The relationship between coastal wetland and natural disasters in Yellow River Delta should be recognized systematically, and loss and degradation of the coastal wetland should be abated practically.
应从系统的角度认识黄河三角洲滨海湿地与区域自然灾害的关系，科学对待并切实缓解滨海湿地的损失和退化。
2
The characteristics of nitrogen and phosphorus loss from rice field by natural rainfall runoff were studied in Shuangqiao Farm of Jiaxing city, located at the Yangtz river delta region.