[1]谭立海,张伟民,边凯,等.砾石覆盖固沙措施水土保持作用研究——以库布齐沙漠北缘为例[J].水土保持研究,2017,24(06):172-178.
　TAN Lihai,ZHANG Weimin,BIAN Kai,et al.Effect of Gravel Mulch on Soil and Water Conversation—A Case Study in the Northern Edge of Hobq Desert[J].Research of Soil and Water Conservation,2017,24(06):172-178.
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砾石覆盖固沙措施水土保持作用研究——以库布齐沙漠北缘为例

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年06期 页码: 172-178 栏目: 出版日期: 2017-11-24
Title:
Effect of Gravel Mulch on Soil and Water Conversation—A Case Study in the Northern Edge of Hobq Desert
作者:
谭立海1, 张伟民1, 边凯1, 高扬1, 钟帅2
1. 中国科学院 西北生态环境资源研究院 敦煌戈壁荒漠研究站, 兰州 730000;
2. 亿利资源集团, 内蒙古 东胜 017000
Author(s):
TAN Lihai1, ZHANG Weimin1, BIAN Kai1, GAO Yang1, ZHONG Shuai2
1. Dunhuang Gobi Desert Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
2. Elian Resources Group, Dongsheng, Inner Mongolia 017000, China
关键词:
砾石覆盖; 风蚀; 土壤温湿度; 库布齐沙漠
Keywords:
gravel mulch; wind erosion; soil temperature and moisture; Hobq Desert
分类号:
S157
摘要:
库布齐沙漠发展沙产业，风沙防护是必要举措。通过风洞试验与野外观测探讨了砾石覆盖固沙措施的风沙防护效益及其对土壤温湿度的影响，旨在为砾石覆盖在库布齐沙漠防风固沙中的应用提供科学依据。研究表明：3 cm粒径砾石床面具有显著的防风固沙效应：10~16 m/s试验风速下，10%~90%覆盖度砾石床面风蚀防护效应介于49.4%~100%，其中，50%覆盖度砾石床面空气动力学粗糙度达到最大值，风蚀防护效应在96%以上，已达到理想的防风固沙效果。鉴于库布齐沙漠风况特征，从工程防护角度讲，40%覆盖度砾石覆盖固沙措施能够达到防风蚀的目的，风蚀防护效应在93%以上，且能起到白天降温、夜间保温的作用，减少极端气温对作物的伤害，还能提高土壤含水量。本研究可为砾石覆盖固沙措施在干旱区风蚀防护中的应用提供借鉴作用。
Abstract:
The control of wind erosion is crucial to the development of deserticulture in the Hobq Desert. This study discussed the protective effect of gravel mulch against wind erosion as well as its influence on soil temperature and humidity through wind tunnel experiments and field observation, aiming to provide the scientific basis for the application of gravel mulch to wind erosion control in the Hobq Desert. The results show that gravel beds composed of gravels in 3 cm diameter have significant effect of wind-reducing and erosion control, and the inhibition ratio of wind erosion ranges 49.4%~100%. Under experimental wind speeds of 10 to 16 m/s and as gravel coverage reaching 50%, gravel beds are aerodynamically stabile, and the inhibition ratio of wind erosion is more than 96%. In aeolian engineering, gravel mulch in coverage of 40%, with a wind erosion inhibition ratio of more than 93%, can achieve the purpose of preventing wind erosion in the Hobq Desert. Meantime, it can play a role of cooling in daytime and preserving heat at night, thus reducing the damage of extreme temperature to crops and also improving soil moisture content. This study can provide reference for the application of gravel mulch to wind erosion protection in the other arid areas.

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备注/Memo

收稿日期:2016-12-07;改回日期:2017-01-10。
基金项目:国家科技支撑计划项目（2015BAC06B01-02）；中国科学院西北生态环境资源研究院青年人才成长资助基金（51Y651K41）
作者简介:谭立海(1985-),男,山东临朐人,博士,助理研究员,主要从事风沙物理与风沙工程学研究。E-mail:tanlihai18@163.com

更新日期/Last Update: 1900-01-01