Gully morphological characteristics in the loess hilly‐gully region based on 3D laser scanning technique

Wu Hongyan; Xu Ximeng; Zheng Fenli; Qin Chao; He Xu

摘要

Abstract > Gully morphology characteristics can be used effectively to describe the status of gully development. The Chabagou watershed, located in the hilly‐gully region of the Loess Plateau in China, was selected to investigate gully morphological characteristics using a 3D laser scanning technique (LIDAR). Thirty‐one representative gullies located at different watershed locations and gully orders were chosen to quantitatively describe gully morphology and establish empirical equations for estimating gully volume based on gully length and gully surface area. Images and point cloud data for the 31 gullies were collected, and digital elevation models (DEMs) with 10‐cm resolution were generated. ArcGIS 10.1 was then used to extract fundamental gully morphological parameters covering gully length ( <fi>L</fi> ), gully width ( <fi>W</fi> <sub> <fi>T</fi> </sub> ) and gully depth ( <fi>D</fi> ), and some derivative morphological parameters, including gully head curvature ( <fi>C</fi> ), gully width–depth ratio ( <fi>w/d</fi> ), gully bottom‐to‐top width ratio ( <fi>W</fi> <sub> <fi>B</fi> </sub> <fi>/W</fi> <sub> <fi>T</fi> </sub> ), gully surface area ( <fi>A</fi> <sub> <fi>g</fi> </sub> ) and gully volume ( <fi>V</fi> <sub> <fi>g</fi> </sub> ). The results indicated that gullies in the upper watershed and the second order were more developed based on their high values of gully head curvature. The potential for gully development increased from the second order to the fourth order. Within the same gully orders, gullies in the lower watersh </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract XMLNS =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <标题类型=“main”>抽象</ title> > gully形态特征可以有效地用于描述沟壑的地位。位于中国黄土高原丘陵地区的Chabagou流域，选择使用3D激光扫描技术（LIDAR）调查沟壑的形态特征。选择位于不同的流域位置和沟壑订单的三十一位代表性沟渠定量描述了沟壑形态，并建立了基于沟壑长度和沟槽表面积估算沟壑的经验方程。收集了31个沟壑的图像和点云数据，并生成了10厘米分辨率的数字高度模型（DEM）。然后用于覆盖沟壑长度（<fi> l </ fi> <sub> <fi> </ fi> <sub >）和沟壑深度（<fi> d </ fi>），以及一些衍生形态参数，包括沟槽曲率（<fi> c </ fi），沟壑宽度 - 深度比（<fi> w / d < / fi>），沟壑底到顶部宽度比（<fi> w </ fi> <sub> <fi> b </ fi> </ sub> <fi> / w <fi> <sub> < fi> t </ fi> </ sub>），沟槽表面积（<fi> a </ fi> <sub> <fi> g </ fi> </ sub>）和gully体积（<fi> v < / fi> <sub> <fi> g </ fi> </ sub>）。结果表明，上流域的沟渠和二阶更加开发，基于它们的沟壑头曲率的高值。沟壑发展的潜力从第二顺序增加到第四阶。在同一个沟壑订单中，下游的沟渠 </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-22319/'>《Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group》</a> <b style="margin: 0 2px;">|</b><span>2018年第8期</span><b style="margin: 0 2px;">|</b><span>共10页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wu Hongyan&option=202" target="_blank" rel="nofollow">Wu Hongyan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xu Ximeng&option=202" target="_blank" rel="nofollow">Xu Ximeng;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zheng Fenli&option=202" target="_blank" rel="nofollow">Zheng Fenli;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Qin Chao&option=202" target="_blank" rel="nofollow">Qin Chao;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=He Xu&option=202" target="_blank" rel="nofollow">He Xu;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Institute of Soil and Water Conservation State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A &</p> <p>F UniversityYangling 712100 Shaanxi PR China;</p> <p>Institute of Soil and Water Conservation State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A &</p> <p>F UniversityYangling 712100 Shaanxi PR China;</p> <p>Institute of Soil and Water Conservation State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A &</p> <p>F UniversityYangling 712100 Shaanxi PR China;</p> <p>Institute of Soil and Water Conservation State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A &</p> <p>F UniversityYangling 712100 Shaanxi PR China;</p> <p>Institute of Soil and Water Conservation State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauNorthwest A &</p> <p>F UniversityYangling 712100 Shaanxi PR China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=empirical equation&option=203" rel="nofollow">empirical equation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=morphological characteristics&option=203" rel="nofollow">morphological characteristics;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=3D laser scanning technique&option=203" rel="nofollow">3D laser scanning technique;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Loess hilly‐gully region&option=203" rel="nofollow">Loess hilly‐gully region;</a> </p> <div class="translation"> 机译：经验方程;形态特征;3D激光扫描技术;黄土丘陵沟壑区; </div> </li> </ul> </div> </div> <div class="literature 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