ISWC OpenIR  > 水保所知识产出(1956---)
壤中流和土壤解冻深度对黑土坡面 融雪侵蚀的影响
王伦1; 郑粉莉1,2; 师宏强1; 赵录友2; 莫帅豪1
2021
发表期刊应用生态学报
卷号32期号:12页码:4177-4185
摘要

融雪侵蚀是东北黑土区土壤流失的一种重要形式,而目前有关壤中流和土壤解冻深
度对融雪径流侵蚀的影响研究较少。 本研究采用室内模拟试验,设计两个融雪径流量(1 和 4
L·min
-1
)和两个土壤解冻深度(5 和 10 cm),以及有、无壤中流处理,分析壤中流和土壤解冻
深度对黑土区坡面融雪侵蚀的影响。 结果表明: 1)壤中流处理下坡面融雪径流深度和侵蚀
量分别是无壤中流处理的 1.1~1.2 倍和 1.3~1.9 倍。 两个融雪径流量下,当土壤解冻深度由
5 cm 增加到 10 cm 时,无壤中流处理下坡面融雪径流深度和侵蚀量分别增加 10.0%~13.5%
和 15.4%~37.1%;而有壤中流处理下坡面融雪径流深度增加 6.5%~8.5%,融雪侵蚀量则无显
著变化。 2)坡面细沟发育受壤中流、土壤解冻深度和融雪径流量的综合影响,各处理下细沟
侵蚀量占坡面融雪侵蚀量的 72%以上。 3)壤中流发生使坡面径流流速和径流剪切力分别增
加 20.3%~23.2%和 37.0%~51.3%,Darcy⁃Weisbach 阻力系数减少 9.0%~21.4%,从而增加了
坡面融雪侵蚀量;且壤中流发生促进了坡面细沟发育,其细沟侵蚀量较无壤中流处理增加
43.6%~69.9%,也导致坡面融雪侵蚀量增加。 无壤中流条件下,土壤解冻深度加剧坡面融雪
侵蚀的主要原因是随着土壤解冻深度的增加,坡面径流侵蚀能力和可蚀性物质来源增加,导
致融雪径流侵蚀量增加。 此外,土壤解冻深度对壤中流条件下细沟形态发育也有明显的影
响,土壤解冻深度为 5 cm 时,细沟横向加宽作用显著;而土壤解冻深度为 10 cm 时,细沟下切
侵蚀作用更显著。 本研究加深了对黑土区融雪侵蚀机理的认识,可为水蚀模型的研发提供理
论指导。

其他摘要

Snowmelt erosion is an important way of soil loss in Chinese Mollisol region. However,
little is known about the effects of seepage flow and soil thaw depth on hillslope snowmelt runoff ero⁃
sion. An indoor simulated experiment was conducted to analyze the impacts of seepage flow and soil
thaw depth on hillslope snowmelt erosion. There were two snowmelt flow rates (1 and 4 L·min
-1
),
two soil thaw depths (5 and 10 cm), and two near⁃surface hydrological conditions (with and with⁃
out seepage flow). The results showed that hillslope runoff depth and soil erosion amount in the
treatment with seepage flow were 1.1 to 1.2 times and 1.3 to 1.9 times of those in the treatment with⁃
out seepage flow, respectively. Under two snowmelt flow rates, when soil thaw depth increased from5 cm to 10 cm, hillslope runoff depth and soil erosion amount increased by 10.0% to 13.5% and
15.4% to 37.1% in the treatment without seepage flow, respectively. In the treatment with seepage
flow, when soil thaw depth shifted from 5 cm to 10 cm, hillslope runoff depth increased by 6.5% to
8.5%, and soil erosion amount remained stable. Moreover, hillslope rill development was compre⁃
hensively influenced by seepage flow, soil thaw depth, and snowmelt flow rate, with rill erosion
amount occupying more than 72% of hillslope snowmelt erosion amount. Compared with the treat⁃
ment without seepage flow, flow velocity and shear stress under the treatment with seepage flow
increased by 20.3% to 23.2% and 37.0% to 51.3%, respectively; but Darcy⁃Weisbach friction
coefficient reduced by 9.0% to 21.4%, which caused an increase of hillslope snowmelt erosion. In
addition, seepage flow enhanced rill development, which caused rill erosion amount to increase by
43.6% to 69.9% compared with the treatment without seepage flow, and it further resulted in the
increase of hillslope snowmelt erosion amount. The main reason for soil thaw depth enhancing hill⁃
slope snowmelt erosion amount under the treatment without seepage flow was that both sloping runoff
erosivity and erodible materials increased with increasing soil thaw depth. Furthermore, soil thaw
depth had a significant impact on hillslope rill morphology development under the treatment with
seepage flow. Rill widening process was dominated when soil thaw depth was 5 cm, whereas rill in⁃
cision process was dominant when soil thaw depth was 10 cm. This study could improve the under⁃
standing of hillslope snowmelt erosion mechanism in Chinese Mollisol region and provide theoretical
guidance for the development of water erosion model.

关键词壤中流 土壤解冻深度 融雪径流 细沟侵蚀
收录类别中文核心期刊要目总览
语种中文
文献类型期刊论文
条目标识符sbir.nwafu.edu.cn/handle/361005/10407
专题水保所知识产出(1956---)
作者单位1.西北农林科技大学水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室
2.中国科学院水利部水土保持研究所
推荐引用方式
GB/T 7714
王伦,郑粉莉,师宏强,等. 壤中流和土壤解冻深度对黑土坡面 融雪侵蚀的影响[J]. 应用生态学报,2021,32(12):4177-4185.
APA 王伦,郑粉莉,师宏强,赵录友,&莫帅豪.(2021).壤中流和土壤解冻深度对黑土坡面 融雪侵蚀的影响.应用生态学报,32(12),4177-4185.
MLA 王伦,et al."壤中流和土壤解冻深度对黑土坡面 融雪侵蚀的影响".应用生态学报 32.12(2021):4177-4185.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
壤中流和土壤解冻深度对黑土坡面融雪侵蚀的(1886KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[王伦]的文章
[郑粉莉]的文章
[师宏强]的文章
百度学术
百度学术中相似的文章
[王伦]的文章
[郑粉莉]的文章
[师宏强]的文章
必应学术
必应学术中相似的文章
[王伦]的文章
[郑粉莉]的文章
[师宏强]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 壤中流和土壤解冻深度对黑土坡面融雪侵蚀的影响_王伦.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。