"1 million water system data of five Central Asian countries in 2010": including vector data of all lakes and major rivers (tributaries in some basins) in the five Central Asian countries (Kazakhstan, Tajikistan, Uzbekistan, Kyrgyzstan and Turkmenistan), GCS longitude and latitude, WGS84 coordinate system are selected for data projection; data attributes reflect the middle of 2010 The area of lakes and the length of rivers within the scope of the five Asian countries; this data can be superposed with the data of "administrative boundary of one million in five Central Asian countries in 2010" to produce the water system data of each country. It reflects the spatial attribute information of lakes and rivers in the five Central Asian countries.
Based on the map of "Kazakhstan, Tajikistan, Kyrgyzstan, Uzbekistan and Turkmenistan" published by China Map Publishing House in 2010, the data source is the map of five countries.
Arc / Info manual vectorization. In case of attribute data and text data, digital means shall be indicated; in case of spatial data, digital tools and simple processes shall be indicated; in case of data generated by mathematical operation or model, algorithm and model of mathematical operation shall be clarified, and the source of algorithm and model shall be indicated
This data is processed by Xinjiang Institute of ecology and geography, Chinese Academy of Sciences, and vectorized by professionals. The error is controlled within 2 pixels, which ensures that the vectorized boundary is completely consistent with the boundary of topographic map, and the data accuracy is as high as 99%.
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