The measurement of wind erosion through field survey and remote sensing: a case study of the Mu Us Desert, China

The measurement of wind erosion is not only important to understand wind erosion itself, but also an important scientific step in efforts to reverse the process of desertification. This study develops a model that predicts sand transport flux at pixel level based on the quantitative relationship between remotely sensed vegetation coverage and observed sand transport rate data. The data were collected from field surveys in the sandy area of Yuyang County, which is located in the Mu Us Desert. The study found that the sand transport flux was 9,643 kilograms per meter annually (kga m) for a mobile dune, 6,394 kga m for a semi-mobile dune, 2,634.5 kga m for bare cultivated land, and 127.7 kga m for a semi-fixed dune. Using the sand flux derived by our model, the wind erosion modulus in the Yuyang sandy area was found to be 1,673.18 tons per square kilometer annually [ta (km)] in 1986, 1,568.10 in 1996, and 1,685.04 in 2005. Mean vegetation coverage in the sandy area of Yuyang in 1986, 1996, and 2005 was 42.39, 48.07, and 48.03 %, respectively, indicating that overall, vegetation coverage Y. Yue J. Wang (&) School of Geography, Beijing Normal University, Beijing 100875, China e-mail: [email protected] Y. Yue A.-x. Zhu Department of Geography, University of Wisconsin-Madison, Madison, WI 53706, USA Y. Yue P. Shi X. Zou J. Wang State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China X. Ye Department of Geography, Kent State University, Kent, OH 44242, USA A.-x. Zhu Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application and School of Geography, Nanjing Normal University, Nanjing, China A.-x. Zhu State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China 123 Nat Hazards DOI 10.1007/s11069-014-1516-6