Estimation of wind and water erosion based on slope aspects in the crisscross region of the Chinese Loess Plateau
Estimation of wind and water erosion based on slope aspects in the crisscross region of the Chinese Loess Plateau
复制标题
黄土高原纵横交错地区基于坡向的风水侵蚀估算
DOI：
10.1007/s11368-017-1855-5
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发表时间：
2018-04
影响因子：
3.6
通讯作者：
Fengbao Zhang
中科院分区：
文献类型：
--
作者：
Jiaqiong Zhang;Mingyi Yang;Xijun Sun;Fengbao Zhang
目的黄土高原沟壑区是风蚀和水蚀共同作用的地区，二者的相对贡献尚不清楚。结合分析of137Cs库存，表层土壤样品的属性，和当地的风力条件允许测量土壤侵蚀总量，以及风和水的侵蚀率，独立影响的坡度在一个实验地点在研究area.Materials和MethodsThis研究选择了8个直坡进行调查。虽然这些斜坡具有相似的坡度、长度、海拔、形状、植被条件、土壤类型和土地利用类型，但它们面临着不同的方面。本研究测定了位于山顶的百年古庙附近的平坦草地上土壤的有机质含量、颗粒大小、比表面积和137Cs含量，包括平均137Cs参考含量。在降雨和环境条件相似的条件下，坡面水蚀相似，风蚀是造成坡面水蚀差异的主要原因。通过逐步线性回归分析证实了这一假设，并根据总侵蚀量和水蚀量估算了风蚀量。结果与讨论根据总侵蚀量估算和风力条件分析，东向坡几乎没有发生风蚀，其发生的侵蚀量（91.4 t ha−1year−1）主要是由水引起的。基于所有山坡上的水蚀相似的假设，西向山坡的水蚀速率与东坡相似，而风蚀速率为16.9 t ha−1year−1。西北坡的风蚀速率最高（42.3 t ha−1year−1），而与之相对的东南坡的风积速率最高。风蚀平均贡献27.4%的总侵蚀迎风坡（西北和北部），而沉积发生在相反的背风坡（东南和南部）。结论虽然水侵蚀被认为是土壤流失的主要驱动力，在这个流域，风蚀的影响不能忽视。这主要是对坡面侵蚀差异的响应。
PurposeThe crisscross region of the Chinese Loess Plateau is affected from both wind and water erosion, and their relative contributions remain unclear. A combination analysis of137Cs inventories, surface soil sample properties, and the local wind condition allows the measurements of total soil erosion, as well as the rates of wind and water erosion that are independently affected by slope aspect at a experimental site in the study area.Materials and methodsThis study selected eight straight slope for investigation. Although the slopes had similar gradients, lengths, elevations, shapes, vegetation conditions, soil types, and land-use types, they faced different aspects. This study tested the soil organic matter content, particle size, specific surface area, and137Cs inventory, including the mean137Cs reference inventory from a region of flat grassland near a century-old temple located on the top of a hillslope. Water erosion were assumed to be similar for slope aspects on condition that rainfall and environmental conditions were similar, and differences in erosion on slope aspects were mainly attributable to wind erosion. This assumption was confirmed by stepwise linear regression analysis, and wind erosion was estimated from total erosion and water erosion.Results and discussionThe east-facing slope experienced almost no wind erosion, and erosion (91.4 t ha−1year−1) it experienced was primarily caused by water according to estimation of total erosion and analysis to wind conditions. Based on the assumption that water erosion was similar on all slopes, the west-facing slope exhibited a similar rate of water erosion to the east slope, while the rate of wind erosion was 16.9 t ha−1year−1. The northwest slope had the highest wind erosion rate (42.3 t ha−1year−1), while the slope opposite to it (the southeast slope) had the highest wind deposition rate. Wind erosion on average contributed 27.4% to total erosion on windward slopes (northwest and north), while deposition occurred on the opposite leeward slopes (southeast and south).ConclusionsAlthough water erosion was found to be the primary driver of soil loss in this watershed, the effect of wind erosion cannot be neglected. It was mainly response for the erosion difference on slope aspects.
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影响因子：
3.6
作者：
Xunming Wang;L. Lang;Ting Hua;Hui Li;Caixia Zhang;Wenyong Ma
通讯作者：
Xunming Wang;L. Lang;Ting Hua;Hui Li;Caixia Zhang;Wenyong Ma
DOI：
10.1080/04353676.1994.11880410
发表时间：
1994-04
影响因子：
1.5
作者：
Xin-bao Zhang;T. Quine;D. Walling;Zhou Li
通讯作者：
Xin-bao Zhang;T. Quine;D. Walling;Zhou Li
DOI：
10.1007/0-306-48054-9
发表时间：
2003
期刊：
--
影响因子：
--
作者：
F. Zapata
通讯作者：
F. Zapata
影响因子：
3.7
作者：
Yi Zhou;Bing Guo;Shixing Wang;H. Tao;Wenliang Liu;Guang Yang;Jinfeng Zhu
通讯作者：
Yi Zhou;Bing Guo;Shixing Wang;H. Tao;Wenliang Liu;Guang Yang;Jinfeng Zhu
影响因子：
3
作者：
Z. Dong;P. Lv;Zhengcai Zhang;Junfeng Lu
通讯作者：
Z. Dong;P. Lv;Zhengcai Zhang;Junfeng Lu