Mapping wind erosion hazard in Australia using MODIS-derived ground cover, soil moisture and climate data

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Yang, X.^1 ; Leys, J.^2

Office of Environment and Heritage, Department of Premier and Cabinet, PO Box 3720, Parramatta, NSW 2150, Australia^1

Office of Environment and Heritage, Department of Premier and Cabinet, PO Box 462, Gunnedah, NSW 2380, Australia^2

关键词: Continuous monitoring;    Dust source areas;    Ground covers;    Ground resolution;    Regional scale;    Seasonal changes;    Soil conditions;    Spatial modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012275/pdf
DOI  :  10.1088/1755-1315/17/1/012275

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper describes spatial modeling methods to identify wind erosion hazard (WEH) areas across Australia using the recently available time-series products of satellite-derived ground cover, soil moisture and wind speed. We implemented the approach and data sets in a geographic information system to produce WEH maps for Australia at 500 m ground resolution on a monthly basis for the recent thirteen year period (2000-2012). These maps reveal the significant wind erosion hazard areas and their dynamic tendencies at paddock and regional scales. Dust measurements from the DustWatch network were used to validate the model and interpret the dust source areas. The modeled hazard areas and changes were compared with results from a rule-set approach and the Computational Environmental Management System (CEMSYS) model. The study demonstrates that the time series products of ground cover, soil moisture and wind speed can be jointly used to identify landscape erodibility and to map seasonal changes of wind erosion hazard across Australia. The time series wind erosion hazard maps provide detailed and useful information to assist in better targeting areas for investments and continuous monitoring, evaluation and reporting that will lead to reduced wind erosion and improved soil condition.