Vegetation buffer zone: Hualien Changpan proved that the vegetation buffer zone is beneficial to the environment and the role of the vegetation buffer zone.

In recent years, the Council of Agriculture has promoted "green environmental payments to the land", hoping to encourage farmers to plant incentive crops and maintain the production environment through subsidies. Hualien District Agricultural improvement Farm held a "Workshop on Landscape Management measures and Environmental resilience" on the 15th. Xu Zhongyu, an assistant researcher at Hualien Farm, mentioned the "study on using plant buffer zones to reduce nitrogen and phosphorus in running water in paddy fields." it is hoped that this study will prove that the "plant buffer zone" is beneficial to environmental maintenance, and then incorporate the plant buffer zone into the green payment to the land, and encourage farmers to set it up.

The plant buffer zone refers to the plant area located on both sides of the river and the land and water area of the lake or reservoir, which has the functions of slowing down the surface runoff and blocking sediment, but the plants planted in the plant buffer zone should be considered, including the on-site condition, and so on. At present, there is still little related research on what kind of plant to be planted. Therefore, the plant buffer zone is not included in the current "Green Environment payment Plan for the Land" of the Council of Agriculture.

Xu Zhongyu, an assistant researcher at Hualien Farm, said that if the fertilizers used during rice cultivation are not absorbed, some of them will be absorbed by the soil, while others will exist in running water, which will be discharged into streams or the sea will affect the ecology. at present, the plant buffer zone established near the sea of Xinshe tribe in Hualien County is being tested with a variety of aquatic plants.

As for the selection of plant buffer plant species, he Zhongyu explained that the plant should have the characteristics of intensive cultivation, large demand for fertilizer, easy management and so on. After discussion with local farmers, aquamarine (water cabbage) was temporarily selected for experiment. and with water fern, watercress, Taiwan Pingpeng grass, lotus and other aquatic plants, it is expected to prove that the plant buffer zone is helpful to reduce the residual fertilizer in running water. It also provides biological habitats, which can be incorporated into land-to-land green environmental benefits in the future to encourage farmers to set up plant buffer zones.