Use of beryllium-7 to document soil redistribution following forest harvest operations.
Use of beryllium-7 to document soil redistribution following forest harvest operations.
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DOI：
10.2134/jeq2005.0410
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发表时间：
2006-09
影响因子：
2.4
通讯作者：
P. Schuller;A. Iroumé;D. Walling;Héctor B Mancilla;A. Castillo;R. E. Trumper
中科院分区：
文献类型：
--
作者：
P. Schuller;A. Iroumé;D. Walling;Héctor B Mancilla;A. Castillo;R. E. Trumper
需要有快速和可靠的方法来记录与森林采伐作业有关的土壤侵蚀，以支持制定水土保持的最佳管理做法。为了满足这一需求，研究人员探索了使用7Be测量来估计与个别收获后事件相关的土壤再分配模式和数量的可能性。7Be技术最初是为农业用地开发的，用于估计智利湖区采伐林区（南纬39度44′7”，西经73度10′39”，坡度22%，年平均降雨量2300毫米/年（-1））内与强降雨期相关的土壤再分配。7Be技术提供的结果与使用侵蚀销钉获得的同一时期土壤收益或损失的直接测量结果进行了验证。这两种方法产生的信息是相似的。这项研究的结果表明，在最近采伐的森林地区，使用7Be测量方法记录基于事件的侵蚀是有潜力的。
Rapid and reliable methods for documenting soil erosion associated with forest harvest operations are needed to support the development of best management practices for soil and water conservation. To address this need, the potential for using 7Be measurements to estimate patterns and amounts of soil redistribution associated with individual post-harvest events was explored. The 7Be technique, which was originally developed for use on agricultural land, was employed to estimate soil redistribution associated with a period of heavy rainfall within a harvested forest area located in the Lake Region of Chile (39 degrees 44'7'' S, 73 degrees 10'39'' W; 22% slope; and mean annual rainfall 2300 mm yr(-1)). The results provided by the 7Be technique were validated against direct measurements of soil gain or loss during the same period obtained using erosion pins. The information produced by the two approaches was similar. The results of this study demonstrate the potential for using 7Be measurements to document event-based erosion in recently harvested forest areas.