中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 裸露耕地风沙运动特性试验研究 农业环境科学学报 2005,24 (05)
Position: Home > Articles > Characteristic of Wind-Sand Movement on Bare Tillage Journal of Agro-Environment Science 2005,24 (05)

裸露耕地风沙运动特性试验研究

作  者：
申向东;邹春霞
单  位：
内蒙古农业大学
关键词：
风蚀量;风沙运动;耕地
摘  要：
以内蒙古阴山北部的典型农牧交错带耕地为试验区,利用手持式风速仪测定风速,JY222型地温仪测定地温,SC-I型集沙仪测定风蚀量,通过观测不同风速下的风蚀情况,获得裸露耕地风沙运动规律的参数——沙粒的起风速度、沙粒沿高度变化、风速、风蚀量的基本资料,详尽地分析了裸露耕地风沙运动的影响因素及运动特征。结果表明,耕地风沙运动与沙漠风沙运动不同,得出了耕地风沙运动的基本特性和运动规律。
译  名：
Characteristic of Wind-Sand Movement on Bare Tillage
作  者：
SHEN Xiang-dong, ZOU Chun-xia(Inter Mongolia Agricultural University, Huhhot 010018, China)
关键词：
amount of wind erosion; wind-sand movement; tillage
摘  要：
The north Yin Mountain of Inner Mongolia is one of the most serious wind erosion places. The experimental field lies in E, N and an altitude of 1 490.70 m, located in west north of Siziwang County in this region. It is a typical ecotone between agriculture and animal husbandry with monsoon climate. The wind velocity, the soil temperature and the amount of soil erosion were measured by portable anemometer, JY222-geothermometer and SC-I sediment collector, respectively. The parameters stating the law of wind-sand movement, such as the particle threshold velocity, particle size distribution in height, wind velocity and amount of wind erosion, were determined by measuring the soil loss in different wind speed, the factors and characteristics of wind-sand movement were analyzed on bare tillage. The field experiment showed the particle (0.25 mm) threshold velocity at a height of 1m was 9.5 m·s-1. The distribution of wind erosion sand in height could be expressed as exponential form, based on the statistical analysis for the amount of windblown sand in different heights collected by three sediment collector in three fields in March 27, 2004. The sediment reduced with the increase of height as exponential function. 31.65% of the whole soil loss was carried away by the wind within a height of 0 to 5 cm, 41.2% within a height of 0 to 10 cm, showing the wind erosion of soil by a transport process occurred within 10 cm topsoil. The distribution law of wind speed variation and the probability density function for maximum wind speed was analyzed according to maximum entropy principle and the data collected from March 5 to April 15 in 2004. The difference in wind-sand movement between the bare tillage and the desert was compared. This fundamental characteristics and mechanics movement law of wind-sand laid foundations for dynamic wind-sand movement characteristic of bare tillage.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46