Effects of Different Hedgerow Patterns on the Soil Physicochemical Properties, Erodibility, and Fractal Characteristics of Slope Farmland in the Miyun Reservoir Area
文献类型: 外文期刊
作者: Wang, Lei 1 ; Wu, Jiajun 1 ; Xie, Jianzhi 1 ; Wei, Dan 2 ; Li, Yan 2 ; Wang, Junqiang 3 ; Xu, Ting 3 ; Yang, Zhixin 1 ; Jin, Liang 2 ;
作者机构: 1.Agr Univ Hebei, Coll Resources & Environm Sci, Baoding 071000, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing 100097, Peoples R China
3.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar 161000, Peoples R China
关键词: Miyun reservoir area; hedgerow; soil erodibility; soil physicochemical properties; fractal characteristics
期刊名称:PLANTS-BASEL ( 影响因子:4.658; 五年影响因子:4.827 )
ISSN:
年卷期: 2022 年 11 卷 19 期
页码:
收录情况: SCI
摘要: Soil erosion of sloping farmland in the Miyun reservoir area in Beijing has become a serious issue and has threatened the ecological environment and safety of the reservoir area. We used the Taishizhuang Village Non-point Source Pollution Prevention & Control Base in the Miyun reservoir as a study area and performed a comparative analysis of the physicochemical properties of soil of the upper, middle, and lower slopes of the Scutellaria baicalensis + Buchloe dactyloides plot (Treatment 1, T1), Morus alba + Buchloe dactyloides plot (Treatment 2, T2), Salvia miltiorrhiza + Cynodon dactylon plot (Treatment 3, T3), Platycodon grandiflorus + Cynodon dactylon plot (T4), and a barren land control plot (Control check, CK), to explore how different hedgerow patterns affect the soil's physicochemical properties, anti-erodibility, and fractal characteristics. We found the following: (1) The primary soil mechanical composition included sand particles in the upper slopes, whereas it was soil fine particles in the middle and lower slopes. (2) The fractal dimension of the slope soil showed a significant negative correlation with sand particles (R-2 = 0.9791) while being positively correlated with silt particles (R-2 = 0.9635) and clay particles (R-2 = 0.9408). (3) All hedgerow patterns increased soil nutrients, with the Morus alba + Buchloe dactyloides hedgerow plot increasing the soil total nitrogen (STN), soil total phosphorus (STP), and soil organic matter (SOM) content by 213.89-282.69%, 55.56-58.15%, and 29.77-56.04%, respectively. (4) The Morus alba + Buchloe dactyloides hedgerow plot significantly decreased the soil erodibility factor K value, improved soil anti-erodibility, and reduced soil erosion. (5) The K value of the soil erodibility was significantly negatively correlated with clay particles, soil fractal dimension, and STP (p < 0.01); positively correlated with sand particles; and negatively correlated with silt particles, STN, and SOM. Therefore, the Morus alba + Buchloe dactyloides hedgerow planting contributes to clay particle conservation, soil nutrient content improvement, soil structure optimization, and soil anti-erodibility enhancement.
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