Development and controlling factors of gullies and gully complexes, East Coast, New Zealand
Development and controlling factors of gullies and gully complexes, East Coast, New Zealand
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DOI：
10.1002/esp.1321
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发表时间：
2006-02
影响因子：
3.3
通讯作者：
Thomas Parkner;M. Page;T. Marutani;N. Trustrum
中科院分区：
文献类型：
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作者：
Thomas Parkner;M. Page;T. Marutani;N. Trustrum
对新西兰北岛东海岸地区怀亚普盆地一个小型源头集水区的连续航空照片进行了解释，以测量和分析沟壑和沟壑复合体活动区在更长时间跨度(1939-2003年)内的时间变化，并与以前的研究相比具有更高的时间分辨率。我们通过利用流域的地形阈值(坡度-面积关系)来启动沟壑和沟壑复合体的形成，重点研究了在牧场和森林下形成沟壑和沟壑复合体的条件。此外，两种不同岩性的影响以及主要降雨事件的发生与沟谷活动有关。
Sequential aerial photographs of a small headwater catchment in the Waiapu basin, East Coast Region, North Island, New Zealand, were interpreted to measure and analyse temporal changes in active area of gullies and gully complexes for a longer time span (1939–2003) and with higher temporal resolution compared to previous studies. We focus on the conditions leading to the development of gullies and gully complexes under pasture and forest by using topographic thresholds (slope–area relationships) of catchments for the initiation of gullies and gully complexes. In addition, the influence of two different lithologies as well as the occurrence of major rainfall events was related to gully activity.