帮助 关于我们

返回检索结果

典型黑土区小流域浅沟侵蚀季节差异分析
Seasonal discrepancy of ephemeral gully erosion in Northeast China with black soils

查看参考文献22篇

张永光 1   伍永秋 2   汪言在 2   刘宝元 1  
文摘 通过2005年对黑龙江鹤山农场两个小流域进行定位观测,研究了典型黑土区浅沟侵蚀特征及其季节差异,并对作物类型和耕作措施对浅沟侵蚀的影响进行了分析。结果表明,两流域年浅沟侵蚀量达285.9m~3km~(-2)和290.8m~3km~(-2),仅浅沟侵蚀量就超过了黑土区的土壤允许侵蚀量。浅沟侵蚀量呈现出沿坡面波动的变化,沿坡面向下存在浅沟侵蚀的强弱交替带。春夏浅沟侵蚀在侵蚀强度、浅沟形态及主要影响因素3个方面存在差异,春季浅沟侵蚀受融雪、冻融影响显著,侵蚀较夏季严重;与春季相比,夏季浅沟长度变短、宽度变大、深度变浅,浅沟体积与长度的相关性较春季差,这与夏季暴雨历时短、雨强大以及植被盖度大有关。耕作措施和作物类型影响浅沟侵蚀深度和浅沟分布,尤其在夏季比较明显。
其他语种文摘 Ephemeral gully erosion can be a major sediment source serving as main conduits to convey runoff and sediment from most farmland. Ephemeral gully erosion is similar to but differ from both rill and classical gully erosion. But ephemeral gully erosion is often overlooked, and it is also not estimated with rill-interrill erosion prediction models such as the Revised Universal Soil Loss Equation. Soil erosion is increasingly severe in Northeast China with black soils, in which ephemeral gully erosion is an important type of water erosion. However, the existing literature indicated that little research on ephemeral gully erosion has been done in this area. In this paper, ephemeral gully erosion was investigated in spring and summer of 2005 in black soil regions of two small catchments on Heshan Farm of Heilongjiang Province. The aim of the study was to present the characteristics of ephemeral gullies and their seasonal discrepancies and controlling factors. The results show that soil losses due to ephemeral gully erosion fluctuate along the slope, and the high erosivity belts alternate with the low belt. There are also great differences in the morphology, the erosion intensity and controlling factors of ephemeral gully erosion between spring and summer. Ephemeral gully erosion in spring is mainly resulted from snow storm and is significantly influenced by freeze-thaw and snowmelt runoff. Ephemeral gully erosion in spring is slightly severer than that in summer. Ephemeral gully erosion was caused by storm. Compared with that in spring, ephemeral gullies in summer were shorter and shallower, but wider due to the storm characterized by high intensity and low duration. Furthermore, the depth and distribution of ephemeral gully are significantly influenced by tillage practice and crop type, especially in summer.
来源 地理研究 ,2008,27(1):145-154 【核心库】
关键词 浅沟侵蚀 ; 典型黑土区 ; 小流域 ; 季节差异
地址

1. 北京师范大学地理与遥感科学学院, 北京, 100875  

2. 北京师范大学防沙治沙教育部工程研究中心北京师范大学中国沙漠研究中心, 北京, 100875

语种 中文
文献类型 研究性论文
ISSN 1000-0585
学科 农业基础科学
基金 国家973计划
文献收藏号 CSCD:3256133

参考文献 共 22 共2页

1.  Bennett S J. Characteristics of actively eroding ephemeral gullies in an experimental channel. Transactions of the ASAE,2000,43(3):641-649 被引 7    
2.  Casali J. Ephemeral gully erosion in southern Navarra(Spain). Catena,1999,36:65-84 被引 11    
3.  Cerdan O. Rill erosion on cultivated hillslopes during two extreme rainfall events in Normandy France. Soil&Tillage Research,2002,67:99-108 被引 10    
4.  De Santisteban L M. Exploring the role of topography in small channel erosion. Earth Surface Processes and Landforms,2005,30:591-599 被引 3    
5.  Desmet P J J. Importance of slope gradient and contributing area for optimal prediction of the initiation and trajectory of ephemeral gullies. Catena,1999,37:377-392 被引 11    
6.  Foster G R. Modeling ephemeral gully erosion for conservation planning.International. Journal of Sediment Re-search,2005,20:157-175 被引 1    
7.  Oygarden L. Rill and gully development during an extreme winter runoff event in Norway. Catena,2003,50:217-242 被引 20    
8.  Poesen J. Gully erosion in the loam belt of Belgium:Typology and control measures. Soil Erosion on AgricuhuralLand,1998:513-530 被引 1    
9.  Poesen J. Gully erosion and environmental change:importance and research needs. Catena,2003,50:91-133 被引 126    
10.  Vandaele K. Geomorphic threshold conditions for ephemeral gully incision. Geomor-phology,1996,16:161-173 被引 24    
11.  Vandekerckhove L. Topographical thresholds for ephemeral gully initiation in inten-sively cultivated areas of the Mediterranean. Catena,1998,33:271-292 被引 11    
12.  Woodward D E. Method to predict cropland ephemeral gully erosion. Catena,1999,37:393-399 被引 28    
13.  胡刚. GPS和GIS进行短期沟蚀研究初探--以东北漫川漫岗黑土区为例. 水土保持学报,2004,18(4):16-41 被引 43    
14.  刘宝元. 土壤侵蚀预报模型,2001:82-84 被引 2    
15.  阎百兴. 黑土侵蚀速率及其对土壤质量的影响. 地理研究,2005,24(4):499-506 被引 38    
16.  张爱国. 中国水蚀土壤抗剪强度研究. 水土保持通报,2001,21(3):5-10 被引 25    
17.  张永光. 东北漫岗黑土区春季冻融期浅沟侵蚀. 山地学报,2006,24(3):306-311 被引 22    
18.  Kok H. Freeze-thaw effects on soil strength. Proceedings of the International Symposium on Frozen Soil Impacts on Agricultural,Range and Forest Lands,US Army Cold Regions Research Engineering Laboratory Special Report 90-1,1990:70-76 被引 1    
19.  刘宪春. 东北漫岗黑土层厚度空间分布规律研究.博士论文,2005 被引 1    
20.  全国土壤普查办公室. 中国土种志,1994:276-286 被引 6    
引证文献 19

1 方海燕 东北典型黑土区乌裕尔河中游泥沙输移月年时间尺度特征 泥沙研究,2009(2):16-21
被引 9

2 焦剑 东北地区融雪期径流及产沙特征分析 地理研究,2009,28(2):333-344
被引 24

显示所有19篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护:中国科学院文献情报中心
地址:北京中关村北四环西路33号 邮政编码:100190 联系电话:(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号