重庆城郊紫色土小流域草地入渗特征

doi:10.13292/j.1000-4890.202408.007

生态学杂志 ›› 2024, Vol. 43 ›› Issue (8): 2345-2353.doi: 10.13292/j.1000-4890.202408.007

• 城市环境与生态服务专栏 • 上一篇下一篇

重庆城郊紫色土小流域草地入渗特征

刘春红^1,2,3,韦杰^1,2,3*,肖晰文^1,2,苟俊菲^1,2,甘凤玲^1,2,3,唐瑶^1,2,薄纯悦^1,2

（¹ 重庆师范大学地理与旅游学院，重庆 401331； ²重庆师范大学三峡库区地表过程与生态修复重庆市重点实验室，重庆 401331； ³三峡库区地表生态过程重庆市野外科学观测研究站，重庆 401331）

出版日期:2024-08-10 发布日期:2024-08-14

Infiltration characteristics of grassland in small watershed of purple soil in suburban Chongqing.

LIU Chunhong^1,2,3, WEI Jie^1,2,3*, XIAO Xiwen^1,2, GOU Junfei^1,2, GAN Fengling^1,2,3, TANG Yao^1,2, BO Chunyue^1,2

(¹College of Geography and Tourism Science, Chongqing Normal University, Chongqing 401331, China; ²Chongqing Key Laboratory of Surface Process and Ecological Restoration in the Three Gorges Reservoir Area, Chongqing Normal University, Chongqing 401331, China; ³Chongqing Field Observation and Research Station of Surface Ecological Process in the Three Gorges Reservoir Area, Chongqing 401331, China).

Online:2024-08-10 Published:2024-08-14

摘要/Abstract

摘要： 为揭示植物根系对紫色土小流域草地渗透性能的影响，本研究选取重庆城郊紫色土小流域4种常见草本植物（窃衣、黄鹌菜、黑麦草和蒲儿根）的根土复合体为研究对象，以无根土为对照，采用单株植物根系进行一维入渗实验，探讨植物根系结构特征与根土复合体渗透性能的关系，并采用入渗模型进行模拟。结果表明：根土复合体和无根土入渗均呈现先陡降后趋于稳定的趋势；与无根土相比，根土复合体稳定入渗率可提高1.35～2.96倍，且须根系根土复合体入渗率均高于直根系，其中蒲儿根提高土壤入渗性能更好；根长密度、根表面积密度、根体积分形维数与根土复合体的初始入渗率、稳定入渗率、平均入渗率、累积入渗量均呈极显著正相关(P<0.01)，而根体积密度与土壤初始入渗率、根重密度与稳定入渗率相关性不显著(P>0.05)；Mezencev模型最适合表征4种草本植物根土复合体和无根土入渗(R²均为0.99)，其后依次是Kostiakov模型、Horton模型和Philip模型；直根系根土复合体对Kostiakov、Philip和Horton等3种模型的适用性优于须根系根土复合体。研究结果可从植物根系角度为紫色土区防治水土流失提供理论依据。

关键词: 重庆城郊, 紫色土, 小流域, 草地, 壤质土, 土壤入渗

Abstract: To understand the effects of root system on the infiltration capacity of grasslands in a purple soil watershed, we conducted a one-dimensional infiltration experiment with four common herbaceous plants (Torilis scabra, Youngia japonica, Lolium multiflorum, and Sinosenecio oldhamianus) in suburb Chongqing. The relationship between the characteristics of plant root structure and the infiltration capacity of root soil complex was examined, and the Kostiakov, Mezencev, Horton, and Phillip infiltration models were used to simulate the infiltration process. The results showed that the infiltration processes of root soil complex and rootless soil decreased sharply at first and then decreased slowly until stable. The stable infiltration rate of root soil complex increased by 1.35-2.96 times compared with that of rootless soil. The infiltration rate of fibrous root soil complex was higher than that of taproot soil complex. Sinosenecio oldhamianus performed better in improving the infiltration performance of purple soil. Root length density, root surface area density, and root volume fractal dimension were significantly positively correlated with the initial, stable, average, and cumulative infiltration rates of the root soil complex (P<0.01). However, there was no significant correlation (P>0.05) between root volume density and soil initial infiltration rate, root weight density and stable infiltration rate. The Mezencev model was the most suitable to characterize the infiltration of root soil complex of the four herbaceous species and rootless soil (R²=0.99), followed by Kostiakov model, Horton model, and Philip model. Moreover, the Kostiakov, Philip, and Horton models performed better in simulating the infiltration of taproot soil complex than that of fibrous root soil complex. The results can provide a scientific basis for slope vegetation construction and soil erosion prevention in purple soil areas.

Key words: suburban Chongqing, purple soil, small watershed, grassland, loamy soil, soil infiltration

刘春红, 韦杰, 肖晰文, 苟俊菲, 甘凤玲, 唐瑶, 薄纯悦. 重庆城郊紫色土小流域草地入渗特征[J]. 生态学杂志, 2024, 43(8): 2345-2353.

LIU Chunhong, WEI Jie, XIAO Xiwen, GOU Junfei, GAN Fengling, TANG Yao, BO Chunyue. Infiltration characteristics of grassland in small watershed of purple soil in suburban Chongqing.[J]. Chinese Journal of Ecology, 2024, 43(8): 2345-2353.

[1]	刘德泽, 王盎, 王莹莹, 杨秀森, 宿晨霞, 宋琳琳, 段伊行, 于浩明, 刘东, 赵鹏武, 李英华, 方运霆. 典型草地土壤反硝化过程同位素分馏效应 [J]. 生态学杂志, 2024, 43(9): 2714-2728.
[2]	杨永强, 张青青, 徐海量, 林涛, 管廷贤, 刘兴义. 天山西段北麓主要草地类型的地上生物量时空分布格局 [J]. 生态学杂志, 2024, 43(7): 2075-2082.
[3]	吕汪汪, 孙建平, 吕静雅, 陈兰英, 刘世章, 伍晶, 汪诗平. 气候变暖对寒区草地土壤有机碳库的影响及其机制研究进展 [J]. 生态学杂志, 2024, 43(6): 1604-1611.
[4]	其曼古丽·帕拉提, 刘丹, 毛军, 乔福生, 王长庭. 不同退化程度高寒草地土壤碳氮磷含量及生态化学计量特征 [J]. 生态学杂志, 2024, 43(6): 1612-1620.
[5]	童永尚, 张春平, 董全民, 于泽航, 杨增增, 张小芳, 曹铨, 俞旸, 张正社. 氮素形态对高寒人工草地植物群落生物量分配及优势种叶片光合特性的影响 [J]. 生态学杂志, 2024, 43(6): 1655-1663.
[6]	李婧, 张法伟, 曹广民, 郭小伟. 基于氢氧稳定同位素技术的青藏高原典型小流域水分交换 [J]. 生态学杂志, 2024, 43(6): 1772-1778.
[7]	左启林, 于洋, 查同刚. 晋西黄土小流域土壤有机碳空间分布特征及其影响因素 [J]. 生态学杂志, 2024, 43(5): 1373-1380.
[8]	孙建平, 吕汪汪, 李博文, 刘世章, 伍晶, 汪诗平. 气候变化对草地植物物候影响的研究进展 [J]. 生态学杂志, 2024, 43(3): 888-894.
[9]	李晓燕, 李永慧, 秦文萍, 孙羽, 马志雯, 刘翔. 人工草地建植对三江源区退化高寒草甸土壤有机碳组分的影响 [J]. 生态学杂志, 2024, 43(1): 50-56.
[10]	刘玉祯, 刘文亭, 杨晓霞, 冯斌, 孙彩彩, 李彩弟, 赵新全, 董全民. 放牧家畜组合对高寒草地植物群落特征及生产力的影响 [J]. 生态学杂志, 2024, 43(1): 57-65.
[11]	格日乐其木格, 乌兰图雅, 斯琴朝克图, 包木苏. 内蒙古草地质量对牧户生计脆弱性的影响评价 [J]. 生态学杂志, 2024, 43(1): 216-223.
[12]	王纯枝, 郭安红, 张蕾, 邓环环, 刘杰, 曾娟, 何亮. 草地贪夜蛾发生潜势的气象适宜度等级预报 [J]. 生态学杂志, 2023, 42(7): 1783-1792.
[13]	田悦, 刘艳. 西藏高寒草原苔藓植物群丛特征及其与生态因子的关系 [J]. 生态学杂志, 2023, 42(5): 1035-1042.
[14]	韩丽, 李立军, 张艳丽, 赵鑫瑶, 杨金虎, 李志伟. 内蒙古农牧交错带土壤细菌多样性特征 [J]. 生态学杂志, 2023, 42(4): 862-868.
[15]	周天祺, 孔维栋, 陈昊. 青藏高原草地土壤微生物研究进展 [J]. 生态学杂志, 2023, 42(4): 983-990.

重庆城郊紫色土小流域草地入渗特征

Infiltration characteristics of grassland in small watershed of purple soil in suburban Chongqing.

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价