Urban land use distribution data / urban functional zoning distribution data / urban POI points of interest / vegetation type distribution

        Sample data ： Baidu cloud download link ：https://pan.baidu.com/s/17ofPwpDM3OCHnE-LuhvUp  Extraction code ：i0m4

        Urban functional zoning is to divide various material elements in the city according to functional requirements , Like a factory 、 Warehouse 、 Partition layout of residential buildings , Form an interconnected 、 An organic whole with reasonable layout , Create a good environment and conditions for various activities in the city . According to the principle of functional zoning, the form of land use and spatial layout is Urban master plan An important way to solve this problem .

        at present Geographic remote sensing ecological network platform The distribution data of urban functional zoning has been released .

        In modern urban planning , Functional zoning is usually evaluated 、 Based on the selection of urban land （ See urban land evaluation ）. Generally, cities have the following main functional areas ： Residential area 、 industrial area 、 Warehouse area 、 External traffic area, etc ; Some cities also have administrative districts 、 business zone 、 Cultural and educational District 、 Recuperation area, etc . The division of urban functional areas does not mean mechanically 、 Absolutely divide urban land . for example , The residential area is mainly equipped with various housing buildings and Living service facilities , But it can also be arranged without polluting the environment , the volume of freight transport Small industrial enterprises ; The industrial area is mainly equipped with factories and related power 、 Warehouse 、 Transportation and other facilities , But it is also necessary to set up some living service facilities , And some scientific research institutions . As for the municipal administrative and economic institutions 、 Institutions of higher learning 、 Scientific research and design institutions 、 Large sports facilities , Generally, it can be relatively concentrated in independent areas or sections , Some can also be arranged in residential areas .

          Geographic remote sensing ecological network platform The national urban function zoning distribution data released , By using  2018  Year of  10  M satellite image （Sentinel-2A/B ）、OpenStreetMap、 Night lighting （ Luojia one ）、POI （ Gould map ,POI Category and quantity of ） Communicate with Tencent big data （ Tencent location big data ） As an input feature , Mark each plot 5 There are three main function labels and 12 Subcategory labels . Training and validation samples are collected separately through crowdsourcing , involve 27 Selected representative cities 21 A research group .

        Four types of features are used in land use classification . The first comes from 10 rice Sentinel-2A/B Images （ That's blue 、 green 、 Mean and standard deviation of red and near infrared bands 、 Normalized vegetation index and normalized water index ）. The second type is the location request from Tencent mobile （MPL） data （ That is, the active population on weekdays and weekends 8 Hourly average trajectory ） From . The third is 130 Miroja-1 night light image （ That is, the numerical average ）. The fourth is Gaode POI data （ That is, the total number of all points of interest , And the total number and proportion of each interest point in each plot ）. By extracting features of the training block , Using random forests (RF) The classifier generates the distribution data of national urban functional zoning .

Class A	second level	explain
01 residential	0101 residential	Houses and apartment buildings —— Where people live .
02 business	0201 Business office	Buildings where people work , Including office buildings , And finance 、 Internet technology 、 Electronic Commerce 、 Commercial office space such as media .
	0202 Business services	For commercial retail 、 The restaurant 、 Houses and buildings for accommodation and entertainment .
03 Industry	0301 Industry	Used to make 、 Warehouse 、 Land and buildings for mining, etc .
04 traffic	0401 road	Paved road , Including highways 、 Major and minor urban roads .
	0402 Transportation station	Transportation facilities include cars 、 The bus 、 Train stains and ancillary facilities .
	0403 Airport facilities	civil 、 Military and mixed use airports .
05 Public administration and services	0501 Administration	For the government 、 Land for the army and public services .
	0502 education	Land for education and research , Including schools 、 university 、 The Institute and its ancillary facilities .
	0503 Medical care	For hospitals 、 Land for disease prevention and emergency services .
	0504 Sports and culture	For public sports training 、 Land for Cultural Services , Including the fitness center 、 The library 、 The museum 、 Exhibition Center, etc .
	0505 Parks and green spaces	Parks and green spaces for entertainment and environmental protection .

    Hurry to pay attention for three times , The data acquisition method is as follows ：