人工降雨条件下植被覆盖对黄土坡面养分随径流泥沙迁移影响的试验研究

李家明; 汪建芳; 杨艳芬; 王兵

doi:10.13870/j.cnki.stbcxb.2021.04.002

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人工降雨条件下植被覆盖对黄土坡面养分随径流泥沙迁移影响的试验研究

更新时间：2025-03-12

- 人工降雨条件下植被覆盖对黄土坡面养分随径流泥沙迁移影响的试验研究
- Experimental Study on the Influence of Vegetation Cover on Loess Slope Surface Nutrient Transport Along with Runoff and Sediment Under Artificial Rainfall
- 水土保持学报 2021年35卷第4期页码：7-13
- 作者机构：
  
  1. 中国科学院教育部水土保持与生态环境研究中心, 陕西杨凌,712100
  2. 中国科学院大学,北京,100049
  3. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
- 作者简介：
  
  [ "李家明(1994-),男,硕士研究生,主要从事土壤侵蚀与水土保持研究。E-mail:lijiaming19@mails.ucas.ac.cn" ]
- 基金信息：
  
  国家重点研发计划项目"黄土高原区域生态系统演变规律和维持机制研究"（2016YFC0501603），"黄土丘陵沟壑区植被功能提升与山地果园管理关键技术及示范"（2016YFC0501703），中国科学院西部青年学者项目"黄土高原退耕草地近地表特征变化及其对土壤侵蚀过程的影响"（XAB2019A04）
- DOI：10.13870/j.cnki.stbcxb.2021.04.002
  中图分类号： S157
- 纸质出版：2021
- 稿件说明：
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李家明, 汪建芳, 杨艳芬, 等. 人工降雨条件下植被覆盖对黄土坡面养分随径流泥沙迁移影响的试验研究[J]. 水土保持学报, 2021,35(4):7-13.

LI Jiaming, WANG Jianfang, YANG Yanfen, et al. Experimental Study on the Influence of Vegetation Cover on Loess Slope Surface Nutrient Transport Along with Runoff and Sediment Under Artificial Rainfall[J]. 2021, 35(4): 7-13.
李家明, 汪建芳, 杨艳芬, 等. 人工降雨条件下植被覆盖对黄土坡面养分随径流泥沙迁移影响的试验研究[J]. 水土保持学报, 2021,35(4):7-13. DOI： 10.13870/j.cnki.stbcxb.2021.04.002.

LI Jiaming, WANG Jianfang, YANG Yanfen, et al. Experimental Study on the Influence of Vegetation Cover on Loess Slope Surface Nutrient Transport Along with Runoff and Sediment Under Artificial Rainfall[J]. 2021, 35(4): 7-13. DOI： 10.13870/j.cnki.stbcxb.2021.04.002.

摘要

植被覆盖可有效保护地表，抑制产流产沙过程，进而影响坡面养分迁移过程。选取黄土高原典型白羊草和铁杆蒿草地，通过人工模拟降雨试验（雨强60 mm/h，历时60 min，坡度15°），研究植被不同盖度下（10%，20%，30%，45%，60%，80%）坡面径流、泥沙养分特征。结果表明：（1）土壤有机质、全氮和全磷含量均随植被盖度增加呈线性增加（R2≥0.63），相对于铁杆蒿样地，白羊草样地土壤有机质和全磷含量分别增加28.8%~107.1%和10.6%~25.0%，全氮含量减少2.6%~42.5%。（2）径流中有机质、全氮和全磷浓度随植被盖度的增加而减少0.6%~63.7%，但种间差异不显著（P>0.05）。径流中有机质、全氮和全磷量随植被盖度的增加显著降低1.9%~83.9%，且当植被盖度≥20%时，白羊草样地径流中有机质、全氮和全磷的量较铁杆蒿分别显著减少28.4%~66.4%，10.7%~55.8%和3.3%~64.7%。（3）泥沙中有机质、全氮和全磷的量随植被盖度的增加减幅为-59.5%~65.1%，平均减少5.8%，其泥沙中养分的含量白羊草总体低于铁杆蒿。白羊草和铁杆蒿泥沙有机质、全氮和全磷的量随盖度增加分别呈指数函数（R2≥0.78）和先增后减的下降趋势，其泥沙中养分的量显著减少69.9%~99.3%。（4）白羊草和铁杆蒿样地径流泥沙中有机质、全氮和全磷总量随植被盖度增加分别呈指数函数（R2≥0.53）和先增后减的下降趋势，且当植被盖度≥45%时，白羊草有机质、全氮和全磷总量较铁杆蒿样地分别减少33.7%~71.8%，50.1%~53.6%和48.1%~64.3%。（5）白羊草和铁杆蒿样地泥沙中有机质、全氮和全磷富集比随盖度的增加呈线性降低（R2≥0.56）。2种植被土壤有机质和全磷主要随泥沙迁移为主，土壤全氮主要以径流迁移为主。研究成果为植被覆盖影响坡面养分迁移机制提供理论参考。

Abstract

Vegetation cover can effectively protect the ground surface

inhibit the process of runoff and sediment production

and then affect the process of nutrient migration on slopes. Typical Bothriochloa ischaemum and Artemisia gmelini grasslands in the Loess Plateau were selected and simulated rainfall experiments (rain intensity 60 mm/h

duration 60 min

slope 15°) were used to study the slope runoff and sediment nutrient characteristics under different coverage conditions (10%

20%

30%

45%

60%

80%). The results showed that: (1) The contents of soil organic matter

total nitrogen and total phosphorus increased linearly with the increase of coverage (R2≥0.63). Compared with Artemisia gmelini plot

the contents of soil organic matter and total phosphorus in Bothriochloa ischaemum plot increased by 28.8%~107.1% and 10.6%~25.0% respectively

while the contents of total nitrogen decreased by 2.6%~42.5%. (2) With the increase of vegetation coverage

the concentrations of organic matter

total nitrogen and total phosphorus in runoff decreased by 0.6%~63.7%

but there was no significant difference between the two species (P>0.05). The amount of organic matter

total nitrogen and total phosphorus in runoff decreased by 1.9%~83.9%

and when vegetation coverage was ≥20%

the amount of organic matter

total nitrogen and total phosphorus in runoff in Bothriochloa ischaemum sample decreased by 28.4%~66.4%

10.7%~55.8% and 3.3%~64.7%

respectively

compared with Artemisia gmelini sample. (3) The contents of organic matter

total nitrogen and total phosphorus in the sediment decreased by -59.5%~65.1% with the increase of vegetation coverage

with an average decrease of 5.8%. The nutrients amount of the sediment Bothriochloa ischaemum were generally lower than those of Artemisia gmelini. The amount of Bothriochloa ischaemum and Artemisia gmelini sediment organic matter

total nitrogen and total phosphorus showed an exponential function (R2≥0.78) and a downward trend with the increase in coverage

respectively. The nutrients amount in the sediment were significantly reduced by 69.9%~99.3%. (4) The total organic matter

total nitrogen and total phosphorus of runoff sediment in Bothriochloa ischaemum and Artemisia gmelini showed an exponential function (R2≥0.53) and a decreasing trend with the increase of vegetation coverage

respectively. When the vegetation coverage was ≥45%

the total organic matter

total nitrogen and total phosphorus in Bothriochloa ischaemum decreased by 33.7%~71.8%

50.1%~53.6% and 48.1%~64.3%

respectively

compared with Artemisia gmelini plots. (5) The enrichment ratios of soil organic matter

total nitrogen and total phosphorus of two typical vegetation decreased linearly with the increase of coverage (R2≥0.56). The migration of soil organic matter and total phosphorus of two typical vegetations occurred mainly in sediment

and the migration of soil total nitrogen occurred mainly in runoff. The research results provide a theoretical reference for the effect of vegetation coverage on the nutrients migration mechanism of slopes.

关键词

Keywords

references

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.

王全九,张江辉,丁新利,等.黄土区土壤溶质径流迁移过程影响因素浅析[J].西北水资源与水工程,1999,10(1):3-5.

Owino J O, Owido S F O, Chemelil M C. Nutrients in runoff from a clay loam soil protected by narrow grass strips[J].Soil and Tillage Research,2006,88(1/2):116-122.

朱显谟.黄土地区植被因素对于水土流失的影响[J].土壤学报,1960(2):110-121.

张光辉,梁一民.植被盖度对水土保持功效影响的研究综述[J].水土保持研究,1996,3(2):104-110.

张兴昌,邵明安.植被覆盖度对流域有机质和氮素径流流失的影响[J].草地学报,2000,8(3):198-203.

Gao C N, Cheng J H, Li F. Experimental study of herbaceous structure effects on reducing nutrient loss[J].Polish Journal of Environmental Studies,2018,28(3):1675-1685.

戴矜君,程金花,张洪江,等.草被覆盖对养分迁移机制的影响[J].水土保持学报,2016,30(3):147-153.

李婧,李占斌,李鹏,等.模拟降雨条件下植被格局对径流总磷流失特征的影响分析[J].水土保持学报,2010,24(4):27-30.

王升,王全九,董文财,等.黄土坡面不同植被覆盖度下产流产沙与养分流失规律[J].水土保持学报,2012,26(4):23-27.

王忠禹,王兵,刘国彬,等.黄土丘陵区典型植被枯落物坡面分布及混入土壤对土壤性状的影响[J].自然资源学报,2018,33(11):2020-2031.

朱丽,郭继勋,鲁萍,等.松嫩羊草草甸羊草、碱茅群落土壤酶活性比较研究[J].草业学报,2002,11(4):28-34.

张婷,陈云明,武春华.黄土丘陵区铁杆蒿群落和长芒草群落地上生物量及土壤养分效应[J].中国水土保持科学,2011,9(5):91-97.

赵富王,王宁,苏雪萌,等.黄土丘陵区主要植物根系对土壤有机质和团聚体的影响[J].水土保持学报,2019,33(5):105-113.

王辉,王全九,邵明安.人工降雨条件下黄土坡面养分随径流迁移试验[J].农业工程学报,2006,22(6):39-44.

朱冰冰,李占斌,李鹏,等.草本植被覆盖对坡面降雨径流侵蚀影响的试验研究[J].土壤学报,2010,47(3):401-407.

Mcisaac G F, Hirschi M C, Mitchell J K. Nitrogen and phosphorus in eroded sediment from corn and soybean tillage systems[J].Journal of Environmental Quality,1991,20(3):663-670.

张兴昌,邵明安.侵蚀泥沙、有机质和全氮富集规律研究[J].应用生态学报,2001,12(4):541-544.

Wang G, Li Z, Zhang J, et al. Loss rules of total nitrogen and total phosphorus in the soils of southwest sountains in Henan Province, China under artificial rainfall[J].Applied Ecology and Environmental Research,2019,17(1):451-461.

李裕元,邵明安,郑纪勇,等.黄绵土坡耕地磷素迁移与土壤退化研究[J].水土保持学报,2003,17(4):1-7.

米佳,董宽虎.白羊草种群生殖分蘖株数量特征分析[J].草地学报,2007,15(1):55-59.

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