The forest area in the Delta almost kept unvaried, and the forest biomass as increasing ear after year, with an annual increment of about 1.2%.

• 珠江三角洲快速城市化和经济发展对区域森林生物量的积累并没有产生明显影响，区域森林面积基本保持不变，而区域森林生物量呈逐年增长趋势，年增长率为1.；2%25。