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The Role of Soil Surface Crusting in Desertification and Strategies to Reduce Crusting 总被引:1,自引:0,他引:1
Soil crusting decreases infiltration, increases erosion, and impedes vegetation establishment, so reducing the impact of crusting
is of major importance in combating desertification. Although surface crusting has been the subject of considerable research
over the past 50 years or more, the practical management of soil crusts remains a challenge for many dryland communities.
Crusting occurs in two steps, an initial aggregate breakdown period that occurs under rainfall and a subsequent hardening
phase during drying. Several factors influence crust development, but the single most important one is soil aggregate stability.
Strategies to reduce crusting can be based either on protecting the surface from raindrop impact or improving aggregate stability,
or a combination of both. However, crust control is labor and/or capital intensive and must be thought out clearly in terms
of the benefits to be achieved. 相似文献
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