WANG Yueyue,WU Yuanzhi,FAN Wenhua,et al.Characteristics of Soil Aggregates in Cultivated Layer of Yimeng Mountain Area Under Different Rainfall Conditions[J].Research of Soil and Water Conservation,2022,29(01):92-99.
不同降雨条件下沂蒙山区耕层土壤团聚体特征
- Title:
- Characteristics of Soil Aggregates in Cultivated Layer of Yimeng Mountain Area Under Different Rainfall Conditions
- 文章编号:
- 1005-3409(2022)01-0092-08
- Keywords:
- Yimeng Mountain area; cultivated layer soil; rainfall duration; rainfall intensity; soil aggregate
- 分类号:
- S152.4
- 文献标志码:
- A
- 摘要:
- 降雨强度和时长对土壤团聚体的影响至关重要,不同降雨特征下沂蒙山区耕层土壤团聚体时空变异特征仍不清晰。基于模拟降雨试验,研究了不同降雨强度(16 mm/h,43 mm/h,71 mm/h)和降雨时长(10 min,30 min,60 min)下沂蒙山区褐土耕层土壤团聚体特征。结果表明:降雨强度16 mm/h,10 min降雨时长下仅对0—5 cm土层土壤团聚体产生影响,>5 mm粒级团聚体含量迅速降低。其他雨强和时长下,0—5,5—10,10—20 cm土层团聚体含量均发生变化。在43,71 mm/h的降雨强度下,随着降雨时长的增加,0—5 cm土层微团聚体含量均表现出先增加后降低的趋势。与供试土壤相比,雨强为71 mm/h,降雨时长60 min时,0—5 cm土层>5 mm粒级团聚体含量减少了93%,而<0.25 mm粒级团聚体含量增加了42%。土壤团聚体的平均重量直径(MWD)随降雨强度及时长的增加而减小,在降雨强度71 mm/h,降雨时长60 min时各土层MWD趋于一致。说明,随降雨强度及时长的增加,雨滴打击和雨水湿润作用对土壤大团聚体的拆分作用增强,大团聚体含量逐渐减少,微团聚体含量逐渐增加,土壤稳定性先降低后趋于稳定。
- Abstract:
- Rainfall intensity and rainfall duration are important factors affecting soil aggregates. However, less information is available for the effect of rainfall intensity and duration on soil aggregates characteristics in cultivated layer of Yimeng Mountain area. Soil aggregates in a cultivated layer in the Yimeng Mountain area were studied before and after various intensities(16 mm/h, 43 mm/h, 71 mm/h)and durations(10 min, 30 min, 60 min)of artificially simulated rainfall. The results showed that the rainfall with intensity of 16 mm/h and duration of 10 min caused a rapid decrease of the >5 mm aggregate content in the 0—5 cm soil layer; rainfall with intensities of 43 and 71 mm/h caused the microaggregate content of the 0—5 cm soil layer to initially increase and then to decrease; compared to the original soil condition, the >5 mm aggregate content decreased by 93% in the 0—5 cm soil layer, and the <0.25 mm aggregate content increased by 42% under the rainfall intensity of 71 mm/h for a duration of 60 min; the mean weight diameter(MWD)of soil aggregates declined as rainfall intensity and duration increased, and the MWD values of three soil layers(0—5 cm, 5—10 cm and 10—20 cm)tended to be similar under the rainfall intensity of 71 mm/h for 60 min. The above results indicate that the decomposition of soil macroaggregates was enhanced with the increase of rainfall intensity and rainfall duration, leading to gradual decrease in macroaggregate content and gradual increase in microaggregate content, and the soil stability first decreased and then tended to be stable.
参考文献/References:
[1] 张猛.干湿交替过程中土壤容重,水分特征曲线和热特性的动态变化特征[D].北京:中国农业大学,2017.[2] 杨成松,何平,程国栋,等.冻融作用对土体干容重和含水量影响的试验研究[J].岩石力学与工程学报,2003,22(Z2):2695-2699.[3] Bodner G, Scholl P, Loiskandl W, et al. Environmental and management influences on temporal variability of near saturated soil hydraulic properties[J]. Geoderma, 2013,204-205(100):120-129.[4] Dexter A R. Internal structure of tilled soil[J]. Journal of Soil Science, 1976,27(3):267-278.[5] Ojeniyi S O, Dexter A R. Changes in the structure of differently tilled soil in a growing season[J]. Soil and Tillage Research, 1983,3(1):39-46.[6] 杨晓娟,李春俭.机械压实对土壤质量、作物生长、土壤生物及环境的影响[J].中国农业科学,2008,41(7):2008-2015.[7] 吴永波,刘爽.土壤压实对土壤性质及植物生长的影响[J].林业科技开发,2010,24(1):15-17.[8] 卢嘉,郑粉莉,安娟,等.东北黑土区土壤团聚体迁移特征的模拟降雨试验研究[J].水土保持通报,2012,32(6):6-10.[9] 闫峰陵,史志华,蔡崇法,等.红壤表土团聚体稳定性对坡面侵蚀的影响[J].土壤学报,2007,44(4):577-583.[10] 史奕,陈欣,闻大中.东北黑土团聚体水稳性研究进展[J].中国生态农业学报,2005,13(4):95-98.[11] 吴新亮.几种典型地带性土壤团聚体稳定机制及坡面侵蚀响应[D].武汉:华中农业大学,2017.[12] 张光远,蔡崇法.黄绵土表层结皮的微形态特征及某些理化性质的研究[M]∥晋西黄土高原土壤侵蚀规律试验研究文集.北京:水利电力出版社,1990.[13] 蔡强国,王贵平,陈永宗.黄土高原小流域侵蚀产沙过程与模拟[M].北京:科学出版社,1998.[14] 温磊磊,郑粉莉,沈海鸥,等.东北典型黑土区农耕土壤团聚体流失特征[J].土壤学报,2015,52(3):489-498.[15] 刘林林,王孝哲,郭祥胜,等.不同降雨强度条件下黄土边坡稳定性分析[J].人民珠江,2019,40(7):37-41,47.[16] Martinez-Mena M, Castillo V, Albaladejo J. Relations between interrill erosion processes and sediment particle size distribution in a semiarid Mediterranean area of SE of Spain[J]. Geomorphology, 2002,45(3):261-275.[17] 李朝霞.降雨过程中红壤表土结构变化与侵蚀特点[D].武汉:华中农业大学,2005.[18] 安娟,卢嘉,郑粉莉,等.不同地表条件下黑土区坡耕地侵蚀过程中土壤团聚体迁移[J].水土保持学报,2011,25(6):100-104.[19] 申艳,张晓平,梁爱珍,等.黑土坡耕地土壤流失形态分析:以一次降雨为例[J].干旱地区农业研究,2008,26(6):224-229.[20] 刘娇.降雨侵蚀对土壤团聚体稳定性及碳氮矿化的影响[D].陕西杨凌:西北农林科技大学,2018.[21] Or D, Leij F J, Snyder V, et al. Stochastic model for post-tillage soil pore space evolution[J]. Water Resource Research, 2000,36(7):1641-1652.[22] Assouline S. Modeling the relationship between soil bulk density and the water retention curve[J]. Vadose Zone Journal, 2006,5(2):554-563.[23] Liu X, Lu S, Horton R, et al. In situ monitoring of soil bulk density with a thermo‐TDR sensor[J]. Soil Science Society of America Journal, 2014,78(2):400-407.[24] 石璞, Chiahue D Y,赵鹏志.间歇性降雨对土壤团聚体粒级及磷、铜、锌富集的影响[J].土壤学报,2021,58(4):948-956.[25] 高学田,包忠谟.降雨特性和土壤结构对溅蚀的影响[J].水土保持学报,2001,15(3):24-26,47.[26] 陈晓燕,牛青霞,周继,等.人工模拟降雨条件下紫色土陡坡地土壤颗粒分布空间变异特征[J].水土保持学报,2010,24(5):163-168.[27] 周一杨,王恩姮,陈祥伟.模拟降雨条件下黑土溅蚀与团聚体分选特征[J].水土保持学报,2008,22(6):176-179.[28] Legout C, Leguedois S, Le Bissonnais Y. Aggregate breakdown dynamics under rainfall compared with aggregate stability measurements[J]. European Journal of Soil Science, 2005,56(2):225-238.[29] Shi P, Thorlacius S, Keller T, et al. Soil aggregate breakdown in a field experiment with different rainfall intensities and initial soil water contents[J]. European Journal of Soil Science, 2017,68(6):853-863.[30] 安娟,王富,吴元芝,等.北方土石山区土地利用方式对褐土团聚体稳定性的影响[J].水土保持研究,2020,27(5):10-16.
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备注/Memo
收稿日期:2020-12-22 修回日期:2021-01-30资助项目:临沂大学校科研资助项目(40618108); 国家自然科学基金项目(40907006)第一作者:王月月(1989—),女,山东省德州市人,博士研究生,副教授,主要从事水土资源保护利用研究。E-mail:beijingwoaini1015@163.com