Applied Soil Ecology最新文献

{"title":"Water N/P ratios influence emergent plant nutrient uptake and growth by altering the microbial activities of rhizosphere soil","authors":"Fuchao Zheng ,&nbsp;Dehua Zhao ,&nbsp;Shenglai Yin ,&nbsp;Dianpeng Li ,&nbsp;Miao Zhang ,&nbsp;Zhengjie Zhu ,&nbsp;Shuqing An","doi":"10.1016/j.apsoil.2024.105677","DOIUrl":"10.1016/j.apsoil.2024.105677","url":null,"abstract":"<div><div>Pollutant water discharge greatly alters surface water stoichiometric characteristics, resulting in potential risks for aquatic ecosystems. Few studies have been conducted on the effects of increased water nitrogen (N) and phosphorus (P) ratios (N/P) on nutrient uptake by emergent plants (EPs), which generally obtain nutrients from soil, as well as their mechanisms. A small-scale study was conducted to identify the effects of the influent water N/P ratio on nutrient absorption by reed (<em>Phragmites australis</em>), rhizosphere soil activity and the abundance of N- and P-related functional genes. Sterilization significantly decreased reed biomass and the accumulation of N and P, suggesting the importance of microbes in the rhizosphere and soil. Compared with the low-N/P treatment, the high-N/P treatment generally resulted in significantly greater reed biomass and reed N and P accumulation, as well as lower soil available N (AN) and available P (AP) and significantly greater soil enzyme activities of invertase and phosphatase (<em>p</em> &lt; 0.05). Linear mixed model analysis suggested that reed N and P accumulation was determined mainly by rhizosphere soil AN and AP (negative correlation), respectively. The increased influent water N/P ratios clearly promoted the abundance of the phosphatase gene (<em>phoD</em>), phosphate-binding protein-encoding gene (<em>pstS</em>) and ammonia monooxygenase (<em>amoA</em>) in rhizosphere soil. Thus, although reeds obtain nutrients mainly from soil, an increased influent N/P ratio can increase reed biomass, N and P accumulation by improving the nutritional absorptive capacity and effectiveness of reeds.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105677"},"PeriodicalIF":4.8,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subsurface manure application enhances soil quality, ecosystem multifunctionality, and crop yield in the North China Plain","authors":"Haoruo Li ,&nbsp;Yiwei Shang ,&nbsp;Jiansheng Gao ,&nbsp;Hongyuan Zhang ,&nbsp;Haotian Chen ,&nbsp;Xiquan Wang ,&nbsp;Jianjun Guo ,&nbsp;Xia Zhang ,&nbsp;Jing Wang ,&nbsp;Yuyi Li","doi":"10.1016/j.apsoil.2024.105674","DOIUrl":"10.1016/j.apsoil.2024.105674","url":null,"abstract":"<div><div>Subsurface manure application has been suggested as a priming strategy to improve soil fertility and potentially enhance crop yield quickly. However, the soil quality and ecosystem multifunctionality responses and their relationship with crop yield remain uncertain. Here, a two-year field experiment was conducted to investigate the effects of different subsurface manure application methods (1T, one-time fertilization; and 2T, two-time split fertilization during two consecutive years) with the same manure amount on soil quality index (SQI), ecosystem multifunctionality (EMF), and crop yield in the North China Plain. Compared to control (no manure application, CK), 1T increased SQI at both 0–20 and 20–40 cm soil layers by 15–19 % in the first year, but no change in the second year. As a comparison, 2T increased SQI at 0–20 and 20–40 cm soils by 37–42 % compared to CK in the second year. Meanwhile, 2T increased soil EMF at 0–20 cm (0.4 unit) compared to CK over the two years. Both 1T and 2T increased soil EMF at 20–40 cm (0.1–0.8 unit) over the two years. The crop yield was positively related to surface SQI and subsurface EMF regardless of manure application method. Soil organic C, total C, total N, total P, and the C and P cycling-related enzyme activities were key factors that contributed to the improvement of SQI and EMF. The partial least squares path models revealed that the two subsurface manure application methods enhanced surface SQI and subsurface EMF by improving topsoil nutrients and subsoil enzyme activities separately, consequently increasing crop yield. Overall, our results documented that subsurface manure application is an effective strategy for improving soil quality and crop yield.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105674"},"PeriodicalIF":4.8,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative recovery of soil microbial activity and invertebrate abundance and richness in abandoned and planted pastures in Southeastern Brazil","authors":"Tatiana Cabral de Vasconcelos ,&nbsp;Vinícius Londe ,&nbsp;Anani Morilha Zanini ,&nbsp;Ricardo Ribeiro Rodrigues","doi":"10.1016/j.apsoil.2024.105683","DOIUrl":"10.1016/j.apsoil.2024.105683","url":null,"abstract":"<div><div>The ecological restoration of pastures is a complex process, as these sites may suffer from degraded soil quality and reduced abundance and diversity of invertebrates. Nevertheless, their restoration can contribute to the return of essential ecosystem services, making them an important research area. To better understand the initial process of soil restoration in tropical pastures, we examined soil microbial activity, litter invertebrate abundance and species richness across a land-use gradient in southeastern Brazil. This gradient included a pasture in continuous use (PCU), three 5-year-old moderately assisted recovery (MAR) and unassisted natural recovery (UNR) pastures, and a reference forest (REF). We hypothesized that, owing to soil preparation and enhanced structural complexity, MAR (planted) sites would exhibit higher microbial activity and support a more diverse and abundant invertebrate population than UNR (naturally regenerating) sites. We also predicted that the MAR and REF sites would foster higher soil quality, tree species richness, and tree abundance, accounting for most of the variation in microbial activity and litter invertebrates. Contrary to our hypotheses, the UNR sites showed slightly better levels of microbial activity than the MAR sites, and PCU exhibited the highest levels of microbial biomass carbon, microbial respiration, and β-glucosidase. The MAR and UNR sites were similar in terms of invertebrate abundance and richness, both showing total abundance and taxonomic group numbers comparable to those of REF. We found no correlation between microbial activity and vegetation or soil quality. Only Thysanoptera and Hemiptera invertebrate groups showed a weak association with litter production and soil quality. Our findings suggest that site preparation for tree planting, which is indispensable for areas lacking natural regeneration potential, appears to temporarily disrupt the soil conditions. This implies a longer recovery period for the microbial activity. However, this is not a drawback of tree planting but rather an integral part of the process that contributes to long-term ecosystem restoration. Vegetation variables and general soil quality may have an indirect effect on microbial activity and litter invertebrates. It would be beneficial to consider additional variables to gain a more comprehensive understanding of these interactions.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105683"},"PeriodicalIF":4.8,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successive monoculture of Eucalyptus spp. alters the structure and network connectivity, rather than the assembly pattern of rhizosphere and bulk soil bacteria","authors":"Huili Wang ,&nbsp;Zhengye Wang ,&nbsp;Qiyun Qin ,&nbsp;Qin Ke ,&nbsp;Lijun Chen ,&nbsp;Xianchong Song ,&nbsp;Xiaolong Chen ,&nbsp;Lichao Wu ,&nbsp;Jizhao Cao","doi":"10.1016/j.apsoil.2024.105678","DOIUrl":"10.1016/j.apsoil.2024.105678","url":null,"abstract":"<div><div><em>Eucalyptus</em> as a fast-growing timber tree plays a crucial role in maintaining wood supplication and ecosystem balance worldwide. Nonetheless, the management practices of <em>Eucalyptus</em> plantation in southern China have resulted in productivity decline and soil degradation due to high-intensity successive cultivation. Soil bacteria is a sensitive indicator of soil quality, how does the successive planting of <em>Eucalyptus</em> regulate the soil bacterial community structure for instance the abundance of oligotrophic bacteria, network complexity, and soil bacteria assembly remain ambiguity. To explicate the underlying influencing mechanisms of successive cultivation of <em>Eucalyptus</em> plantations on soil bacterial community structure. Four harvests of <em>Eucalyptus</em> plantations that underwent 0, 1, 2, and 3 times of harvesting were conducted to examine variations in the bacterial community between rhizosphere and bulk soils after successive planting of <em>Eucalyptus</em>. An adjacent evergreen broadleaf forest was employed as control. The present study revealed that successive planting of <em>Eucalyptus</em> increased and reduced the relative abundance of <em>Chloroflexi</em> (oligotrophic bacteria) and <em>Proteobacteria</em> (copiotrophic bacteria), respectively. Continuous planting of <em>Eucalyptus</em> did not modify the assembly pattern of soil bacterial communities, which was governed by stochastic processes. Successive planting of <em>Eucalyptus</em> decreased co-occurrence network complexity, and elevated the proportion of rare microorganisms in the keystone bacterial taxa. Soil particle size composition (clay, silt, sand) indirectly influenced the structure of soil bacterial communities by directly affecting pH, carbon, nutrients, and their stoichiometric ratios. Improving soil physical structure, increasing the input of soil carbon, nitrogen, and other nutrient resources, and maintaining a balanced resource allocation may be effective strategies for ensuring enhanced productivity and sustainable utilization of soil in successive <em>Eucalyptus</em> plantations.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105678"},"PeriodicalIF":4.8,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil particulate organic carbon regulates microbial carbon use efficiency in subtropical forests under nitrogen addition in different seasons","authors":"Xueqi Sun ,&nbsp;Hao Sun ,&nbsp;Qiufang Zhang ,&nbsp;Biao Zhu ,&nbsp;Hui Dai ,&nbsp;Quanxin Zeng ,&nbsp;Jingqi Chen ,&nbsp;Wenwei Chen ,&nbsp;Yuehmin Chen","doi":"10.1016/j.apsoil.2024.105680","DOIUrl":"10.1016/j.apsoil.2024.105680","url":null,"abstract":"<div><div>The Industrial Revolution has driven up atmospheric nitrogen (N) deposition, therefore can alter the physiological metabolism of soil microorganisms and impact their carbon use efficiency (CUE). Microbial CUE is an indispensable regulator for soil C cycle, and even little changes can have a significant impact on the amount of C stored in soils. The intrinsic mechanism and the role of microbial CUE in response N deposition are still unknown. Here, to explore the effect of N addition on microbial CUE across different seasons, we set up a three-level (0, 40, and 80 kg N ha⁻¹ yr⁻¹) field N addition experiment and collected soil samples during both the growing and non-growing seasons. Soil organic C fractions and a series of other indicators were also measured. The results showed that microbial CUE is significantly lower during the growing season compared to the non-growing season, and N addition significantly increases microbial CUE in both the growing and non-growing seasons (+27 % and + 24 % respectively for low N addition and +41 % and +32 % respectively for high N addition). Similarly, nitrogen addition had a positive effect on particulate organic carbon (POC) during both seasons. Significant positive correlation between microbial CUE and POC was found. Further partial correlation analysis revealed that, after controlling for POC, the correlations between other factors and microbial CUE weakened or disappeared, while the significant positive relationship between POC and microbial CUE persisted even after controlling for other factors such as soil C or N availability and microbial activity. Jointly, this result provides empirical evidence for the close relationship between POC dynamics and microbial CUE. Considering the high C accessibility of POC, these results highlight that N addition-induced changes in soil C accessibility rather than C availability play an important role in microbial CUE in the subtropical forests. Compared with traditional models that use a fixed CUE value, the new models should incorporate the changes of microbial CUE and soil C fractions driven by N deposition to more accurately predict soil C sequestration.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105680"},"PeriodicalIF":4.8,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-term organic fertilization increases phosphorus content but reduces its release in soil aggregates","authors":"Hu Cui ,&nbsp;Brian Shutes ,&nbsp;Sheng-Nan Hou ,&nbsp;Xin-Yi Wang ,&nbsp;Hui Zhu","doi":"10.1016/j.apsoil.2024.105684","DOIUrl":"10.1016/j.apsoil.2024.105684","url":null,"abstract":"<div><div>There is currently limited published information on the coupling correlation between phosphorus (P) redistribution and release in soil aggregates. To fulfill this gap, we conducted a 10-year field experiment of soil amended with organic fertilizer to investigate phosphorus transformation and immobilization during the organic fertilization process. Microbial communities, functional genes and enzymes were analyzed to elucidate the multi-mechanisms of the conversion among phosphorus fractions. Phosphorus content in soil aggregates was determined as follows: Fe<img>P (34 % ~ 45 %) &gt; Ca-P (16 % ~ 27 %) &gt; Oc-P (15 % ~ 17 %) &gt; Or-P (13 % ~ 19 %) &gt; Al-P (4 % ~ 5 %) ≈ Ex-P (2 % ~ 4 %). Compared to a control with only chemical fertilizer, a 13 % ~ 38 % increase in P availability of experimental treatments mixed with chemical and organic fertilizers was attributed to the mineralization of Or-P, but not to the dissolution of inorganic P. Following organic fertilization, the <em>phnF</em> gene was dominant factor to promote the mineralization of Or-P, because it encodes C<img>P lyases that pyrolyzes the C<img>P bounds in organophosphate esters. Overall, organic fertilization decreased P release risk in soil aggregates, especially for the micro-aggregates that showed a higher capacity to activate non-available P and immobilize endogenous P in farmland soil. These results provide a theoretical guidance for the source control of P pollution in agro-ecosystems.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105684"},"PeriodicalIF":4.8,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Returning farmland to forests and grasslands promotes soil quality restoration in Northeast China: Evidence from soil nitrogen cycle","authors":"Bin Li ,&nbsp;Junnan Ding ,&nbsp;Xiaoqian Liu ,&nbsp;Dan Zhu ,&nbsp;Mengmeng Zhang ,&nbsp;Lina Qu ,&nbsp;Wei Li ,&nbsp;Yue Wang ,&nbsp;Xin Li","doi":"10.1016/j.apsoil.2024.105655","DOIUrl":"10.1016/j.apsoil.2024.105655","url":null,"abstract":"<div><div>Soils contain a diversity of microbial communities involved in the nitrogen cycle (N-cycling), which are essential for maintaining the quality and health of soil. However, agricultural intensification has led to land use conversion, which has had a negative impact on ecosystems. There is a lack of research on the whole N-cycling process in land use change under the context of ecological restoration. Here, we utilized qPCR (Quantitative Real-time PCR) and MiSeq techniques to analyse the functional genes related to nitrogen fixation (<em>nifH</em>), nitrification (AOA and AOB) and denitrification (<em>norB</em> and <em>nosZ</em>) to explore whether the conversion of farmland to forest and grassland affects changes in microbial communities involved in the N-cycling. We reveal the potential effects of ecological restoration on microbial community function in the N-cycling through soil properties. Specifically, land use conversion increased N-cycling gene abundance and changed in the N-cycling microbiome exhibited. The ecological restoration has increased the importance of stochastic processes in the assembly of AOA and AOB communities and affected the ecological cluster of soil N-cycling microbial network. Overall, these findings reveal specific microbial processes and interactions that influence the soil N-cycling and provide insights for future research on sustainable land management approaches that support soil health.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105655"},"PeriodicalIF":4.8,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Desorption of mineral-bound phosphorus across different cropping systems and agronomic strategies to promote efficient input use","authors":"Juan Pablo Almeida ,&nbsp;Dries Roobroeck ,&nbsp;Linda-Maria Dimitrova Mårtensson ,&nbsp;Pedro Rosero ,&nbsp;Geoffrey Kimutai ,&nbsp;Thomas Kätterer ,&nbsp;Håkan Wallander","doi":"10.1016/j.apsoil.2024.105672","DOIUrl":"10.1016/j.apsoil.2024.105672","url":null,"abstract":"<div><div>Phosphorus (P) is a limiting nutrient to production in various agricultural ecosystems and many soils contain large amounts of legacy P that is strongly adsorbed on iron (Fe) and aluminum oxides and therefore poorly available to plants. Here we investigate how much mineral-bound P is mobilized in different cropping systems and the influence of agronomic practices on this process. Root ingrowth cores filled with a mix of sand and P-saturated goethite were incubated in the topsoil of: 1) sugar beet in Sweden under sufficient or deficient P additions, 2) perennial Kernza <em>(Thinopyrum intermedium)</em> in Sweden as monoculture or intercropped with Alfalfa with organic management, contrasted to annual winter wheat with inorganic fertilization, and 3) soybean grown in a P-fixing soil in Kenya with or without fertilizer and biochar addition. After one growing season, desorption was evaluated based on the amount of P that remained in the goethite and its ratio with Fe. Possible relationships between the rate of P desorption and abundance of arbuscular mycorrhizal fungi (AMF) were explored by profiling phospholipid fatty acid (PLFA) and neutral lipid fatty acid (NLFA) biomarkers in the sand-goethite mixture collected from the cores.</div><div>Significant P desorption was found in the rhizosphere of sugar beets under deficient P supply but not in bulk sand-goethite mixture. No P desorption was observed in Kernza as monocrop or intercropped with alfalfa, nor winter wheat. Soybeans had a strong ability to desorb P under all nutrient regimes but significantly more when no fertilizer was applied. In the soybean experiment a significant positive relationship was found between P removal rates and abundance of AMF.</div><div>These results indicate that strategies for downregulating P application rates and promoting crop-AMF association can be a viable avenue to mobilize legacy P and help make more efficient use of nutrient inputs. At the same time, cropping systems and soil conditions have an overriding influence on the potential P desorption and must therefore be carefully considered during implementation.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105672"},"PeriodicalIF":4.8,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental filtration and host selection effect influence bacterial community assembly in broad-leaved Korean pine forests: A regional scale study","authors":"Honglin Wang ,&nbsp;Changcheng Mu ,&nbsp;Guoyong Yan ,&nbsp;Yajuan Xing ,&nbsp;Qinggui Wang","doi":"10.1016/j.apsoil.2024.105664","DOIUrl":"10.1016/j.apsoil.2024.105664","url":null,"abstract":"<div><div>In forest ecosystems, the bacterial communities primarily establish symbiotic relationships with host plants, facilitating various ecological niches across different spatial scales. However, our understanding of bacterial community assembly mechanisms at both regional distribution scales and within different niche habitats of hosts remains limited. In this study, we investigated bacterial community dynamics, assembly processes, and co-occurrence network patterns in bulk soil, rhizosphere, root endosphere, and leaf endosphere spanning from north to south in the broad-leaved Korean pine forests of northeastern China. Our findings revealed that bacterial composition varied across distribution regions and compartment niches, with diversity also varying among these compartment niches. Deterministic processes predominantly shaped bacterial community assembly across geographic distribution gradients, whereas stochastic processes were more influential in differentiating bacterial communities within specific compartment niches. The co-occurrence network indicated lower stability of bacterial communities at the southernmost site of DD across different geographic distributions and in the leaf endosphere across different compartment niches. Furthermore, the co-occurrence network identified <em>Jatrophihabitans</em> and Betaproteobacteriales as keystone taxa at HH and DD sites, while <em>Aliihoeflea</em> and <em>Actinoplanes</em> were identified in the root endosphere and leaf endosphere, associated with essential functions like carbon metabolism, nitrogen fixation, and pathogen resistance. Source tracking showed bulk soil was the main source of bacterial communities in the rhizosphere, root endosphere, and leaf endosphere. Environmental factors such as soil pH in shaping bacterial community assembly across different geographical areas, while host selection was influential in determining bacterial community assembly within compartment niches. Furthermore, bacterial community similarity and abundance were influenced by environmental factors such as soil pH, total phosphorus, and mean temperature. Overall, the insights gained contribute to a deeper understanding of the relationship between bacterial communities and host plants, carrying important implications for plant conservation and practices related to forest ecosystem functioning.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105664"},"PeriodicalIF":4.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limits of resistance of chernozems to petrol pollution: Comparative assessment of different subtypes","authors":"Sergey Kolesnikov,&nbsp;Elena Nevedomaya,&nbsp;Anna Kuzina,&nbsp;Vladimir Gaivoronskiy,&nbsp;Tatiana Minnikova,&nbsp;Kamil Kazeev,&nbsp;Tatiana Minkina,&nbsp;Anuj Ranjan,&nbsp;Svetlana Sushkova,&nbsp;Evegenyi Shuvaev,&nbsp;Elena Antonenko,&nbsp;Anastasiya Nemtseva,&nbsp;Vladislav Popov,&nbsp;Vishnu D. Rajput","doi":"10.1016/j.apsoil.2024.105670","DOIUrl":"10.1016/j.apsoil.2024.105670","url":null,"abstract":"<div><div>Petroleum hydrocarbon (PHs) pollution is a serious environmental hazard owing to the growing concern about oil spills. To predict the possible negative consequences of oil spills and their presence in the environment, it is necessary to identify and develop regional and/or local environmentally safe limits that would take into account the local ecological and geochemical characteristics of soils. Model experiments on PHs pollution were carried out for different subtypes of chernozems: Voronic Chernozems (Pachic, Loamic), Calcic Chernozems (Pachic, Loamic), Haplic Chernozems (Pachic, Clayic), Luvic Chernozems (Pachic, Loamic), Haplic Chernozems (Pachic, Loamic), and Haplic Arenosols (Eutric, Arenic). Petrol was applied as a source of PHs to the pre-moistened soil at weight concentrations of 1 % (low pollution), 5 % (medium pollution), and 10 % (high pollution) of the soil weight. After 30 days, the important soil indicators viz., catalase and dehydrogenase activity, the total number of soil bacteria, and the abundance of <em>Azotobacter</em> along with root length of <em>Raphanus sativus</em> (radish) grown on the sample soils were determined. Based on these findings, the ranking of soil resistance to petrol contamination was compiled as Haplic Chernozems (Pachic, Clayic) ≥ Calcic Chernozems (Pachic, Loamic) = Luvic Chernozems (Pachic, Loamic) ≥ Haplic Chernozems (Pachic, Loamic) = Voronic Chernozems (Pachic, Loamic) ≥ Haplic Arenosols (Eutric, Arenic). The identified environmentally safe petrol limits for different subtypes of chernozems range from 1.5 % to 0,6 %. This finding suggests that Haplic Chernozems (Pachic and Clayic) are more resistant to petrol pollution and also provide a safer limit of up to 1.5 % of petrol pollution. The obtained results can be used to develop regional values of the maximum permissible residual petrol content in different subtypes of chernozems.</div></div>","PeriodicalId":8099,"journal":{"name":"Applied Soil Ecology","volume":"203 ","pages":"Article 105670"},"PeriodicalIF":4.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}