1. 内蒙古农业大学沙漠治理学院,呼和浩特,100018
2. 荒漠生态系统保护与修复国家林业和草原局重点实验室,呼和浩特,100018
[ "李龙(1989-),男,博士,副教授,主要从事水土保持研究。E-mail:lilongdhr@126.com" ]
纸质出版:2021
移动端阅览
李龙, 秦富仓, 钱秋颖, 等. 冲刷条件下裸露砒砂岩区坡面细沟微形态变化及其侵蚀特征[J]. 水土保持学报, 2021,35(5):37-43.
LI Long, QIN Fucang, QIAN Qiuying, et al. Micro-morphological Changes and Erosion Characteristics of Rill on Bare Pisha Sandstone Slope Under Scouring Conditions[J]. 2021, 35(5): 37-43.
李龙, 秦富仓, 钱秋颖, 等. 冲刷条件下裸露砒砂岩区坡面细沟微形态变化及其侵蚀特征[J]. 水土保持学报, 2021,35(5):37-43. DOI: 10.13870/j.cnki.stbcxb.2021.05.006.
LI Long, QIN Fucang, QIAN Qiuying, et al. Micro-morphological Changes and Erosion Characteristics of Rill on Bare Pisha Sandstone Slope Under Scouring Conditions[J]. 2021, 35(5): 37-43. DOI: 10.13870/j.cnki.stbcxb.2021.05.006.
选择裸露砒砂岩坡面为研究对象,基于野外径流小区冲刷试验结合三维激光扫描技术,研究3种流量(60,100,200 L/h)与4个坡度(5°,10°,20°,30°)组合冲刷下砒砂岩区坡面细沟形态演变特征及径流侵蚀产沙机制。结果表明:坡面细沟在坡下最先发育,随着冲刷流量和坡面坡度的增大而向上延伸;细沟出现的时间随着坡度的增加而缩短;<10°坡面上细沟的形态表现为"宽浅型",最大宽深比为0.038,>20°坡面细沟的形态为"深窄型",最小宽深比为0.017;随着冲刷强度和坡度的增加,细沟宽深比变小,而细沟数量、细沟密度、细沟复杂度、细沟割裂度等指标均增大。坡度和冲刷强度共同影响着坡面产沙率变化,随着坡度和冲刷强度的提升坡面产沙率表现为先增后减的趋势。细沟宽深比与坡面产沙量呈现极显著负相关(-0.935,P<0.01),细沟密度与细沟割裂度与产沙量呈显著正相关关系(0.888,0.944,P<0.01)。
Taking bare Pisha Sandstone slope as the research object
based on the field runoff plot scouring test and three-dimensional laser scanning technology
the evolution of rill micro morphology and erosion sediment yield mechanism on Pisha Sandstone slope were studied under combined erosion with three kinds of flow (60
100 and 200 L/h) and four slopes (5°
10°
20° and 30°). The results showed that the rill developed first at the bottom of the slope and then extended upward with the increasing of scouring flow and slope gradient. The occurrence time of rill decreased with the increasing of slope gradient. The rill shape was "wide and shallow type" on the slope less than 10°
the maximum width to depth ratio was 0.038. While the rill shape was "deep and narrow type" on the slop more than 20°
the minimum width to depth ratio was 0.038. With the increasing of erosion intensity and slope gradient
the ratio of rill width to depth became smaller
while the number
density
complexity and fragmentation of rill increased. Slope gradient and scouring intensity affected the change of slope sediment yield together. With the increasing of slope gradient and scouring intensity
the sediment yield increased first and then decreased. There was a significant negative correlation between ratio of rill width to depth and slope sediment yield (-0.935
P<0.01)
and a significant positive correlation between rill density
rill fragmentation and sediment yield (0.888
0.944
P < 0.01).
姚文艺, 刘国彬.新时期黄河流域水土保持战略目标的转变与发展对策[J]. 水土保持通报, 2020, 40(5), 333-340.
Niu Y B, Gao Z L, Li Y H, et al. Characteristics of rill erosion in spoil heaps under simulated inflow:A field runoff plot experiment[J]. Soil and Tillage Research, 2020, 202:e104655.
李霞, 金鑫, 谢斯琴, 等.间歇降雨对红壤坡面土壤侵蚀特征的影响[J]. 水土保持学报, 2021, 35(1):96-102.
Yang Y, Shi Y Z, Liang X Z, et al. Evaluation of structure from motion (sfm) photogrammetry on the measurement of rill and interrill erosion in a typical loess[J]. Geomorphology, 2021, 385, 15:e107734.
吴淑芳, 刘政鸿, 霍云云, 等.黄土坡面细沟侵蚀发育过程与模拟[J]. 土壤学报, 2015, 52(1):48-56.
张永东, 吴淑芳, 冯浩, 等.黄土陡坡细沟侵蚀动态发育过程及其发生临界动力条件试验研究[J]. 泥沙研究, 2013(2):25-32.
吴秉校, 侯雷, 宋敏敏, 等.基于汇流累积计算的沟壑密度分析方法[J]. 水土保持研究, 2017, 24(3):39-44.
张建文.覆沙坡面细沟侵蚀发育过程与形态特征研究[D].西安:西安理工大学, 2020.
马小玲, 张宽地, 杨帆, 等.坡面细沟侵蚀断面形态发育影响因素分析及动力特性试验[J]. 农业工程学报, 2017, 33(4):209-216.
张若曦, 秦富仓, 李龙, 等.水力侵蚀对砒砂岩区土壤有机碳空间变异性的影响[J]. 水土保持学报, 2020, 34(6):117-124.
常平, 李晓丽, 李明玉, 等.冲蚀条件下砒砂岩坡面细沟侵蚀特性分析[J]. 人民黄河, 2018, 40(5):98-102, 106.
陈鹏, 张铁钢, 董智, 等.水流驱动下不同灌草格局对泥沙分选特征的影响[J]. 水土保持学报, 2020, 34(2):93-100, 221.
卫午毓, 肖培青, 张攀, 等.复合侵蚀作用下砒砂岩坡面产流产沙过程试验[J]. 水土保持学报, 2020, 34(2):18-22.
胡剑汝, 饶良懿, 申震洲.基于WEPP的砒砂岩坡面复合侵蚀治理生态水文效应评价[J]. 水土保持学报, 2020, 34(2):123-129, 238.
Nouwakpo S K, Weltz M A, Mcgwire K C, et al. Insight into sediment transport processes on saline rangeland hillslopes using three-dimensional soil microtopography changes[J]. Earth Surface Processes and Landforms, 2016, 42(4):681-696.
车晓翠, 赵文婷, 沈海鸥, 等.黑土坡面细沟形态及剖面特征试验研究[J]. 水土保持通报, 2020, 40(5):55-59.
何育聪, 郑浩杰, 韩剑桥.间歇性与连续性降雨对黄土坡面细沟侵蚀影响的比较[J]. 水土保持学报, 2020, 34(6):8-13.
丁文斌, 史东梅, 何文健, 等.放水冲刷条件下工程堆积体边坡径流侵蚀水动力学特性[J]. 农业工程学报, 2016, 32(18):153-161.
任涓.变流量冲刷条件下细沟形态发育特性及侵蚀产沙耦合机理研究[D].陕西杨凌:西北农林科技大学, 2019.
焦念, 王占礼, 刘俊娥, 等.黄土坡面细沟水流流速试验研究[J]. 水土保持通报2012, 32(5):117-121.
沈海鸥, 郑粉莉, 温磊磊, 等.降雨强度和坡度对细沟形态特征的综合影响[J]. 农业机械学报, 2015, 46(7):162-170.
裴冠博, 龚冬琴, 付兴涛.晋西黄绵土坡面细沟形态及其对产流产沙的影响[J]. 水土保持学报, 2017, 31(6):79-84, 182.
张攀, 姚文艺, 唐洪武, 等.黄土坡面细沟形态变化及对侵蚀产沙过程的影响[J]. 农业工程学报, 2018, 34(5):114-119.
0
浏览量
851
下载量
4
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621