Typical River Characterization Index Analysis And Health Assessment In Beijing

River ecosystem function degradation has been recognized as a global environmental problem. Researches on the river ecosystem health assessment are based on local geography focus, coupled with the ecological status of rivers in different parts of disparity, which differs in the specific methods of investigation and evaluation outcomes. Representing typical rivers of ecology, complex, tourism, artificial, wetland are Tang River, Bai River, Juma River, Chaobai River, Andamu River for the study, survey of water quality factors, quantity factors, basic data riparian factors, physical structure factors, biological factors, via factor analysis of the corresponding index to find characteristics of each river, river index survey data combined with features from ecology, fluvial geomorphology, river hydrology. The evaluation of river health can display problems of the corresponding river ecosystem, providing suggestions for river restoration.Reference index characterization factor analysis to construct the index system of Beijing suburb typical river evaluation based on qualitative and quantitative analysis. Rivers evaluation index system for the public:geomorphological features:depth, width, slope gradient, the number of man-made water conservancy measures, flat shape, the riverbed material permeability, strait land use, slope structure; hydrological characteristics.:flow rate, pH, total ammonia nitrogen, phosphate, dissolved oxygen, clarity extent, flow diversity, odor; ecological features:wide buffer strip of vegetation, the structural integrity of the buffer zone, slope vegetation integrity. In addition, complex river with biological indicators, wetland river with riparian indicators, ecological river with human disturbance process indicators, tourism river with expert evaluation, artificial river with historical indicators to expand specific research.Beijing suburb typical river evaluation report is as follows:Bai river in the degradation state proportion is larger, with a total investigated length of62km; Andamu River in a degradation state proportion is larger, with a total investigated length of10km; Tang River in its natural and nearly natural state proportion are larger, with a total investigated length of45km; Juma River in its degraded state proportion is larger, with a total investigated length of36.5km; Chaobai River in its degradation state proportion is larger, with a total investigated length of80km. Results can provide a scientific basis for the implementation of research, development and management of rivers and river environmental safeguards activities in the river system formwork.Combined river health assessment results and trends in the status of river management, river health offer Beijing adaptive management strategies, proposed regulatory framework in policy, management, operation, river monitoring; Taking Beijing as the basis for the five typical river management objectives, within the overall framework of the Beijing Municipal Development Goals diverse river to river water ecological restoration and riparian restoration object for the proposed management strategy, proposed management mechanism for ecological monitoring of adaptive management plan to focus on river health to Beijing adaptive management strategies.