Exploration and Practice of Verification and Optimization Technology for Surface Sample Sites of the Third National Soil Census Based on Multisource Data Fusion Method
The Third National Soil Survey is a crucial national investigation that pertains to the high-quality development of the economy,society,and ecology.Among these,the verification and optimization of soil sampling points are the most fundamental tasks,serving as prerequi-sites for field investigations,sample collection,and the preparation of survey results.Due to limitations in the timeliness of basic data and the pre-established sampling point allocation method,issues such as changes in land use types,poor accessibility to sampling points due to road conditions,and insufficient sampling point density have been observed in the sampling points issued by the national authorities.This article fo-cuses on the key challenges and difficulties related to the verification and optimization of sampling points,and it extensively utilizes advanced technologies such as remote sensing and geographic information systems(GIS).Furthermore,it introduces a sample point verification and op-timization workflow based on the fusion of multi-source data.It applied this methodology in the soil survey work in Liyang City,which signifi-cantly improved the accuracy and efficiency of sample point verification.This experience has laid the foundation for creating a replicable and scalable approach to soil survey work.
general survey of soildata fusionverification of soil sample sitesoptimization of soil sample sitesdensification of soil sam-ple sites
万方数据
维普
