Gravel mulching effects on soil physicochemical properties and microbial community composition in the Loess Plateau, northwestern China

Lv, Weiming; Yang, Qinli; Xie, Zhenghui; Wang, Xinping; Wang, Yajun; Hua, Cuiping

doi:10.1016/j.ejsobi.2019.103115

Cited by 23 publications

(14 citation statements)

References 42 publications

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“…Gravel mulch has been shown to change the soil hydrological processes in a manner that has resulted in increased soil nutrient contents, increased water infiltration, reduced evaporation, and increased trapping of dust particles (Li, 2003; Lv et al, 2019; Shojaei, Hakimzadeh Ardakani, Sodaiezadeh, Jafari, & Afzali, 2019). The soil water content has a significant effect on the wind's movement of soil particles, and small increases in soil moisture have been reported to cause distinct reductions in wind erosion (De Oro, Colazo, Avecilla, Buschiazzo, & Asensio, 2019; Funk, Reuter, Hoffmann, Engel, & Öttl, 2008).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of wind erosion control practices at a photovoltaic power station within a sandy area of northwest, China

Chun

Hill

et al. 2021

Land Degrad Dev

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The widespread construction of photovoltaic power stations within northwest China poses an environmental threat because of severe increased wind erosion and land degradation. Engineering, plant, and biocrust treatments were evaluated in this study for their effectiveness in the reduction of wind erosion. The placement of solar panels caused wind speed variation and resulted in distinct abrasion and deposition zones between the rows of the solar panels and the formation of deflation zones under the solar panels. Combined treatments (gravel and red clay mulch were applied within the abrasion and deposition zones, respectively) and moss‐crust were the optimal choices within the engineering and biocrust treatments, respectively. We found that for engineering treatments, the combined procedures led to treatments had sand transport rate reductions of 87%, while the straw checkerboard, gravel, and red clay treatments gave reductions of 51, 78, and 74%, respectively. Within the biocrust treatments, the moss‐crust decreased the sand transport rates and the sand erosion–deposit budget by 71 and 114%, respectively, while the cyanobacteria crust caused reductions of 65 and 109%, respectively, in comparison to the control. Both plant treatments decreased the sand transport rates and the sand erosion–deposit budgets, but were inferior to other optimal treatments with the best plant treatment dependent on the placement pattern used for plant establishment. All the treatments had effects on reducing wind erosion, and we strongly recommend the use of moss‐crust and combined treatments in the deflation zones and between the rows of the solar panels, respectively, to significantly reduce the severe wind erosion occurring at these photovoltaic power stations located in sandy areas.

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Section: Discussionmentioning

confidence: 99%

Evaluation of wind erosion control practices at a photovoltaic power station within a sandy area of northwest, China

Chun

Hill

et al. 2021

Land Degrad Dev

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“…The distribution and diversity of fungal families are strongly influenced by heavy metals, in addition to other well-known chemical drivers (i.e., pH, salinity, K, P, and NO2 -) (Kasel et al, 2008;Lauber et al, 2008;Pan et al, 2020). Heavy metals, particularly Cd, not only alter the soil chemistry, but also have detrimental effects on soil microbial communities when present even in small quantities, which could lead to losses in diversity and soil fertility (Bååth & Anderson, 2003;Kasemodel et al, 2019;Lin et al, 2019;Lv et al, 2019). AM fungi are generally sensitive to changes in soil conditions, including pH, heavy metals, and micronutrients, and are considered to be useful bioindicators of soil contamination (Dietterich et al, 2017;Kasemodel et al, 2019;Lin et al, 2019;Oehl et al, 2010;Pan et al, 2020;Vyas & Gupta, 2014).…”

Section: Discussionmentioning

confidence: 99%

Diversity and structure of arbuscular mycorrhizal fungal commmunities and their chemical drivers across dryland habitats in Qatar

Adenan¹,

Oja²,

Alatalo³

et al. 2020

Preprint

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Qatar is largely characterized by a hyper-arid climate and low soil fertility, which combine to create a stressful soil environment for arbuscular mycorrhizal (AM) fungi. Here we present a study on AM fungi communities and their relationship to soil chemical characteristics. We used high-throughput seqeuncing technique for identifying AM fungal diversity and community composition from different habitat types across Qatar. We found 127 AM fungal taxa, of which majority wee members of the family Glomeraceae. In contrast to what was hypothesized, AM fungi were mainly influenced by soil phosphorous and potassium. Chemical soil properties explained 76% of the variation in AM fungi between locations. The lowest AM fungal diversity was observed in barren areas and sand dunes, possibly due to low bioavailability of total nitrogen, while the highest diversity was observed in well-developed grass patches. Present AM fungi in Qatar were not affected by soil and pH; these fungi have likely been exposed to high salinities through their evolutionary history in the region, favoring resistant AM fungi through natural selection. These findings provide baseline information on AM fungal assemblages from the Arabian Peninsula, and thus contribute to better understanding of global patterns of AM fungi and their chemical drivers.

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“…Previous research has demonstrated that small-sized gravel (2-5 mm) is more effective in controlling surface rainwater runoff than large-sized gravel (40-60 mm), and it can promote increased water entry into the soil surface [21]. In contrast, the smaller the coal gangue grain size, the weaker the permeability and the greater the water holding capacity.…”

Section: Effect Of Coal Gangue Mulching On Water In Ltrationmentioning

confidence: 99%

“…Gravel mulching has also been conducted for at least 300 years in the arid region of northwestern China [12]. Several eld trials have shown that gravel mulching can intercept and store rainfall [13][14][15], increase evaporation resistance and reduce evaporation from the soil surface [16][17], improve the soil water retention capacity [18], decrease the accumulation of surface salt [19], in uence the microbial community composition and function [20][21], increase dry matter production [22][23], and improve energy-use e ciency and economic bene ts [24]. However, the mulching e ciency varies widely, depending on the characteristics of the mulch, including particle size [25], gravel texture [10], percent mulch coverage [26], and gravel mulch color [27].…”

Section: Introductionmentioning

confidence: 99%

Influence of Coal Gangue Mulching With Various Thicknesses and Particle Sizes on Soil Water Characteristics

Han

Dong

Geng

et al. 2021

Preprint

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Water availability seriously affects vegetation restoration in arid mining areas, and mulching is an effective way to improve soil water conditions. Coal gangue occupies large swathes of land resources, resulting in ecological fragility and various environmental problems. Despite coal gangue having mineral elements similar to those in soil, its potential function as a mulch for soil water conservation has been unclear. Herein, mulching on the surfaces of soil columns was conducted using four particle size ranges and four thicknesses under laboratory conditions to investigate water infiltration and evaporation under different conditions. Apart from the treatments with particle size of 0–0.5 cm, the remaining mulch treatments with 16 cm thickness involved greater infiltration and lower evaporation. Therefore, we recommend a 16 cm-thick mulch treatment as the preferred mulching style. Treatments with a particle size of 0–0.5 cm and those with 4-cm thickness are not suggested due to their lower infiltration and higher evaporation characteristics. Overall, to enhance the soil water storage capacity in mining areas, the results suggest that mulching coal gangue with particle size exceeding 0.5 cm and a thickness exceeding 8 cm is suitable.

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Gravel mulching effects on soil physicochemical properties and microbial community composition in the Loess Plateau, northwestern China

Cited by 23 publications

References 42 publications

Evaluation of wind erosion control practices at a photovoltaic power station within a sandy area of northwest, China

Evaluation of wind erosion control practices at a photovoltaic power station within a sandy area of northwest, China

Diversity and structure of arbuscular mycorrhizal fungal commmunities and their chemical drivers across dryland habitats in Qatar

Influence of Coal Gangue Mulching With Various Thicknesses and Particle Sizes on Soil Water Characteristics

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