Effects of enhanced wind erosion on surface soil texture and characteristics of windblown sediments

  • Li J
  • Okin G
  • Epstein H
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Abstract

It is well documented that wind redistributes and transports soil resources in semiarid ecosystems. However, fewer studies have quantitatively linked wind erosion to detailed grain-size fractions and associated nutrient content in surface soil and windblown sediment. In this study, we examined 1) the effects of enhanced wind erosion on surface soil particle-size distribution and 2) carbon C) and nitrogen (N) characteristics of windblown sediments in a typical desert grassland of southern New Mexico. Our results show that surface soil has become noticeably coarser over a 2-year period. In particular, content of soil particles in the category of 250-500 mu m increased significantly, but soil particles in the fractions of 50-125 mu m and

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