[1]孙玉柱,郑粉莉,张姣.基于LIDAR和GIS技术的坡面侵蚀沟空间发育分析[J].水土保持研究,2014,21(03):20-24.
　SUN Yu-zhu,ZHENG Fen-li,ZHANG Jiao.Analysis of Gully Erosion Development Based on LIDAR and GIS[J].Research of Soil and Water Conservation,2014,21(03):20-24.
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基于LIDAR和GIS技术的坡面侵蚀沟空间发育分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 21 期数: 2014年03期 页码: 20-24 栏目: 出版日期: 2014-06-28
Title:
Analysis of Gully Erosion Development Based on LIDAR and GIS
作者:
孙玉柱1,2, 郑粉莉1,2, 张姣1,2
1. 西北农林科技大学 资源环境学院, 陕西 杨凌 712100;
2. 中国科学院 水利部 水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100
Author(s):
SUN Yu-zhu1,2, ZHENG Fen-li1,2, ZHANG Jiao1,2
1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Insitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
LIDAR; GIS; 沟蚀; 断面分析
Keywords:
LIDAR; GIS; gully erosion; cross-section analysis
分类号:
S157
摘要:
三维激光扫描技术（LIDAR）和地理信息系统（GIS）技术的综合应用是土壤侵蚀定量研究的重要手段，结合LIDAR和GIS技术，将LIDAR动态监测的连续4场次模拟降雨实验数据导入GIS数据处理软件并生成DEM，采用断面分析方法，提取坡长方向上单位长度侵蚀沟断面的宽度和深度，分析坡面侵蚀沟发育特征。结果表明，坡面3.5～5.5 m坡长处是沟蚀发育最为活跃的区段，且随着降雨过程的进行，沟蚀发育活跃区向坡面上部移动。侵蚀沟发育早期以溯源侵蚀为主，后期以沟壁侧蚀和崩塌为主。断面分析方法能够比较准确地分析坡面沟蚀发育的时空分布特征，为土壤侵蚀的定量研究提供了一种新的研究方法。
Abstract:
The combination of LIDAR and GIS is an important method in the quantitative research of slope-gully erosion of hill. In this study, the gully can be regarded as a composition of numerous sections, the variation characteristics of a plurality of continuous sections reflect the gully erosion development characteristics. Based on the soil loss data collected from 4 events of individual rainfall experiments measured by LIDAR, we used the GIS desktop software to turn the data to DEM, and then extract the width and length by cross-section analysis. The results showed that the position of 3.5 m to 5.5 m was the most active gully erosion site and the key position moved up as the rainfalls went on; the headwater erosion occurred in the early and medium term of the erosion, the collapse and erosion of the gully cliff were the main process. Cross-section analysis is an effective method to study the temporal and spatial patterns of gully erosion development, and provids a new way on the quantitative research of soil erosion.

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备注/Memo

收稿日期:2013-05-29;改回日期:2013-10-31。
基金项目:国家自然基金项目（41271299，40871137）
作者简介:孙玉柱(1982-)男,河北深州人,硕士研究生,研究方向为地图学与地理信息系统。E-mail:sun_yu_zhu@163.com
通讯作者:郑粉莉(1960-),女,陕西蓝田人,教授,博士生导师,主要从事土壤侵蚀机理及模拟研究。E-mail:flzh@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01