生态环境学报2018，Vol.27Issue(6)：1024-1033,10.DOI:10.16258/j.cnki.1674-5906.2018.06.005
基于RWEQ模型的内蒙古高原土壤风蚀研究
Wind Erosion in Inner Mongolia Plateau Using the Revised Wind Erosion Equation
摘要
Abstract
Soil wind erosion is an important index to evaluate the effect of climate change and human activities on ecosystem service function. In this study, the RWEQ model was used to quantitatively reverse the wind erosion modulus of Inner Mongolia Plateau since the 1990s, for revealing its temporal and spatial variation characteristics and influencing factors. The results showed that: (1) The trends for soil wind erosion modulus change were increased first since the 1990s, and then decreased significantly at a rate of 0.87 t·hm-2·a-1since 2000; (2) 87.85% of the soil wind erosion modulus in those areas were downswing, and the moderate or more serious area was reduced by 47 300 km2, of which, the soil wind erosion of western region was controlled effectively, with the soil erosion modulus decreasing from 86.92 t·hm-2·a-1to 59.46 t·hm-2·a-1, and that for the central region was decreased significantly, with the soil erosion modulus decreasing by 14.68 t·hm-2·a-1, while no significantly change was found on that of the eastern region;And (3) the effects of meteorological factors, land use/cover change (LUCC) and artificial disturbance on soil wind erosion intensity change were analyzed in this study, and we described the relationship between wind speed, sandstorm and soil wind erosion (P＜0.001), and revealed that the land use/cover change (such as returning farmland to forest, shrub and grassland) played a key role in reducing soil wind erosion modulus and enhancing regional windbreak and sand-fixation function. The above research results are of great scientific significance for promoting desertification prevention and control and regional sustainable development in those regions.关键词
土壤风蚀/RWEQ模型/土地利用/覆被变化/影响因素/内蒙古高原Key words
soil wind erosion/RWEQ/LUCC/influencing factors/Inner Mongoliam Plateau分类
农业科技引用本文复制引用
迟文峰,白文科,刘正佳,党晓宏,匡文慧..基于RWEQ模型的内蒙古高原土壤风蚀研究[J].生态环境学报,2018,27(6):1024-1033,10.基金项目
国家重点研发计划项目(2016YFC0500200) （2016YFC0500200）
内蒙古自然科学基金项目(2017BS0402) （2017BS0402）
国家重点基础研究发展计划项目(973计划) (2014CB95430201) （973计划）
