Characteristics of Soil Phosphorus Loss from Engineered Slopes Under Simulated Rainfall

Yang Xing; Pang Xin; Cao Zhuobing; Peng Peihao; Xie Chengsheng; Li Wei

doi:10.13961/j.cnki.stbctb.2020.01.004

您当前的位置：

首页 >

文章列表页 >

Characteristics of Soil Phosphorus Loss from Engineered Slopes Under Simulated Rainfall

- Characteristics of Soil Phosphorus Loss from Engineered Slopes Under Simulated Rainfall
- Bulletin of Soiland Water Conservation Vol. 40, Issue 1, Pages: 24-29(2020)
- 作者机构：
  
  1. 成都理工大学地球科学学院,四川,成都,610059
  2. 中国科学院水利部成都山地灾害与环境研究所山地表生过程与生态调控重点实验室,四川,成都,610041
  3. 成都理工大学生态资源与景观研究所,四川,成都,610059
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.01.004
  CLC： S157.1
- Published：2020
- 稿件说明：
移动端阅览
Yang Xing, Pang Xin, Cao Zhuobing, et al. Characteristics of Soil Phosphorus Loss from Engineered Slopes Under Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2020, 40(1): 24-29.
DOI：

Yang Xing, Pang Xin, Cao Zhuobing, et al. Characteristics of Soil Phosphorus Loss from Engineered Slopes Under Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2020, 40(1): 24-29. DOI： 10.13961/j.cnki.stbctb.2020.01.004.

摘要

[目的] 探究西南高山-亚高山地区工程边坡土壤磷素流失机理，为同类型工程边坡生态环境恢复研究提供理论依据。[方法] 采用室内人工模拟降雨试验及原状土搬迁等方法，研究在2种坡度（30°，50°）和4种雨强（25，45，65，85 mm/h）条件下工程边坡全磷（TP），泥沙全磷（STP），溶解态磷（DP）迁移变化特征及其与土壤侵蚀状况的关系。[结果] ①工程边坡径流平均DP浓度整体较低且受雨强影响较小，STP浓度在降雨初期较高，随之降低或趋于稳定。②不同雨强下工程边坡DP流失率、STP流失率变化曲线具有明显差异性，当雨强为25 mm/h和45 mm/h时，工程边坡STP流失率、DP流失率较低且较为稳定；当雨强为65 mm/h和85 mm/h时，工程边坡STP流失率、DP流失率迅速上升后趋于稳定；当雨强由45 mm/h增至65 mm/h时，工程边坡STP流失率、DP流失率迅速增大。③土壤侵蚀率与DP流失率、DP平均浓度、STP流失率和浓度、TP流失率有极显著正相关关系；径流率与DP流失率、STP流失率、TP流失率、DP平均浓度有极显著正相关关系，与STP浓度无显著相关关系。工程边坡TP流失率随径流率、土壤侵蚀率皆以幂函数形式逐渐增加。[结论] 雨强和坡度对工程边坡磷素流失动态变化特征具有显著的影响且整体呈现出先增后减的趋势。

Abstract

[Objective] The mechanism of soil phosphorus loss from engineered slopes in a southwest alpine-subalpine region was studied to provide a theoretical basis for the restoration of the ecological environment on the same type of slopes.[Methods] The characteristics of total phosphorus (TP)

sediment total phosphorus (STP)

dissolved phosphorus (DP) migration

and their relationships with soil erosion

were studied under two slope gradients (30°

50°) and four rainfall intensities (25

and 85 mm/h) using indoor simulated rainfall experiments and undisturbed soil removal.[Results] ① The average DP concentration of runoff from the engineering slopes was generally low and was less affected by rainfall intensity. The STP concentration was higher at the beginning of the rainfall and then decreased

or tended to be stable. ② The curves of the DP loss rate and STP loss rate from the engineered slopes had obvious differences under different rain intensities. When the rain intensities were 25 and 45 mm/h

the STP loss rate and DP loss rate from the engineered slopes were lower and more stable. When the rainfall intensity was 65 and 85 mm/h

the loss rate of STP and DP of the engineering slopes increased rapidly in a parabolic trend and tended to be stable. When the rainfall intensity increased from 45 to 65 mm/h

the loss rate of STP and DP increased rapidly. ③ The soil erosion rate was positively correlated with the DP loss rate

mean DP concentration

STP loss rate and concentration

and TP loss rate. The runoff rate was positively correlated with the DP loss rate

STP loss rate

TP loss rate

and mean DP concentration

but not with the STP concentration. The rate of TP loss from the engineered slopes increased gradually with the runoff rate and soil erosion rate in the form of a power function.[Conclusion] Rainfall intensity and slope gradient have significant influence on change of the dynamics of phosphorus loss from engineered slopes

and the trend of phosphorus loss first increases

and then decreases.

关键词

Keywords

references

王静,郭熙盛,王允青,等.保护性耕作与氮肥后移对巢湖流域麦田磷素流失的影响[J].农业环境科学学报,2011,30(6):1152-1159.

邵明安,张兴昌.坡面土壤养分与降雨、径流的相互作用机理及模型[J].世界科技研究与发展,2001,23(2):7-12.

范晓娟.不同侵蚀强度的风化花岗岩坡地土壤磷素流失模拟研究[D].杭州:浙江大学,2019.

史文海.黄土高原坡面及流域尺度水-土-养分流失耦合模拟研究[D].北京:中国科学院大学,2018.

成玉婷.冻融作用下坡面水沙与氮磷迁移过程及其响应机制研究[D].西安:西安理工大学,2019.

李裕元.坡地磷素迁移研究进展[J].水土保持研究,2006,13(5):1-4.

Lin Jinshi, Huang Yanhe, Zhao Gan, et al. Flow-driven soil erosion processes and the size selectivity of eroded sediment on steep slopes using colluvial deposits in a permanent gully[J]. Catena, 2017,157:47-57.

王蕙,胡秀君,山成菊.雨强和坡度对嵌套砾石红壤坡面产流产沙的影响[J].水土保持学报,2018,32(4):24-29.

黄利玲,王子芳,高明,等.三峡库区紫色土旱坡地不同坡度土壤磷素流失特征研究[J].水土保持学报,2011,25(1):30-33.

徐国策,李占斌,李鹏,等.丹江鹦鹉沟小流域土壤侵蚀和养分损失定量分析[J].农业工程学报,2013,29(10):160-167,296.

陈曦,王雪松,贺京哲,等.模拟降雨条件下秦岭北麓土壤磷素流失特征[J].水土保持学报,2016,30(2):80-87.

王晓燕,王静怡,欧洋,等.坡面小区土壤-径流-泥沙中磷素流失特征分析[J].水土保持学报,2008,22(2):1-5.

张梦,李冬杰,周玥.雨强和坡度对黄土坡面土壤侵蚀及氮磷流失的影响[J].水土保持学报,2018,32(1):85-90.

Li Tianyang, He Binghui, Chen Zhanpeng, et al. Effects of gravel on infiltration, runoff, and sediment yield in landslide deposit slope in Wenchuan earthquake area, China[J]. Environmental Science and Pollution Research, 2016,23(12):12075-12084.

Jomaa S, Barry D A, Heng B C P, et al. Influence of rock fragment coverage on soil erosion and hydrological response:Laboratory flume experiments and modeling[J]. Water Resources Research, 2012,48(5):1-21.

申东,唐家良,章熙峰,等.紫色土丘陵区农业小流域暴雨事件磷素多尺度流失特征[J].水土保持学报,2017,31(5):56-63.

Shields S, Mondala A, Gaviglio K. Effect of extraction conditions on citrate-mediated phosphorus removal and recovery from intercepted particulate runoff[J]. Environmental Technology & Innovation, 2018,10:305-313.

胡宏祥,洪天求,马友华,等.土壤及泥沙颗粒组成与养分流失的研究[J].水土保持学报,2007,21(1):26-29.

吴发启,范文波.坡耕地土壤结皮形成的影响因素分析[J].水土保持学报,2002,16(1):33-36.

Li Tianyang, He Binghui, Chen Zhanpeng, et al. Effects of gravel on concentrated flow hydraulics and erosion in simulated landslide deposits[J]. Catena, 2017,156:197-204.

白玉洁,张风宝,杨明义,等.急陡黄土坡面土壤剥蚀率变化的水动力学机制研究[J].水土保持学报,2018,32(4):1-6.

李波,李晔,韩惟怡,等.人工降雨条件下不同粒径泥沙中氮磷流失特征分析[J].水土保持学报,2016,30(3):39-43.

Views

1058

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of Gravel Content on Soil Erosion and Water Flow Mechanics of Engineering Slope Under Simulated Rainfall Conditions

Experiment Study of Soil Erosion Dynamic Processes on Loess Slope

Impacts of rainfall and vegetation on soil erosion in Dabie Mountains forest reform area

Soil and water conservation effects of two urban shrubs under simulated rainfall conditions

Simulation of soil erosion resistance and soil erosion process in arid valley region of southeastern Xizang Autonomous Region

Related Author

Yang Xing

Zhang Jiaxi

Peng Peihao

Wang Mingtian

GAO Su-juan

WANG Zhan-li

HUANG Ming-bin

ZHANG Kuan-di

Related Institution

Sichuan Meteorological Observatory

西北农林科技大学资源环境学院, 陕西杨凌

中国科学院水利部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, 陕西杨凌

西北农林科技大学水利与建筑工程学院, 陕西杨凌

Changsha General Survey of Natural Resources Center， China Geological Survey， Ningxiang

⁰