The data set of land use map in the middle and lower reaches of Taohe River in Huangshui includes the land use of Yongjing County in Gansu Province and Minhe County of Qinghai Province in 2013, 2014, 2015, 2016 and 2017. The format of preservation is xlsx. The data is named in the form of "key governance area + administrative region + year + land use statistical table", such as "×× key governance area ×× County ×" Statistical table of land use in ×. The classification system of land use includes 8 first class, 22 second class and 2 third class.
The high resolution satellite No. 1 and the high resolution satellite are the main sources of the data.
The remote sensing images are preprocessed by radiation correction, orthorectification, fusion and mosaic. The actual surface area corresponding to the minimum patch area is not less than 0.1 Hm2, the polygon has no overlap, no gap, and the patch attribute has no vacancy or redundancy. Before remote sensing image interpretation, remote sensing image, typical survey and field comparison were used to establish remote sensing interpretation marks of land use. Based on the remote sensing image, combined with the interpretation marks, the land use types are extracted. Reexamination of interpretation results: take no less than 5% of the total map spots for verification. The number and results of field verification samples meet the requirements of technical specification for remote sensing monitoring of soil and water conservation (sl592-2012). For the verification map spots, 10% of the verification samples are selected for field verification.
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.ncdc.HHSTBC.2020.162
10.12072/ncdc.hhstbc.db2652.2022
