Effects of forest residue mulching on organic matter and nutrient exports after wildfire in North-Central Portugal

Prats, S.A.; Serpa, D.; Santos, L.; Keizer, J.J.

doi:10.1016/j.scitotenv.2023.163825

Cited by 4 publications

(1 citation statement)

References 66 publications

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“…Organic mulching is an important practice for improving soil fertility and plant productivity in urban forest ecosystems. Our study revealed that organic mulching can significantly increase the soil nutrient contents ( Figure 2 ), similar to the results of other mulching experiments [ 25 , 26 ]. This phenomenon may be mainly attributed to the decomposition of organic mulches, which can influence multiple soil properties and, through these changes, can indirectly affect soil microbial communities [ 3 , 12 ].…”

Section: Discussionsupporting

confidence: 90%

How Organic Mulching Influences the Soil Bacterial Community Structure and Function in Urban Forests

Zhou,

Sun,

et al. 2024

Microorganisms

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Urban forest soil is often disturbed by frequent human activity. Organic mulching is effective for improving soil quality; however, the effects of organic mulching on soil bacterial communities in urban forests are still largely unexplored. This study evaluated how organic mulching changed the urban forest soil bacterial community through an incubation experiment. Four treatments were applied: (1) no organic mulch (CK); (2) wood chips alone (5 g, Mw); (3) wood compost alone (5 g, Mc); and (4) wood chips + wood compost (This mulch was divided into two layers, i.e., the upper layer of wood chips (2.5 g) and the lower layer wood compost (2.5 g, Mw+c).) We found significant differences in the soil physicochemical properties under organic mulching after incubation. Overall, organic mulching can alter soil bacterial community structure. Soil alkali-hydrolyzable nitrogen, soil organic carbon, soil total nitrogen, and carbon-nitrogen ratio were the main factors affecting soil microbial community structures. Soil bacterial groups under organic mulching treatments mainly acted on the C and N cycling of functional pathways in soil. This study suggests that organic mulching could maintain the development of soil bacteria, which establishes a theoretical foundation for enhancing the microbiological environment of urban forest soils.

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Section: Discussionsupporting

confidence: 90%

How Organic Mulching Influences the Soil Bacterial Community Structure and Function in Urban Forests

Zhou,

Sun,

et al. 2024

Microorganisms

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Optimizing sustainable agriculture: A comprehensive review of agronomic practices and their impacts on soil attributes

Al-Shammary,

Al-Shihmani,

Fernández-Gálvez

et al. 2024

Journal of Environmental Management

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Fire enhances changes in phosphorus (P) dynamics determining potential post-fire soil recovery in Mediterranean woodlands

Souza-Alonso,

Prats,

Merino

et al. 2024

Sci Rep

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Soil phosphorus (P), which is essential for ecosystem functioning, undergoes notable changes after fire. However, the extent to which fire characteristics affect P dynamics remains largely unknown. This study investigated the impact of type of fire (prescribed burning and natural wildfires) of different levels of severity on P dynamics in Mediterranean soils. Soil P concentrations in the organic layers were strongly affected by fire severity but not fire type. Low severity fire did not have any observable effect, while moderate fire increased soil P levels by 62% and high severity decreased soil P concentration by 19%. After one year, the soil P concentration remained unchanged in the low severity fires, while rather complex recovery was observed after moderate and high severity fires. In the mineral layers, P concentration was reduced (by 25%) immediately after the fires and maintained for one year (at 42%). 31P-NMR spectroscopy revealed almost complete post-fire mineralization of organic P forms (mono- and diesters), large increases in inorganic orthophosphate and a decrease in the organic:inorganic P ratio (Po:Pi). After one year, di-esters and orthophosphate recovered to pre-fire levels at all sites, except those where parent material composition (high pH and Fe concentration) had an enduring effect on orthophosphate retention, and thus, on the total soil P. We showed that fire severity and soil pH (and hence, soil mineralogy) played an essential role in soil P dynamics. These findings are important for reliable assessment of the effects of fire on soil P conservation and for improving the understanding the impact of prescribed burning.

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Effects of forest residue mulching on organic matter and nutrient exports after wildfire in North-Central Portugal

Cited by 4 publications

References 66 publications

How Organic Mulching Influences the Soil Bacterial Community Structure and Function in Urban Forests

How Organic Mulching Influences the Soil Bacterial Community Structure and Function in Urban Forests

Optimizing sustainable agriculture: A comprehensive review of agronomic practices and their impacts on soil attributes

Fire enhances changes in phosphorus (P) dynamics determining potential post-fire soil recovery in Mediterranean woodlands

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