京津风沙源治理工程区植被恢复效果调查

“京津风沙源治理工程”区植被恢复效果是研究该区生态环境建设的重点。利用传统生态学方法对整个“京津风沙源治理工程”区的植物多样性进行调查研究，并利用像元二分法对工程第1阶段实施前后的植被盖度进行对比。结果显示：整个京津风沙源区植被平均覆盖度上升，植被盖度低的土地面积逐渐减少，盖度高的土地面积逐渐增加，区内土地具有良好的植被恢复潜力与趋势。证明经过5年的努力，京津风沙源治理工程植被恢复已取得一定治理效果。调查结果可为“京津风沙源治理工程”第2阶段提供基础数据及有益参考。

Investigation of vegetation restoration in the area of Beijing and Tianjin sandstorm source control project

Regional vegetation restoration effect of the area of Beijing and Tianjin sandstorm source control project is the crucial part for environment research of this area.Based on the traditional ecology field survey method,the plant diversity variation under the Beijing and Tianjin sandstorm source control project was studied.The original plant coverage date has been compared with that one which has been measured after the implementing of the first phase of the project by Normalized Difference Vegetation Index(NDVI) method for dimidiate pixel model.The results showed that the low covered area have reduced gradually,and the high covered area have increased correspondingly in the sandstorm source controlled area;and there are good vegetation restoration potential and tendency in this region.The average vegetation coverage has been risen in this area based on five-year efforts of the Beijing and Tianjin sandstorm source control project.The research results provide basic data and reference for second phase of the project.