33 results about "River health" patented technology

The invention discloses an in-situ real-time intelligent biological detection device for protecting the river health. The device comprises an electronic cabin, a sampler mounted below the electronic cabin, and a sampling net mounted below the sampler, wherein a river water power and water quality information real-time acquisition device is mounted above the electronic cabin; a storage battery, a motor, a high-pressure pump, a microprocessor and a data memory card are mounted in the electronic cabin; a high-pressure water gun connected with the high-pressure pump is mounted on the inner wall of the sampler; an image identification system controlled by a microprocessor is mounted at the top of the sampler; the bottom of the sampler is in an open structure and is connected with the sampling net through a traction rope; the sampling net comprises a side net capable of stretching and contracting up and down and a turnable bottom net nested at the bottom of the side net. The invention further discloses an in-situ real-time intelligent biological detection method for protecting the river health, and the variety, the number and the size information of indicator organisms on an in-situ riverbed of a river can be continuously, automatically and intelligently detected on the premise of not destroying a river bottom substrate ecological environment.

The invention relates to a river health assessment method suitable for a sediment-laden river, the method gathers data from, Target setting, survey of current situation, system Analysis, comprehensiveevaluation and so on, a systematic and comprehensive health assessment index system for sediment-laden rivers is established, with reference to relevant regulations of the Ministry of Water Resources, to study and establish river health assessment methods, Index scoring method and evaluation standards, the river and lake health evaluation index system is designed, through the hydrology and waterresources, physical structure, water quality, biological and social service function of five criteria layer of 12 compulsory indicators and 4 optional indicators for scoring calculation, to assess thehealth status of the river; The invention aims at the present situation that the research on the theory and method of river and lake health assessment in China is relatively backward and there is nomore complete assessment framework, constructs a river health assessment index system suitable for the characteristics of the rivers in the southern cities and a more systematic and comprehensive river health assessment index system, and carries out the health assessment work of the rivers in the southern cities.

The invention discloses a river health evaluation method based on natural and social influence. The river health evaluation method comprises the following steps that (a) an evaluation index system is established, and an evaluation factor set is determined; (b) according to the established river health evaluation index standard and determined river and lake level-5 health degree, and each level corresponds to one fuzzy subset evaluation set; (c) a single-factor subordinating degree function is determined; (d) a fuzzy relation matrix is established; (e) fuzzy weight vectors of rating factors are determined; (f) fuzzy comprehensive assessment is performed; (g) vector analysis is conducted on fuzzy comprehensive evaluation results. By the adoption of the river health evaluation method, the comprehensive evaluation results can be obtained, health degrees of single indexes can be also provided, accordingly convenience is brought to diagnosis performed by a drainage basin manager on a drainage basin water environment, and an accurate and effective management measure is implemented.

The invention relates to an ecological environment water demand threshold quantification method based on river overall health. The method comprises the following steps of constructing a river health condition variable fuzzy set evaluation model; establishing a causal relation graph that an ecological subsystem, a hydrological subsystem, a water environment subsystem and a social economic subsysteminfluence the river health condition, constructing a system dynamics-variable fuzzy set coupling model, verifying whether the coupling model can effectively represent the actual conditions; and establishing a nonlinear function relationship between the flow and the river health comprehensive index, determining an upper limit value and a lower limit value of an ecological environment water demandthreshold based on the river overall health by adopting an unknown inflection point threshold value determination method, and ensuring that the river health level is in a normal state. The method is simple, is easy to operate and is accurate in quantification, can effectively solve the river ecological environment water demand threshold, guarantees the normal water supply of a river, maintains thehealth of a river ecological system, and has the good economic and social benefits.

The invention provides a river health comprehensive characterization and evaluation system covering three scales of river basin, river corridor and habitat and combining points, lines and surfaces against the problem that the existing river health characterization and evaluation are largely focused on the single river corridor scale with the ignorance of the internal relations between a river and the river basin and the habitat, and the river health comprehensive characterization and evaluation system applies the multi-index integrated method, respectively determines the river comprehensive health and the health level in each scale and identifies main factors limiting the river health state. The method fully considers the multi-scale integration of the river and the characteristics of close links among the scales and fully considers an interference source of the river and the river, thereby being capable of rapidly and accurately identifying the main limiting factors of the river health while determining the health scales of different river sections of the same river or the health scales of different rivers in the same ecological region, having the advantages of intuitive result expression, convenient application and the like and providing a definite method basis for the river comprehensive management.

The invention relates to a river health assessment method suitable for a sediment-laden river, This method includes: starting from the aspects of data collecting, target setting, current situation investigation, systematic analysis and comprehensive evaluation, constructing a systematic and comprehensive health evaluation index system of sediment-laden rivers and lakes; referring to relevant regulations of the ministry of water resources, studying and establishing the river health evaluation method, index scoring method and evaluation standard, and designing the health evaluation index systemof sediment-laden rivers and lakes; evaluating the health status of sediment-laden rivers by calculating 12 compulsory indexes and 4 self-selected indexes in 5 criterion layers of hydrology, water resources, physical structure, water quality, biological and social service function. The invention constructs a river health evaluation index system suitable for the characteristics of sediment-laden rivers and carries out the research on the health evaluation of sediment-laden rivers according to the present situation that the research on the theory and method of river and lake health evaluation inChina is relatively backward and there is no more complete evaluation framework.

The invention discloses an environmental flow process regulation and control method based on runoff regime, water quality and biological multiple elements, which comprises the following steps: step 1,determining river ecological partitions, and identifying key runoff regime and water quality elements influencing a biocenosis; step 2, constructing a quantitative relationship among runoff situation, water quality factors and biodiversity indexes; 3, considering that the research river is a natural river or a regulation and control river, and if the regulation and control influence is severe, calculating the change rate of the biodiversity index under the regulation and control influence; if the research river is slightly influenced by gate dam regulation or is a natural river, directly carrying out the step 4; and step 4, perfecting and expanding evaluation indexes (including runoff situation, water quality factors and biodiversity indexes) and criteria of river health. And based on theactual measurement daily runoff process, environment flow process intervals under different water quality health levels are obtained. Technical support is provided for determination of a river environment flow process, influence of water conservancy project regulation and control on biocenosis and even river ecosystem protection.

The invention discloses a river health management method and system. The river health management method comprises the following steps: step 1, collecting and checking the position of each sewage draining exit in a river and management enterprises corresponding to the sewage draining exits; 2, arranging a plurality of detectors in the river, wherein the detectors are used for detecting the pollution degree in the river and collecting the positions of the detectors; 3, drawing a virtual electronic map; marking the position of the sewage draining exit and the position of the detector in a virtual electronic map; and 4, according to the traceability model and the detector, analyzing a sewage draining exit corresponding to the river pollution source, marking the sewage draining exit, notifying a manager to treat the river pollution source, and monitoring the river through data transmitted by the detector, so that the situation that the manager of the river needs to slowly find out the pollution source when river pollution occurs is avoided. The troubleshooting time of river management personnel is reduced, and the difficulty of pollution tracing is reduced, so that the river management becomes simple, quick and convenient.

The invention relates to a river management method and river management equipment, in particular to a method for realizing river-health diagnosis and equipment for realizing the method, belonging to the field of river management in the services of water conservancy departments. The method of the invention comprises the following steps: validating user permissions and priorities; selecting river channels and setting related parameters; calculating the health indexes of river reaches and the whole rivers; carrying out etiological diagnosis so as to obtain rehabilitation measures and suggestions; finally, sending the diagnosis result. The equipment for realizing the method comprises terminal equipment, gateway access equipment and river-system information service equipment. The method and the equipment of the invention have the advantages of solving the timeliness problem of river-health data collection and diagnoses, making the users achieve the purpose of saving time, labor and money, and improving the service images of the water conservancy departments.

The invention relates to an ecological flow determination method combining probability density and guarantee rate, and the method comprises the steps of collecting daily flow data of many years, and carrying out the arrangement to obtain a daily runoff frequency curve of 12 months; using an adaptive kernel density function method, taking the flow at the position with the maximum probability density as the optimal flow of the month, and obtaining the annual optimal ecological flow process; determining a month-by-month suitable ecological flow lower threshold value and a year-round suitable ecological flow lower threshold value flow process; and determining a month-by-month suitable ecological flow upper threshold and a year-round suitable ecological flow upper threshold flow process. The invention provides the ecological flow determination method combining the probability density and the guarantee rate for the first time; the calculation result can guarantee that the designed ecologicalflow can reflect the annual and seasonal change process, meanwhile, the method adapts to the aquatic organism requirement and the human society water requirement, the balance between river health andsocial water is maintained to the maximum extent, and the method has certain use and popularization value.

The invention discloses a river health change quantitative attribution method, device and system, and the method comprises the steps: judging a mutation point of an annual average flow process of a drainage basin, wherein periods before and after the mutation point are respectively called a reference period and a change period; calibrating a hydrological model by utilizing the hydrological and meteorological data of the reference period; inputting the hydrometeorological data of the reference period and the change period into a hydrological model to obtain a natural flow sequence; obtaining ariver health grade calculation model, wherein the river health grade calculation model comprises different flow intervals and a river health grade calculation formula; inputting the actually-measuredflow sequence and the natural flow sequence into a river health grade calculation model, calculating an actually-measured river health grade sequence and a natural river health grade sequence, comparing the difference between the actually-measured river health grade sequence and the natural river health grade sequence, and quantitatively separating contribution rates of climate changes and human activities on river health. The method can accurately calculate the contribution rate of climate change and human activities to river basin and river ecological health influence.

The invention discloses a river health assessment system, comprising a monitoring device, a terminal device and a server; the monitoring device comprises a fish and a chip; the chip comprises a detection unit and a communication unit; the detection unit is used for detecting positioning data and water quality data; the detection unit is used for generating corresponding color data according to thewater quality data; the server comprises an image display module, a communication module and a control scheme module; the image display module is used for generating image data of a polluted area marked on a map according to the positioning data and the color data; the control scheme module is used for generating a control scheme according to pollution level data and controlling the starting andstopping of a control terminal; and the terminal device comprises a water hardness regulating device, a ph value regulating device, an oxygen feeding device and a display. The chip is injected into the body of the fish, the water quality data of a river is monitored by virtue of the characteristics of random walking wide coverage range of the fish, and a polluted position is determined and precisely treated, so that the pollution treatment efficiency is increased.

The invention relates to a river health evaluation method and device based on a drainage basin. The method comprises the steps of obtaining index data of multiple evaluation indexes of river health of the drainage basin in a preset time period; determining the possibility function distribution of the value of each evaluation index according to the index data of each evaluation index; according to the possibility function distribution of each evaluation index value, calculating an information entropy value corresponding to the evaluation index; correcting the information entropy value by using a preset correction algorithm to obtain a corrected information entropy value; calculating according to the corrected information entropy value of each evaluation index and the number of the evaluation indexes to obtain an information entropy weight corresponding to the evaluation index; calculating a river health index of the drainage basin according to the corrected information entropy value of each evaluation index and the corresponding information entropy weight; analyzing the river health index, and evaluating the river health development trend. According to the technical scheme, the river health index is obtained through entropy weight analysis and calculation, and a scientific basis is provided for drainage basin system governance decision making.

The invention discloses a new river health evaluation method. The method comprises the following steps: step 1, screening ecological indexes for evaluating river health according to the characteristics of a river and the change of a cascade barrage to the river; 2, carrying out continuous and long-term monitoring on the screened river indexes; 3, calculating an index based on the collected data, and defining the change condition of the deviation index of the index after the index is compared with the natural river; 4, dividing index grades according to the characteristics of the deviation degree indexes; and 5, comprehensively evaluating the influence condition of the river health of the cascade barrage. Through positive and negative deviation index analysis, the influence degree of damming on the river can be reflected, the health condition of each damming area river reach can be evaluated, more accurate research is provided for the health condition of the whole river, and therefore suggestions are provided for river management.

The invention provides a method for constructing a sustainable ecological landscape water body. The method can quickly construct a ''fewer human-managed'' landscape area at low cost, wherein the landscape area has a complete community structure and rich species diversity, and follows the natural circulation rule in a later period. The method can make people get close to green and natural, give full play to promotion effect of the ecological health-care function of the plant community on the physical and mental health of people, and at the same time, reduces construction costs and maintenance costs. According to a "near nature" theory, the natural river cycle is shortened while river health is achieved and maintenance is reduced. A basis is provided for construction of near-natural rivers in cities and towns in Zhejiang province, and rehabilitated river ecosystems are more sustainable and can give play to the maximum service functions.

The invention provides a river health evaluation method and evaluation device. The method comprises the following steps: collecting the hydrological parameters of a to-be-evaluated river in set time periods, wherein the hydrological parameters comprise the flow rates and water temperature of the river, the amounts of precipitation and air temperature; subjecting the flow rate and the precipitationamount in a first time period to fitting so as to obtain a first fitting coefficient; subjecting the flow rate and the precipitation amount in a second time period to fitting so as to obtain a secondfitting coefficient; subjecting the water temperature and the air temperature in the first time period to fitting so as to obtain a third fitting coefficient; subjecting the water temperature and theair temperature in the second time period to fitting so as to obtain a fourth fitting coefficient; determining the flow rate variation coefficient of the to-be-evaluated river in the set time periodsaccording to the first fitting coefficient and the second fitting coefficient; determining the water temperature variation coefficient of the to-be-evaluated river in the set time periods according to the third fitting coefficient and the fourth fitting coefficient; and evaluating the health level of the to-be-evaluated river according to the flow rate variation coefficient and the water temperature variation coefficient. The river health evaluation method and evaluation device of the invention can evaluate the health level of a dam-free river.

The invention relates to a method for evaluating the environmental flow of a water-reducing river reach of a river source area based on a carbon metabolism rate. The method includes: firstly, analyzing and determining the carbon metabolism capability of river sediment microbial communities; and establishing a quantitative relationship between the microbial carbon metabolism rate k and the flow according to a response relationship between the flow gradient reduction and the microbial carbon metabolism rate, constructing a threshold relationship between the microbial carbon metabolism rate k andthe flow, and setting a corresponding relationship between the river health condition and the flow reduction range according to the threshold relationship; and finally forming the evaluation method for the environmental flow of the river health degree of the source region by combining a health evaluation standard based on the microbial carbon metabolism rate. The method has the advantages that the method is novel, unique and rapid in evaluation, is an environmental flow calculation method based on functional requirements, can effectively solve the problem of evaluation of the environmental flow of the source area river with a special habitat, and promotes healthy development of a river ecosystem under hydroelectric development.

The invention discloses a river ecosystem health monitoring and evaluation method and system, and the method comprises the following steps: collecting river ecological indexes according to preset time, and constructing an ecological index matrix; constructing a river health evaluation module based on a river biological environment adaptability curve; constructing a pressure-state-response model; and calculating a river ecosystem health value through a river health evaluation module and a pressure-state-response model based on the ecological index matrix. According to the technical scheme, the problems that the current collection workload is large, and collection is difficult in some regions can be solved. Through the intelligent acquisition system and method, the acquisition workload can be greatly reduced, and the acquisition, monitoring and evaluation efficiency can be improved.

The invention relates to a method for evaluating the environmental flow of a river water reduction reach based on a benthic microorganism P/R value. The method includes: firstly, analyzing and determining a P/R value of a river benthic microbial community; and establishing a quantitative relation between the benthic microorganism P/R value and the flow according to a response relation between theflow gradient reduction and the benthic microorganism P/R value, searching a threshold relation between the benthic microorganism P/R value and the flow change, and setting a corresponding relation between the river health condition and the flow reduction range according to the threshold relation; finally forming an environmental flow evaluation method capable of characterizing the ecological health degree of the river by combining a health evaluation standard based on a microbial P/R value. The method has the advantages of novelty, uniqueness, quickness in evaluation and field measurement, isan environmental flow calculation method based on functional requirements, has universal adaptability to various special river habitats, and can promote healthy development of a river ecosystem underhydroelectric development.

The invention discloses a river health assessment method for a sediment-laden river, and the method comprises the following specific steps: S1, determining a river evaluation unit, dividing the river evaluation unit into a plurality of evaluation river reaches according to the length of the evaluation unit, determining a river evaluation index system, and setting a score assignment standard; s2, index monitoring points are established according to the evaluation river reach, and data acquisition of river evaluation indexes is carried out; and S3, independently calculating each river evaluation index data according to the data acquired in the S2, and assigning scores to each index according to the score assigning standard in the S1. According to the river health assessment method, river health assessment is carried out by independently adopting the water quality superior and inferior index, the water body self-purification index and the sediment pollution index, the number of adopted indexes is small, but most necessary indexes needed by river health assessment are included, the adopted indexes are low in obtaining difficulty, the requirement for analysts is low, and the river health assessment method is more suitable for large-scale popularization.