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学者姓名：蒋芳市
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Abstract ：
Soil phosphorus plays an important role in the soil ecological environment and sustainable development of the fruit industry in the soil hilly region of southern China, but the impact of different mulching measures on soil available phosphorus and phosphorus fractions in orchards remains unclear. In this study, soil basic physicochemical properties, available phosphorus, inorganic phosphorus fractions and their interrelationships under natural grass cover (NG), film mulch (FM) and clean tillage (CK) in orchards were explored. Compared to CK treatment, both FM and NG treatments have been shown to increase the contents of soil organic carbon (SOC), total nitrogen (TN), and available nitrogen (AN). Additionally, compared with the FM treatment, the NG treatment increased total phosphorus (TP), total potassium (TK), available potassium (AK), and soil acid phosphatase (S-ACP), resulting in greater improvements in soil fertility. The NG treatment increased the contents of aluminium-bound phosphate (Al-P) and iron-bound phosphate (Fe-P) in the 0-40 cm soil layer, whereas the FM treatment decreased the contents of Fe-P and Al-P and increased the content of occluded phosphate (O-P). Compared with the CK treatment, the NG treatment significantly increased the available phosphorus in the 0-40 cm soil layer, whereas the FM treatment significantly decreased it. Redundancy analysis revealed that pH and S-ACP were the main factors affecting soil phosphorus components. Al-P, Fe-P, and S-ACP were the three factors with the highest correlations with available phosphorus. However, according to multiple stepwise analyses, only Al-P was directly related to available phosphorus. Overall, in the southeast hilly orchards, the NG treatment improved soil nutrient and enzyme activity and is considered an effective strategy to increase the biological effectiveness of phosphorus while reducing leaching losses.
Keyword ：
availability availability bray1-P bray1-P citrus citrus macronutrient macronutrient multiple stepwise regression analysis multiple stepwise regression analysis soil quality soil quality
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| GB/T 7714 | Zhou, Bangning , Li, Heming , Zhuo, Zuopin et al. Effects of different mulching measures on soil physicochemical properties and phosphorus fractions in orchards in the southeast hilly region of China [J]. | PLANT SOIL AND ENVIRONMENT , 2025 , 71 (3) : 171-184 . |
| MLA | Zhou, Bangning et al. "Effects of different mulching measures on soil physicochemical properties and phosphorus fractions in orchards in the southeast hilly region of China" . | PLANT SOIL AND ENVIRONMENT 71 . 3 (2025) : 171-184 . |
| APA | Zhou, Bangning , Li, Heming , Zhuo, Zuopin , Wang, Lei , Yang, Maojin , Lin, Jinshi et al. Effects of different mulching measures on soil physicochemical properties and phosphorus fractions in orchards in the southeast hilly region of China . | PLANT SOIL AND ENVIRONMENT , 2025 , 71 (3) , 171-184 . |
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土壤学是高等农林院校农林相关专业的核心基础课，旨在通过系统的理论知识学习和实践技能训练，培养符合农林业发展需求和服务乡村振兴的高素质人才。新农科建设背景下，破解土壤学传统教学中存在的“六重六轻”痛点，强化思政融入和引领作用，推行科研反哺教学改革，探索“用爱教学、用情引领、用心垂范、用行指导、用智培优、用责笃行”的“六用”教学模式创新，构建“悯农学农”方能“知农爱农”才能“强农兴农”的“六农”人才培养路径，实现了“万物土中生、人才土中育”的新时代农林特色课程教育教学改革目标。
Keyword ：
农林专业 农林专业 土壤学 土壤学 教学改革 教学改革 新农科 新农科
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| GB/T 7714 | 郭九信 , 蒋芳市 , 张黎明 . “万物土中生、人才土中育”的土壤学课程教学改革探索与实践 [J]. | 高等农业教育 , 2025 , PageCount-页数: 9 (03) : 89-97 . |
| MLA | 郭九信 et al. "“万物土中生、人才土中育”的土壤学课程教学改革探索与实践" . | 高等农业教育 PageCount-页数: 9 . 03 (2025) : 89-97 . |
| APA | 郭九信 , 蒋芳市 , 张黎明 . “万物土中生、人才土中育”的土壤学课程教学改革探索与实践 . | 高等农业教育 , 2025 , PageCount-页数: 9 (03) , 89-97 . |
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Gravel coverage on slopes influences overland flow and soil erosion. However, the effect of different gravel sizes on the soil erosion process remains underexplored. In this study, a runoff scour test was performed to examine the effects of gravel coverage on the hydrodynamic characteristics of slope runoff and sediment transport capacity (Tc). The slope gradient varied from 18% to 84%, the unit flow discharge ranged from 0.27 x 10-3 to 1.11 x 10-3 m2 s-1, and gravel coverage was adjusted from 0% to 90%. The results reveal that water depth, shear stress, and stream power increased with gravel coverage. However, once coverage exceeded 20%, flow velocity and unit stream power decreased and stabilized. As gravel coverage increased, the hydraulic regimes transitioned from laminar to turbulent flow and shifted from supercritical to subcritical. Consequently, Tc first increased and then decreased with the increase in gravel coverage, reaching a peak at 20% coverage (1.66 kg m-1 s-1). Moreover, the degree of coverage indirectly influenced Tc through grain shear stress. The new equations, based on the Box-Lucas function, incorporated slope, grain shear stress, and flow velocity, thereby effectively simulating Tc for runoff on gravel-covered slopes (R2 = 0.94, NSE = 0.94). These findings provide a basis for modeling soil erosion on gravel-covered slopes.
Keyword ：
gravel coverage gravel coverage hydrodynamic characteristics hydrodynamic characteristics overland flow overland flow sediment transport capacity sediment transport capacity
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| GB/T 7714 | Shen, Haoming , Zhu, Zhehao , Chen, Yuyang et al. Influence of Gravel Coverage on Hydraulic Characteristics and Sediment Transport Capacity of Runoff on Steep Slopes [J]. | WATER , 2025 , 17 (3) . |
| MLA | Shen, Haoming et al. "Influence of Gravel Coverage on Hydraulic Characteristics and Sediment Transport Capacity of Runoff on Steep Slopes" . | WATER 17 . 3 (2025) . |
| APA | Shen, Haoming , Zhu, Zhehao , Chen, Yuyang , Wu, Wei , Sun, Shujun , Zhang, Yue et al. Influence of Gravel Coverage on Hydraulic Characteristics and Sediment Transport Capacity of Runoff on Steep Slopes . | WATER , 2025 , 17 (3) . |
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Plant roots improve the stability of collapsing walls and prevent their collapse; they are thus important for controlling the degree of Benggang erosion in southern China. The vegetation species on the collapsing walls are diverse, and the interaction of the root systems with soil affects the stability of the collapsing walls. Most recent studies have only examined the effects of single plants. In order to investigate the effects of the roots of different vegetation types on the shear strength of soil in collapsing walls and their interaction mechanisms of action, this study was conducted using the roots of the herb Dicranopteris dichotoma and the shrub Melastoma candidum. A direct shear test of indoor remodeled soil was carried out by varying water content (15%, 25%) and herb to shrub root ratio (100:0, 75:25, 50:50, 25:75, and 0:100). The results showed that the shear strength (96.09 kPa) and cohesion (49.26 kPa) of root-containing soil were significantly higher than plain soil (91.77 kPa, 42.17 kPa), and the highest values were obtained when herb to shrub root ratio was 100:0 (113.27 kPa, 62.85 kPa). Here, tensile tests and scanning electron microscopy revealed that the tensile force and tensile strength of the roots of Dicranopteris dichotoma were weaker but effective for maintaining soil stability because of their abundance roots, which could achieve a stronger bond to soil. Simultaneously, herbaceous roots have a small diameter, the Root Area Ratio (RAR) of the roots is larger under the same mass condition, which can better contact with soil and the mechanical properties of roots are fully utilized. Therefore, the soil shear strength is higher and can better resist external damage when herbaceous roots accounts for a larger proportion. The results of this research have implications for the selection and allocation of ecological measures for prevention and control of Benggang.
Keyword ：
Herb roots Herb roots Reinforced soil Reinforced soil Roots proportion Roots proportion Shrub roots Shrub roots Soil mechanics Soil mechanics Vegetation restoration Vegetation restoration
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| GB/T 7714 | Shuai, Fang , Wang, Hua , Ha, Fang et al. Impact of the root ratio of herbs and shrubs on the soil shear strength of collapsing walls in Benggang [J]. | JOURNAL OF MOUNTAIN SCIENCE , 2025 , 22 (4) : 1431-1445 . |
| MLA | Shuai, Fang et al. "Impact of the root ratio of herbs and shrubs on the soil shear strength of collapsing walls in Benggang" . | JOURNAL OF MOUNTAIN SCIENCE 22 . 4 (2025) : 1431-1445 . |
| APA | Shuai, Fang , Wang, Hua , Ha, Fang , Zhan, Yuanyuan , Shen, Haoming , Ma, Bo et al. Impact of the root ratio of herbs and shrubs on the soil shear strength of collapsing walls in Benggang . | JOURNAL OF MOUNTAIN SCIENCE , 2025 , 22 (4) , 1431-1445 . |
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Plant roots improve the stability of collapsing walls and prevent their collapse;they are thus important for controlling the degree of Benggang erosion in southern China.The vegetation species on the collapsing walls are diverse,and the interaction of the root systems with soil affects the stability of the collapsing walls.Most recent studies have only examined the effects of single plants.In order to investigate the effects of the roots of different vegetation types on the shear strength of soil in collapsing walls and their interaction mechanisms of action,this study was conducted using the roots of the herb Dicranopteris dichotoma and the shrub Melastoma candidum.A direct shear test of indoor remodeled soil was carried out by varying water content(15％,25％)and herb to shrub root ratio(100∶0,75∶25,50∶50,25∶75,and 0∶100).The results showed that the shear strength(96.09 kPa)and cohesion(49.26 kPa)of root-containing soil were significantly higher than plain soil(91.77 kPa,42.17 kPa),and the highest values were obtained when herb to shrub root ratio was 100∶0(113.27 kPa,62.85 kPa).Here,tensile tests and scanning electron microscopy revealed that the tensile force and tensile strength of the roots of Dicranopteris dichotoma were weaker but effective for maintaining soil stability because of their abundance roots,which could achieve a stronger bond to soil.Simultaneously,herbaceous roots have a small diameter,the Root Area Ratio(RAR)of the roots is larger under the same mass condition,which can better contact with soil and the mechanical properties of roots are fully utilized.Therefore,the soil shear strength is higher and can better resist external damage when herbaceous roots accounts for a larger proportion.The results of this research have implications for the selection and allocation of ecological measures for prevention and control of Benggang.
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| GB/T 7714 | SHUAI Fang , WANG Hua , HA Fang et al. Impact of the root ratio of herbs and shrubs on the soil shear strength of collapsing walls in Benggang [J]. | 山地科学学报（英文） , 2025 , 22 (4) : 1431-1445,中插18 . |
| MLA | SHUAI Fang et al. "Impact of the root ratio of herbs and shrubs on the soil shear strength of collapsing walls in Benggang" . | 山地科学学报（英文） 22 . 4 (2025) : 1431-1445,中插18 . |
| APA | SHUAI Fang , WANG Hua , HA Fang , ZHAN Yuanyuan , SHEN Haoming , MA Bo et al. Impact of the root ratio of herbs and shrubs on the soil shear strength of collapsing walls in Benggang . | 山地科学学报（英文） , 2025 , 22 (4) , 1431-1445,中插18 . |
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Shear strength is the key index to determine the stability of a soil slope, and cementation between iron oxide and clay minerals is one of the internal factors affecting soil shear strength; however, the effects of the form of iron oxide on the shear strength of granite-weathered red soil are still unclear. Kaolinite, which is the main clay mineral of granite red soil, was selected as the research object, and the effects of three different forms of iron oxide (hematite: HT, goethite: GT, and amorphous iron oxide: AIO) on the soil microstructure, microscopic quantitative parameters, cohesion, internal friction angle, and shear strength were analyzed by scanning electron microscopy, X-ray diffraction, and the shear strength test. The results revealed that the iron oxide promoted the cementation of soil particles, and the cementation characteristics differed with the different forms of iron oxide. Hematite mainly showed flocculent cementation, poor cementation, and simple soil microstructures. Goethite mainly exhibited acicular cementation and the best cementation effect. The degree of aggregation of the soil particles was increased by the coatings, thus forming larger aggregate particles. The cementation effect of amorphous iron oxide was between those of hematite and goethite but included both the flocculation cementation of hematite and acicular cementation of goethite. Amorphous iron oxide and goethite effectively increased the contact area and friction degree between soil particles, while hematite had the opposite effect. The addition of three kinds of ferric oxide reduced the fractal dimension of soil, increased the apparent porosity, and promoted the irregularity of particles to a certain extent, among which hematite had the most significant growth on the long and short axes of the particles. At a content of 10 g kg-1, the addition of AIO and GT increased the soil cohesion and internal friction angle, and therefore increased the soil shear strength, and it was mainly determined by the soil microstructure: the contact area, apparent porosity, and particle short axis. These results indicated that GT and AIO are the main cementing materials affecting soil mechanical properties, and the transformation of iron oxide should be paid attention to when predicting soil slope stability.
Keyword ：
amorphous iron oxide amorphous iron oxide cohesion cohesion goethite goethite hematite hematite internal friction angle internal friction angle
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| GB/T 7714 | Yan, Hualing , Cen, Nanbo , Zheng, Qinmin et al. Analysis of the Shear Strength of Iron Oxide-Kaolinite Cementing Materials in Granite Red Soil [J]. | MINERALS , 2025 , 15 (1) . |
| MLA | Yan, Hualing et al. "Analysis of the Shear Strength of Iron Oxide-Kaolinite Cementing Materials in Granite Red Soil" . | MINERALS 15 . 1 (2025) . |
| APA | Yan, Hualing , Cen, Nanbo , Zheng, Qinmin , Lin, Jinshi , Jiang, Fangshi , Huang, Yanhe et al. Analysis of the Shear Strength of Iron Oxide-Kaolinite Cementing Materials in Granite Red Soil . | MINERALS , 2025 , 15 (1) . |
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A Benggang is a typical soil erosion landform in the red-soil region of southern China. Its collapsing-wall stability is closely related to the soil shear performance, which can be mechanically reinforced by plant roots. Shrub-root reinforcement mechanisms and model optimization have not been studied systematically. This study considers Melastoma candidum, a dominant shrub species in southern Benggang areas. Using remolded soil direct shear tests, the effects of different moisture content levels and root diameter classes on the shear characteristics of root-soil composites are explored. A shear strength equation for root-soil composites, based on the Wu-Waldron model (WWM), was established, incorporating soil moisture content and root diameter (Equations (12) and (13)). The key findings are as follows: (1) Roots significantly enhance soil shear strength and cohesion. At 15% moisture content, 1.50-3.00-mm roots provide optimal shear strength improvement; at 25% moisture content, 0.00-1.50-mm roots perform best, but achieve maximum cohesion enhancement under both moisture conditions. (2) Increased moisture content significantly reduces root-soil composite shear strength and cohesion. (3) Root diameter variation minimally affects the soil internal friction angle, which decreases with increasing moisture content. (4) The WWM overestimated the measured shear strength by >= 5.60 times. Incorporating the moisture content and root diameter, the WWM correction coefficient was 0.02-0.18, and the newly established shear strength prediction equations based on the Mohr-Coulomb criterion and the WWM model demonstrated significantly improved accuracy (R2, Nash-Sutcliffe efficiency [NSE] >= 0.92). These findings elucidate shrub-root regulatory mechanisms on collapsing-wall stability and provide theoretical support for vegetation allocation strategies and soil-reinforcement model optimization in red-soil erosion areas.
Keyword ：
model correction model correction root diameter root diameter root reinforcement root reinforcement soil erosion soil erosion soil mechanics soil mechanics vegetation restoration vegetation restoration
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| GB/T 7714 | Shuai, Fang , Wu, Wei , Meng, Ying et al. Effect of shrub root diameter classes on shear strength of soil in Benggang collapsing walls [J]. | EARTH SURFACE PROCESSES AND LANDFORMS , 2025 , 50 (9) . |
| MLA | Shuai, Fang et al. "Effect of shrub root diameter classes on shear strength of soil in Benggang collapsing walls" . | EARTH SURFACE PROCESSES AND LANDFORMS 50 . 9 (2025) . |
| APA | Shuai, Fang , Wu, Wei , Meng, Ying , Zhou, Yiyang , Chen, Yuyang , Zhang, Yue et al. Effect of shrub root diameter classes on shear strength of soil in Benggang collapsing walls . | EARTH SURFACE PROCESSES AND LANDFORMS , 2025 , 50 (9) . |
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降雨会改变崩壁土壤中水分的运移进而影响土壤颗粒表面的离子界面反应，同时大量雨水积累对下覆土层产生的极高渗透压力会导致土壤侵蚀。本研究以安溪县典型崩岗的崩壁红土层为研究对象，利用不同价态和浓度的离子溶液来调控土壤颗粒表面的离子界面反应，分析其对崩壁红土层渗压特性的影响。结果表明：离子界面反应下土壤的渗压过程受土壤中离子价态和浓度的影响主要体现在其改变土壤内力进而影响土壤孔隙状况。K
Keyword ：
土壤内力 土壤内力 土壤结构 土壤结构 崩岗 崩岗 渗压 渗压 离子界面反应 离子界面反应
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| GB/T 7714 | 吴云博 , 章智 , 李晓非 et al. 离子界面反应对安溪县典型花岗岩崩岗砂壤红土层渗压特性的影响 [J]. | 土壤学报 , 2025 , 62 (02) : 411-421 . |
| MLA | 吴云博 et al. "离子界面反应对安溪县典型花岗岩崩岗砂壤红土层渗压特性的影响" . | 土壤学报 62 . 02 (2025) : 411-421 . |
| APA | 吴云博 , 章智 , 李晓非 , 毛晓花 , 张越 , 蒋芳市 et al. 离子界面反应对安溪县典型花岗岩崩岗砂壤红土层渗压特性的影响 . | 土壤学报 , 2025 , 62 (02) , 411-421 . |
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Cracks at the slope crest of collapsing gully erosion areas significantly influence soil hydrological processes and mechanical properties; however, the response mechanism between crack development and gully wall destabilization under rainfall conditions remains unclear. In this study, typical collapsing gully walls with and without cracks in the red soil hilly region of China were selected as the research objects. The effects of short-duration rainstorms, long-duration light rainfall and crack conditions on soil hydrology and slope stability were quantitatively analysed. The results showed that the annual average soil moisture of soils with cracks in collapsing gully walls was significantly lower than that of soils without cracks. Under long-duration light rainfall, collapsing gully walls exhibited significantly higher increases and faster growth rates of soil moisture than under short-duration rainstorms. Across both rainfall scenarios, the soil with cracks in collapsing gully walls consistently showed greater increases and faster growth rates compared to that shown by soils without cracks. The safety factor was consistently lower for collapsing gully walls with cracks than for those without cracks and lower under shortduration rainstorms than under long-duration light rainfall. Compared with soils without cracks at the slope crest, the minimum safety factor of soils with cracks decreased by 29.4% and 39.0% under short-duration rainstorms and long-duration light rainfall, respectively. These results demonstrated that the presence of cracks increases cumulative soil moisture during rainfall events and significantly weakens the stability of collapsing gully walls, particularly under long-duration light rainfall.
Keyword ：
Collapsing gully Collapsing gully GeoStudio model GeoStudio model Reliability analysis Reliability analysis Safety factor Safety factor Sensitivity analysis Sensitivity analysis Water dynamics Water dynamics
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| GB/T 7714 | Yang, Maojin , Cen, Nanbo , Zhou, Bangning et al. Influence of slope crest soil cracks on water dynamics and gully wall stability under varying rainfall patterns [J]. | CATENA , 2025 , 260 . |
| MLA | Yang, Maojin et al. "Influence of slope crest soil cracks on water dynamics and gully wall stability under varying rainfall patterns" . | CATENA 260 (2025) . |
| APA | Yang, Maojin , Cen, Nanbo , Zhou, Bangning , Lv, Yihao , Jiang, Fangshi , Huang, Yanhe et al. Influence of slope crest soil cracks on water dynamics and gully wall stability under varying rainfall patterns . | CATENA , 2025 , 260 . |
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Flow velocity serves as a key hydraulic parameter in examining rill erosion on slopes. Analysing the characteristics of flow velocity changes and their influencing factors is critical for understanding the rill erosion process and hydrodynamic mechanisms. However, the understanding of the mechanism of flow velocity changes in gravel-laden hyperconcentrated flows on steep slopes is still limited. In this study, different soil-gravel mixtures (with gravel mass contents ranging from 0% to 70% and gravel clast median diameters ranging from 0.08 to 2.95 mm) were used in indoor runoff scouring tests to examine the influence and mechanisms of gravel content on flow velocity under varying unit flow discharges (1.11-4.44 x 10(-3) m(2) s(-1)) and slopes (18-84%). These results indicate that a relatively high gravel content in the sediment significantly impedes the flow velocity. The structural equation model indicates that gravel content primarily reduces flow velocity by positively influencing settling velocity (path coefficient = 0.990, p < 0.001), which in turn exerts a suppressive effect on flow velocity (path coefficient between settling velocity and flow velocity = -0.295, p < 0.001). The contributions of flow discharge, slope and gravel content to flow velocity are 79.7%, 15.6% and 0.5%, respectively. The flow velocity prediction equation established on the basis of these three factors is not only highly accurate (NSE = 0.918) but also has easily obtainable parameters, making it the preferred equation for predicting the rill flow velocity. This study explored the mechanism of flow velocity changes in hyperconcentrated flows on steep slopes, enhancing the understanding of the relationship between sediment particles and the flow velocity, which aids in elucidating the erosion process in soil-gravel mixtures.
Keyword ：
Flow velocity Flow velocity Rill erosion Rill erosion Sediment content Sediment content Sediment particle characteristics Sediment particle characteristics Settling velocity Settling velocity Soil erosion Soil erosion
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| GB/T 7714 | Zhang, Zhenggang , Zhu, Zhehao , Chen, Yuyang et al. The effect of gravel content on the velocity of hyperconcentrated rill flow under steep slope conditions [J]. | EARTH SURFACE PROCESSES AND LANDFORMS , 2025 , 50 (10) . |
| MLA | Zhang, Zhenggang et al. "The effect of gravel content on the velocity of hyperconcentrated rill flow under steep slope conditions" . | EARTH SURFACE PROCESSES AND LANDFORMS 50 . 10 (2025) . |
| APA | Zhang, Zhenggang , Zhu, Zhehao , Chen, Yuyang , Wu, Wei , Meng, Ying , Zhou, Yiyang et al. The effect of gravel content on the velocity of hyperconcentrated rill flow under steep slope conditions . | EARTH SURFACE PROCESSES AND LANDFORMS , 2025 , 50 (10) . |
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