#控制沖蝕及沉積
#維持生物多樣性
#調節水文流動
#Control erosion and sediment
#Maintain biodiversity
#Regulate hydrological flows
溪流重塑改變生態系統 (Stream remodeling alters ecosystems)
河狸通過砍伐樹木和灌木來改變生態系統，並創建濕地，潮濕草甸和池塘鑲嵌區塊
(Beavers alter ecosystem by cutting trees and shrubs and creating mosaics of wetlands, moist meadows, and ponds)
