The hottest sub committee solicits technical regul

2022-09-23
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The sub committee solicited opinions on the technical regulations for ecological background investigation of uninhabited islands, involving a number of instruments and equipment

the Secretariat of the sub Technical Committee for marine investigation, observation and monitoring of the National Technical Committee for marine Standardization (hereinafter referred to as the "Sub Committee") organized the Marine Research Institute of the Ministry of natural resources to carry out the preparation of the industrial standard of the technical regulations for ecological background investigation of uninhabited islands (Plan No.: -t) (Draft for comments), The draft of the standard is now open for comments. See the annex for details. Please feed back your written comments and suggestions to the Secretariat of the sub committee, indicate the words "solicit opinions on the technical regulations for ecological background investigation of uninhabited islands" in the email, and feed back the electronic version at the same time. The deadline for consultation is August 20, 2020. For more details, please visit the second Institute of Oceanography of the Ministry of natural resources

excerpt from this procedure:

scope of application

this standard specifies the main contents, methods and basic technical requirements of ecological background investigation on uninhabited islands

this standard is applicable to the ecological background investigation of uninhabited islands to be developed and utilized and uninhabited islands to implement ecological island reef projects. The ecological background investigation of other islands can be implemented with reference

normative references: gb/t 6962 specification for aerial photography of 1:500, 1:1000, 1:2000 topographic maps, gb/t 14912 technical specification for 1:500, 1:1000, 1:2000 field digital mapping, GB 15618 soil environmental quality standard, gb/t 18314 specification for global positioning system (GPS) measurement, gb/t 20257.2 national basic scale map schema Part 2: 1:5000 1:10000 topographic map schema Gb/t 23236 digital aerial photography therefore has good stretchability when stretching. Aerial triangulation specifications for shadow measurement, hy/t 058 operational specifications for marine investigation, observation and monitoring archives, HJ 710.1 technical guidelines for Biodiversity Observation terrestrial vascular plants, etc

basic requirements for data

in principle, the ecological background investigation should be carried out on site. If the ecological environment of the island to be investigated has basically not changed, the existing investigation and monitoring data can be collected and used, and the source and time of the data should be indicated; If the existing investigation and monitoring data cannot meet the technical requirements, on-site investigation or supplementary investigation shall be carried out. The collected or investigated data should meet the following basic requirements:

A) for uninhabited islands with development and utilization activities, the topographic and geomorphic data, natural and cultural relics of islands and surrounding sea areas should be the data obtained from the investigation within five years; For uninhabited islands without development and utilization activities, historical data that can objectively reflect the current situation of the island and its surrounding waters can be used for topographic, geomorphic, natural and cultural relics and other data

b) the data of island vegetation and plants, soil, animals, fresh water, seawater quality, marine sediment, marine biological ecology, typical ecosystem and so on should be the data obtained by investigation within three years

c) if remote sensing images are used, the remote sensing images should be multispectral images or fused multispectral images with spatial resolution better than 2.5m and cloud cover less than 5% in recent one year

d) the analysis and test data of fresh water, sea water quality, marine biological ecology, typical ecosystem and so on should be provided by units with national and provincial metrological certification or laboratory accreditation qualifications

e) the terrain, shoreline and other data of the island and its surrounding areas shall be provided by units with surveying and mapping qualifications or obtained through on-site measurement

survey methods

Island topographic survey can be carried out by remote sensing topographic survey or field topographic survey

it is encouraged to adopt new technologies to measure the terrain of the island, but the measurement accuracy must meet the accuracy requirements of the corresponding scale topographic survey

remote sensing topographic survey

remote sensing topographic survey adopts aerial photogrammetry, airborne lidar measurement and other measurement technologies that can meet the requirements of island terrain accuracy. Among them, aerial photogrammetry is in accordance with the specifications for aerial photography of 1:500, 1:1000, 1:2000 topographic maps (gb/t 6962), the field specifications for aerial photogrammetry of 1:500, 1:1000, 1:2000 topographic maps (gb/t 7931), the field specifications for aerial photogrammetry of 1:5000, 1:10000 topographic maps (if G is too small, it will cause the drag mechanism to slip b/t 13977), the field specifications for low altitude digital aerial photogrammetry (ch/z 3004) The requirements of low altitude digital aerial photography specification (ch/z 3005) and digital aerial photogrammetry control measurement specification (ch/t 3006); Airborne lidar measurement shall be carried out in accordance with the requirements of technical specification for airborne lidar data acquisition (ch/t 8024)

water quality sampling method

water quality sampling shall be carried out according to the following methods:

a) on site sampling and analysis of surface water shall be measured and analyzed by pH meter, water temperature meter and other portable instruments. For the collection of samples, the river sampling point should avoid dead water and backwater areas, avoid the influence of tides, and can generally reflect the water environment quality of surface water. The sampling points of lakes, reservoirs and other water bodies should be selected at the water intake or outlet. For water bodies without obvious water intake or outlet, please refer to the requirements of the technical regulations for the design of water quality sampling schemes (hj495) to arrange sampling stations; Fill in the surface water sampling record form (see Appendix B-3)

b) pH is used for on-site sampling and analysis of groundwater. Sometimes in order to reduce the amount, non-ferrous metals such as aluminum alloy and special metal meters, water temperature meters, conductivity meters and other portable instruments are also used to preliminarily identify whether it is fresh water and decide whether to collect laboratory samples; Fresh water samples are obtained by fixed depth sampler or simple sampling facilities; Spring water samples are collected directly at the outlet, and the groundwater sampling record form is filled in (see Appendix B-4)

c) the sampling depth of surface water and groundwater samples should be 0.5m below the water surface. When the water depth is less than 0.5m, samples should be taken at 1/2 of the water depth

d) water quality sampling, sample storage and management shall be carried out in accordance with the requirements of the technical regulations on the storage and management of water quality samples and the direct rise of pipe temperature (hj493)

Island normalization monitoring measures

according to the environmental characteristics of the island where the project is located and the surrounding sea area, combined with the type and mode of island use of the project, the island normalization monitoring measures during the construction period and operation period are proposed. The monitoring measures should include monitoring means, monitoring content, monitoring elements, the layout of monitoring stations (generally consistent with the ecological background survey stations), monitoring frequency and monitoring implementation agencies. The monitoring contents should include the key protected objects of the island, island vegetation, animals, water quality, ecology, as well as the dynamic changes of island topography and geomorphology, and should be consistent with the background investigation

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