Study on the Relationships Between Soil Aggregate and Water Dynamics Under Three Vegetation Cover

XU Cheng; GU Feng; WANG Yao; HE Yangbo; CHEN Jiazhou

doi:10.13870/j.cnki.stbcxb.2019.01.012

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Study on the Relationships Between Soil Aggregate and Water Dynamics Under Three Vegetation Cover

更新时间：2025-03-12

- Study on the Relationships Between Soil Aggregate and Water Dynamics Under Three Vegetation Cover
- Vol. 33, Issue 1, Pages: 68-74(2019)
- 作者机构：
  
  华中农业大学, 农业部长江中下游耕地保育重点实验室,武汉,430070
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.01.012
  CLC： S157.1
- Published：2019
- 稿件说明：
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XU Cheng, GU Feng, WANG Yao, et al. Study on the Relationships Between Soil Aggregate and Water Dynamics Under Three Vegetation Cover[J]. 2019, 33(1): 68-74.
DOI：

XU Cheng, GU Feng, WANG Yao, et al. Study on the Relationships Between Soil Aggregate and Water Dynamics Under Three Vegetation Cover[J]. 2019, 33(1): 68-74. DOI： 10.13870/j.cnki.stbcxb.2019.01.012.

摘要

为了探究不同植被覆盖下的土壤水分动态变化和团聚体稳定性的关系，选取桂花地、油菜地、杉树地3种植被下的土壤为研究对象，就团聚体和土壤水分之间的年变化关系、短期变化关系（在短期降雨前后）进行了研究。结果表明：在1年时间内、3种植被下的土壤中，杉树地土壤团聚体稳定性显著高于桂花地和油菜地，并以0.25~2 mm的水稳团聚体为主。土壤团聚体稳定性的年变化趋势和土壤水分呈显著负相关关系，在土壤水分含量降低的时候团聚体稳定性升高。在桂花地、油菜地中，土壤水分和<0.25 mm粒级团聚体呈显著正相关关系，和>0.25 mm粒级团聚体呈负相关趋势，表明水分会促进大团聚体破碎分解成微团聚体，从而改变团聚体稳定性。同时，在短期时间内，土壤团聚体平均重量直径（MWD）随着降雨的开始呈现下降趋势，随着降雨的停止，团聚体MWD会逐渐回升。这种变化与降雨以及降雨引起的土壤水分的迅速变化有关。综合长期和短期时间变化，种植杉树林可以有效调控土壤水分变化幅度，提高团聚体稳定性，对预防水土流失具有重要作用。

Abstract

In order to explore the relationships between soil water dynamics and aggregate stability under different vegetation cover

the soil under the three vegetation types of osmanthus field

rapeseed field and fir field was selected as the research objects. The relationships between soil aggregate and soil water content in the long-term

short-term (before and after short-term rainfall) were investigated. The results showed that in the relatively long-term (one year)

the aggregate stability under the fir trees field was significantly higher than those of the osmanthus and rapeseed fields. The water stable aggregate was dominated by 0.25~2 mm. The one-year aggregate variation was significantly negatively correlated with soil water content

which meant the aggregate stability increased with decreasing soil water content. For example

in osmanthus field and rapeseed field

soil water were positively correlated with the portion of aggregate (< 0.25 mm)

but negatively correlated with the portion of aggregate (> 0.25 mm). This indicated that the soil water content could promote the large aggregates into microaggregates

and therefore

the stability of aggregate changed. In the short term

the soil aggregate mean weight diameter (MWD) changed in response to the soil water content.Specifically

soil aggregate MWD showed a downward trend with the beginning of rainfall

then reached a minimum value

after that

the aggregate MWD rose gradually when the rainfall stopped. The pattern of aggregate MWD was related with the rapid changes in soil water caused by rainfall and rainfall mechanical effect. Therefore

in combination with long-term and short-term changes of aggregate

fir trees in red soils can effectively regulate the dynamics of soil water variation

and improve the stability of aggregates

then play important role in preventing soil water erosion.

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references

左继超,胡建民,王凌云,等.侵蚀程度对红壤团聚体分布及养分含量的影响[J].水土保持通报,2017,37(1):112-117.

钱婧,张丽萍,王文艳.红壤坡面土壤团聚体特性与侵蚀泥沙的相关性[J].生态学报,2018,38(5):1590-1599.

Larionov G A, Bushueva O G, Dobrovol S N G, et al. Destruction of soil aggregates in slope flows[J]. Eurasian Soil Science, 2007, 40(10):1128-1134.

杨如萍,郭贤仕,吕军峰,等.不同耕作和种植模式对土壤团聚体分布及稳定性的影响[J].水土保持学报,2010,24(1):252-256.

刘雷,安韶山,黄华伟.应用Le Bissonnais法研究黄土丘陵区植被类型对土壤团聚体稳定性的影响[J].生态学报,2013,33(20):6670-6680.

刘晓利,何园球,李成亮,等.不同利用方式和肥力红壤中水稳性团聚体分布及物理性质特征[J].土壤学报,2008,45(3):459-465.

徐爽.化学物质对土壤团聚体稳定性及其他物理性状的影响[D].陕西杨凌:西北农林科技大学,2015.

Dimoyiannis D. Seasonal soil aggregate stability variation in relation to rainfall and temperature under Mediterranean conditions[J]. Earth Surface Processes & Landforms, 2010, 34(6):860-866.

Algayer B, Bissonnais Y L, Darboux F. Short-term dynamics of soil aggregate stability in the field[J]. Soil Science Society of America Journal, 2014,78(4):1168-1176.

Bissonnais Y L. Aggregate stability and assessment of soil crustability and erodibility:I. Theory and methodology[J]. European Journal of Soil Science, 2016, 67(1):11-21.

宋婧.红壤坡地不同植被类型的干湿季土壤水分动态规律研究[D].武汉:华中农业大学,2017.

周虎,吕贻忠,杨志臣,等.保护性耕作对华北平原土壤团聚体特征的影响[J].中国农业科学,2007,40(9):1973-1979.

马仁明,蔡崇法,李朝霞,等.前期土壤含水率对红壤团聚体稳定性及溅蚀的影响[J].农业工程学报,2014,30(3):95-103.

Ramos M C, Nacci S, Pla I. Effect of raindrop impact and its relationship with aggregate stability to different disaggregation forces[J]. Catena, 2003, 53:365-376.

Roth C H, Eggert T. Mechanisms of aggregate breakdown involved in surface sealing, runoff generation and sediment concentration on loess soils[J]. Soil & Tillage Research, 1994, 32(2/3):253-268.

Zheng F L. Runoff, soil erosion, and erodibility of conservation reserve program land under crop and hay production[J]. Soil Science Society of America Journal, 2004, 68(4):1332-1341.

史志华,闫峰陵,李朝霞,等.红壤表土团聚体破碎方式对坡面产流过程的影响[J].自然科学进展,2007,17(2):217-224.

Marchuk A, Rengasamy P, Mcneill A. Influence of organic matter, clay mineralogy, and pH on the effects of CROSS on soil structure is related to the zeta potential of the dispersed clay[J]. Soil Research, 2013, 51(1):34-40.

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