」應該要有至少一公尺水位落差、10 公尺的推移距離才夠，如此才能藉著高低水位變化，將岸邊的有機物質傳送到生產力最高的濕地，提供不同水域植物的生長。