The Near-natural Estimating Research Of The Yongding River

Large vascular plants in stable freshwater ecosystem, its survival situation, is an important index of evaluating whether water ecosystem health, is the important content of the water ecological investigation. In recent years, due to various, great changes have taken place in the Beijing area surface water ecosystem.This paper selected topic closely combined with the investigation of water ecological environment monitoring and research projects in Beijing, the main, to 19 section of a large aquatic vascular plants species composition, community types and coverage, and soil and water conservation status investigation and study, analyzing the characteristic of the community and its influencing. The detailed investigation and the project was introduced and the present situation of natural hydrological condition, water loss and soil erosion in the basin, and according to the regional characteristics, in many queries.Through the study of this paper, on the one hand, Beijing Yongding river basin were analyzed aquatic vascular bundle plant community characteristics, on the other hand for the evaluation of natural ecological river basin in the study area, discussed the influence of different factors on the aquatic plant community, to provide theoretical and technical support for watershed ecological recovery, for the correct evaluation of surface water ecosystem health provided.