Proceedings - Soil Science Society of America最新文献

{"title":"Correction to “Biodegradability of dissolved organic carbon in boreal peatland forest is affected by water table, labile carbon, and nitrogen availability but not forest harvesting alone”","authors":"","doi":"10.1002/saj2.70093","DOIUrl":"https://doi.org/10.1002/saj2.70093","url":null,"abstract":"<p>Kinnunen, N., Laurén, A., Palviainen, M., Berninger, F., Zhu, X., Khatun, R., &amp; Pumpanen, J. (2025). Biodegradability of dissolved organic carbon in boreal peatland forest is affected by water table, labile carbon, and nitrogen availability but not forest harvesting alone. <i>Soil Science Society of America Journal</i>, <i>89</i>, e70010. https://doi.org/10.1002/saj2.70010</p><p>The funding statement below has been added to the article:</p><p>Open access publishing facilitated by Ita-Suomen yliopisto, as part of the Wiley—FinELib agreement.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144292842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover cropping with reduced nitrogen fertilization rate enhances soil carbon but not nitrogen in the malt barley–pea rotation","authors":"Upendra M. Sainju","doi":"10.1002/saj2.70086","DOIUrl":"https://doi.org/10.1002/saj2.70086","url":null,"abstract":"<p>Reduction in N fertilization rate due to N supplied by pea (<i>Pisum sativum</i> L.) may enhance soil C and N in the malt barley (<i>Hordeum vulgare</i> L.)–pea rotation. The effect of winter cover cropping (oat [<i>Avena sativa</i> L.] vs. none) and N fertilization rate (0, 40, 50, 60, 70, and 80 kg N ha⁻¹) for malt barley (NR) was evaluated on soil C and N stocks at the 0- to 120-cm depth from 2013 to 2019 in the dryland malt barley–pea rotation in the US northern Great Plains. Carbon and N stocks were soil total C (STC), soil organic C (SOC), soil inorganic C (SIC), and soil total N (STN). Cover crop C and N were greater for 40 kg N ha⁻¹ than other NRs and crop residue C and N were greater in 2016 than other years. The STC and SOC at 0–15 and 15–30 cm increased by 0.02 and 0.06 Mg C ha⁻¹ kg⁻¹ N in 2016 and 2019, respectively (<i>p</i> ≤ 0.10). The STC at 0–15 and 15–30 cm was greater at 40 than 50 and 70 kg N ha ⁻¹ in 2019. The STN at 15–30 cm increased by 0.004 Mg N ha⁻¹ kg⁻¹ N with than without cover cropping. The STC, SOC, and STN at 0–15 and 15–30 cm also increased at greater rates from 2013 to 2019 with than without cover cropping (<i>p</i> ≤ 0.10). Cover cropping with reduced N fertilization rate for malt barley (NR) can enhance soil C but not soil N stock at surface layers in the malt barley–pea rotation.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70086","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil development along an elevational transect in the arid White Mountains, California","authors":"Simmi Tomar,&nbsp;Daniel R. Hirmas,&nbsp;Robert C. Graham,&nbsp;Matthew Cole,&nbsp;Hoori Ajami,&nbsp;Aapris Frisbie,&nbsp;Andrew B. Gray,&nbsp;Ed Blake","doi":"10.1002/saj2.70083","DOIUrl":"https://doi.org/10.1002/saj2.70083","url":null,"abstract":"<p>Arid mountain ecosystems are unique environments characterized by low precipitation, extreme diurnal temperature, sparse vegetation, abundant coarse fragments, and dust. To understand the complex processes driving soil genesis in these regions, 11 sites along an elevational transect, ranging from 2200 to 4300 m above sea level in the White Mountains of California were examined on primarily granodiorite and quartzite lithologies. Soils were described and sampled, and physical and chemical properties including particle size distribution, bulk density, pH, and organic and inorganic carbon were determined. At low elevations, rainfall facilitates rapid water infiltration and flux through soil macropores, causing deep translocation of fine-earth material. Conversely, higher elevations receive more snowfall, which directs infiltration toward pores in the soil matrix resulting in shallower soil development but relatively greater chemical weathering. Dominant lithologies in the range appear to influence soil development through the potential for rocks to be embedded at the land surface. Surface rock embedding further modifies the potential for macropore versus matrix flow influencing the depth of soil development and degree of weathering. These findings reveal the combined effects of climate and lithology on soil formation and may guide future studies of arid mountains.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil degradation mobilizes soil nutrients placing Canadian Prairie wetlands at risk","authors":"Ehsan Zarrinabadi,&nbsp;David A. Lobb,&nbsp;Masoud Goharrokhi,&nbsp;Eric Enanga,&nbsp;Purbasha Mistry,&nbsp;Pascal Badiou,&nbsp;Irena F. Creed","doi":"10.1002/saj2.70088","DOIUrl":"https://doi.org/10.1002/saj2.70088","url":null,"abstract":"<p>Depressional wetlands in the Canadian Prairies are experiencing degradation due to intensive agricultural practices in adjacent upland areas. Depressional wetlands within cropland are particularly affected, as increased sedimentation and runoff elevate nutrient levels within these ecosystems. This study assessed soil organic carbon (SOC) and soil particulate phosphorus (SPP) stocks, fluxes, and balances within the contributing catchment area to depressional wetlands. Catchment-scale sediment tracing using ¹³⁷Cs and budgeting methods was employed to examine the interactions between soil degradation, sediment movement, and nutrient redistribution. Analysis of 165 soil/sediment cores from eight wetland catchments revealed spatial heterogeneity in SOC and SPP stocks across upper-, middle-, and lower-slope and depression topographical sequences. SOC levels ranged from 6.9 to 104.1 kg m⁻², while SPP varied from 0.06 to 1.9 kg m⁻² within soil depth profile. Riparian areas at slope bottoms emerged as key accumulation sites for sediment, SOC, and SPP, underscoring their role as natural filters that intercept sediment and nutrients before they reach wetlands. These findings highlight the vulnerability of Canadian Prairie depressional wetlands to sediment and nutrient loading, emphasizing the need for soil erosion control strategies—such as the conservation of riparian buffers—to mitigate the adverse effects of agricultural activities on these vital ecosystems.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trees for soil organic carbon storage in a temperate organic agroforestry system","authors":"Cecilia Albert-Black,&nbsp;Debasish Saha,&nbsp;Jennifer Franklin,&nbsp;Asher Wright,&nbsp;Shaylan Kolodney,&nbsp;Sindhu Jagadamma","doi":"10.1002/saj2.70080","DOIUrl":"https://doi.org/10.1002/saj2.70080","url":null,"abstract":"<p>Agroforestry systems (AFS) are an effective land management strategy for restoring soil organic carbon (SOC) in organic systems by contributing significant amounts of biomass inputs and minimizing the need for tillage. This study examined the influence of tree age (4 and 7 years) and distance from tree base (0.5, 2, and 15 m) in a silvopasture AFS at three soil depths (0–10, 10–30, and 30–60 cm) on soil organic carbon stock (SOC_stock), key functional SOC fractions including microbial biomass C, water-extractable organic carbon (WEOC), permanganate oxidizable C (POXC), particulate organic matter carbon (POM-C), and mineral-associated organic matter C (MAOM-C), as well as living root biomass C. Results showed that SOC_stock down to 60 cm was 18% greater at 0.5 m from 7-year-old trees (74.95 ± 2.0 Mg C ha⁻¹) compared to the grass-dominated alleyways at 15 m, whereas 4-year-old trees showed no variation in SOC_stock across distance. SOC_stock down to 60 cm was also 26% greater at 0.5 m from 7-year-old trees than from 4-year-old trees, driven by 33.2% greater WEOC, 38.1% greater POXC, 149% greater POM-C, and 50.5% greater stable MAOM-C in the top 0–10 cm. At 10–30 cm, only the WEOC fraction was greater at 0.5 m from 7-year-old trees than 4-year-old trees. Root biomass C in the 60 cm profile was also greater at 0.5 m from 7-year-old trees (234%) than from 4-year-old trees, contributed almost entirely by tree root biomass C than pasture root biomass C. These findings demonstrate the potential of trees in a temperate region silvopasture AFS at enhancing SOC storage and stabilization over time, even within the first few years after establishment.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of irrigation with Lake Kinneret water on the chemistry of soils in the headwater basin","authors":"M. Iggy Litaor,&nbsp;Naama Badihi,&nbsp;Avishag Amouyal,&nbsp;Oren Reichman","doi":"10.1002/saj2.70087","DOIUrl":"https://doi.org/10.1002/saj2.70087","url":null,"abstract":"<p>The farming areas in the catchment of Lake Kinneret basin are irrigated with Dan Spring waters, characterized by a concentration of 10 mg/L of Cl. Climate change simulation predicts that by the year 2050, the flow of the headwater springs will drop by 20%, a finding that poses a significant threat to the future of farming in the basin. The Israel Water Authority proposed irrigating Kinneret water after dilution with the Dan Spring water. To test the possible ramifications on soil health, three irrigation treatments were used, including Kinneret water (300 mg/L Cl⁻), mix-diluted water (150 mg/L Cl⁻), and control irrigation with Dan water (10 mg/L Cl⁻). The experiment was conducted in a factorial structure (5 common soils × 3 treatments × 6 repetitions) in 25-L pots. A total of 945 weekly leachates were sampled, and Cl, pH, electrical conductivity (EC), and sodium adsorption ratio (SAR) were determined. To determine the exchangeable sodium percentage (ESP), soil samples were collected from two depths (0–10 cm and 30–40 cm). Significant differences were found between the three treatments in all salinity and sodicity parameters (<i>p </i>&lt; 0.001) measured in leachates and soils. The difference between the treatments was most pronounced in the summer when the Kinneret-irrigated soils exhibited means of EC, 3584 µS/cm; Cl, 1694 mg/L; SAR, 10.07 meq/L^0.5; and ESP, 8.2%. Changes in salinity and sodicity in leachates and soils corresponded well to changes in evaporation. This test study strongly suggests that changing water sources for irrigation because of climate change may increase soil salinity across the entire Mediterranean region.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil organic carbon fractionation in sandy soils in the semiarid grasslands and forested areas of Nebraska Sandhills","authors":"Lidong Li,&nbsp;Britt Fossum,&nbsp;Mahmoud Sleem,&nbsp;Tala Awada,&nbsp;Jeremy Hiller,&nbsp;Michael Kaiser","doi":"10.1002/saj2.70084","DOIUrl":"https://doi.org/10.1002/saj2.70084","url":null,"abstract":"<p>Soil organic carbon (OC) fractionation enhances our mechanistic understanding of the processes that govern OC storage. However, research on OC fractionation in sandy soils remains limited. Here, we sampled the sandy soils under three vegetation types: native grass, eastern redcedar (<i>Juniperus virginiana</i>), and ponderosa pine (<i>Pinus ponderosa</i>). We fractionated soils into free particulate organic matter (fPOM), occluded particulate organic matter (oPOM), mineral-associated organic matter (MAOM), and water-extractable organic matter (WEOM) at three soil depths (0–10, 10–30, and 30–100 cm). At the 0- to 10-cm depth, the grassland had lower bulk soil OC compared to the cedar and pine forests (7.09 ± 0.88 vs. 12.84 ± 1.65 and 17.90 ± 2.53 g kg⁻¹, <i>p</i> &lt; 0.05). At 10–30 cm, grassland had higher bulk soil OC than pine forest (4.24 ± 0.49 vs. 2.68 ± 0.32 g kg⁻¹, <i>p</i> &lt; 0.05) but did not differ from cedar forest (4.51 ± 0.55 g kg⁻¹, <i>p</i> &gt; 0.05). At 30–100 cm, vegetation cover did not have significant effects (<i>p</i> &gt; 0.05). The proportion of protected (MAOM or oPOM) to unprotected (fPOM) OC increased with soil depth, highlighting the increasing OC persistence with soil depth. The MAOM shows a finite capacity for OC. The POM rather than MAOM dominated soil OC because of limited mineral surface area and microbial transformation in these sandy soils. Our study enhances the mechanistic understanding of OC dynamics within fractions of sandy soils, an important component of terrestrial OC sequestration.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing dry and wet sieving with laser diffraction to the hydrometer method for particle size analysis of sandy bioretention soil media","authors":"Joseph S. Smith,&nbsp;R. Andrew Tirpak,&nbsp;William R. Osterholz,&nbsp;Ryan J. Winston","doi":"10.1002/saj2.70079","DOIUrl":"https://doi.org/10.1002/saj2.70079","url":null,"abstract":"<p>Standardization of particle size analysis (PSA) is crucial to ensure the proper blending of stormwater filter media such as bioretention soil media (BSM). BSM typically contains &gt;80% sand and is amended with organic matter and fines (silt and clay) to support pollutant removal. However, there is currently no standardized PSA method to verify whether BSM meets design specifications. This study compares three PSA methods—hydrometer, dry sieving with laser diffraction (DS + LD), and wet sieving with laser diffraction (WS + LD)—to evaluate their accuracy and repeatability for analyzing sandy BSM. Twenty-seven BSM samples were collected from three bioretention cells in Ohio. Substantial variability in results was observed depending on the BSM sample mass used in the hydrometer method. Triplicate BSM analyses by both DS + LD (83.9 ± 1.7% sand, 9.6 ± 3.0% silt, 6.5 ± 2.7% clay) and WS + LD (84.1 ± 1.7% sand, 10.6 ± 2.2% silt, 5.3 ± 1.7% clay) demonstrated high intra- and inter-method agreement, especially for sand content. The hydrometer and WS + LD methods were the most consistent for measuring clay content. We recommend measuring the sand and fines fractions separately after appropriate dispersion when conducting PSA on sandy soils like BSM. Although PSA requires additional time and cost, ensuring the proper delivery of well-characterized BSM outweighs the costs of potential bioretention cell clogging and reconstruction. The method used for BSM textural analysis should be reported by laboratories and on delivery of BSM. Future research should focus on BSM pretreatment methods prior to analysis of the mineral fraction to establish a standardized method for BSM PSA.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Precipitation influences pre-sidedress soil nitrate thresholds for corn production","authors":"Emerson F. C. Souza,&nbsp;Fabián G. Fernández,&nbsp;Karina P. Fabrizzi,&nbsp;Jeffrey A. Coulter,&nbsp;Rodney T. Venterea,&nbsp;Daniel E. Kaiser,&nbsp;Carl J. Rosen,&nbsp;Jeffrey A. Vetsch,&nbsp;Paulo H. Pagliari,&nbsp;Melissa L. Wilson,&nbsp;Yuxin Miao,&nbsp;Katsutoshi Mizuta,&nbsp;Renzo Negrini,&nbsp;Jeppe Kjaersgaard,&nbsp;Dawn Bernau,&nbsp;Vasudha Sharma","doi":"10.1002/saj2.70085","DOIUrl":"https://doi.org/10.1002/saj2.70085","url":null,"abstract":"<p>Minnesota is a leading corn (<i>Zea mays</i> L.) producer in the United States, requiring substantial nitrogen (N) inputs for optimal yields. Using an in-season critical soil nitrate (NO₃⁻-N) concentration threshold to adjust fertilization rates can improve N management and reduce environmental impacts. This study assessed corn grain yield response to in-season (i.e., V4–V6 corn development stage) soil NO₃⁻-N concentration to establish a critical pre-sidedress soil NO₃⁻-N test (PSNT) under Minnesota conditions. Data included were obtained from 34 field experiments conducted from 2012 to 2019 across the major corn production regions of Minnesota. Relationships between PSNT and relative corn grain yield were analyzed using a quadratic-plateau regression model. Across the entire dataset, a PSNT of 20 ± 2.5 mg NO₃⁻-N kg⁻¹ soil was the critical level to reach 97% of maximum corn grain yield. To increase suboptimum PSNT concentrations up to the critical threshold, application of 13.8 ± 2.4 kg N ha⁻¹ is needed per 1 mg kg⁻¹ increase in soil NO₃⁻-N concentration based on pre-/at planting N application, but validation is needed for actual sidedress applications. When precipitation was lower or greater than the 30-year mean, the critical PSNT value was 21.5 or 17.4 mg kg⁻¹, respectively. Nonetheless, the 20 ± 2.5 mg NO₃⁻-N kg⁻¹ PSNT critical value is applicable across the state as limited model improvements were achieved when the data were segregated according to soil characteristics, location, corn material, and/or previous crop.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/saj2.70085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144220265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Forest management practices can increase the soil organic carbon sequestration potential of Robinia pseudoacacia plantations in the Loess Plateau","authors":"Zhiyong Li,&nbsp;Baojiang Guo,&nbsp;Yechen Zhou,&nbsp;Tongchuan Li,&nbsp;Ming'an Shao","doi":"10.1002/saj2.70082","DOIUrl":"https://doi.org/10.1002/saj2.70082","url":null,"abstract":"<p>Forest management practices such as thinning and understory removal can directly or indirectly affect soil organic carbon (SOC) content in plantations. However, the effects of plantation management practices in semiarid regions are unclear. The following management practices were used in <i>Robinia pseudoacacia</i> plantations in the Loess Plateau: control treatment (CK), understory removal (UR), thinning, and thinning–understory removal (TUR). This study aimed to determine the effects of different management practices on SOC fractions and stability in plantations. After a 3-year period, we measured soil physicochemical properties and SOC fractions. The results showed that the thinning and understory removal did not significantly change SOC content but did change soil easily oxidized organic carbon (EOC) storage and non-oxidizable organic carbon (NOC) storage, and their proportions in aggregates. Thinning and TUR significantly (<i>p</i> &lt; 0.05) increased EOC in macroaggregates and microaggregates and decreased EOC in silt–clay fractions compared to CK. Soil total nitrogen was the most important factor, explaining 56.9% of the variation in SOC fractions. Soil temperature explained most of the variation in SOC stability (61.6%). Different management practices have a major indirect impact on EOC storage, NOC storage, and the carbon pool management index by affecting soil temperature, soil total nitrogen, and soil water content. Understory removal increased the carbon pool management index without increasing the carbon lability index. As an effective forest management practice, understory removal can increase the potential for SOC sequestration in <i>R. pseudoacacia</i> plantations. Our findings can serve as a reference for the management of plantation forests in the Loess Plateau and for promoting high-quality development.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}