IF 5.4 1区农林科学

Catena Pub Date : 2025-05-05 DOI: 10.1016/j.catena.2025.109119

Margarita Caballero , Matthew N. Waters , Montserrat Amezcua , Ana Carolina Ruiz-Fernández , Itzel Sigala , Javier Alcocer

{"title":"Recent human-induced ecological changes in a Neotropical karst lake of southern Mexico","authors":"Margarita Caballero , Matthew N. Waters , Montserrat Amezcua , Ana Carolina Ruiz-Fernández , Itzel Sigala , Javier Alcocer","doi":"10.1016/j.catena.2025.109119","DOIUrl":"10.1016/j.catena.2025.109119","url":null,"abstract":"<div><div>Lake eutrophication causes aquatic ecosystem changes that can be difficult to trace without a long-term perspective on water quality variables. This paper presents a study of a sediment core collected from Lake Montebello, which yielded such a long-term perspective of trophic state changes. We assumed that microfossil assemblages in the sediment had remained stable over time, as this lake is considered “pristine”. However, three distinctive lake periods over the last century were identified, with rapid environmental changes occurring ∼1960 and 2007–2010. Initially the lake was ultraoligotrophic (period A, 1930–1960), but it transitioned to oligo − mesotrophic conditions (period B, 1960 – 2010) and developed a dense bottom vegetation cover as erosion increased. Fire events during the 1998 “El Niño” and deforestation occurring between 2007 and 2010 increased lake turbidity and reduced light penetration, causing a decline in bottom vegetation cover and promoting diatom and testate amoebae species turnover. The landscape stabilized after ∼2010 and lake productivity declined, but the diatom community shifted from periphytic to pelagic dominance and from larger to smaller taxa, better suited to nutrient-limited, warmer conditions (period C). During the last century, changes in sediment and nutrient loadings altered the trophic status and functional diversity of this lake, and its limnological history is far from “pristine”. Climate warming likely contributed to reduced ecosystem resilience and favored species replacement.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109119"},"PeriodicalIF":5.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erosion processes of lahar travelling on volcanic sediments: Insights from the physical and numerical modeling 火山沉积物上泥流的侵蚀过程：来自物理和数值模拟的见解

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-05 DOI: 10.1016/j.catena.2025.109090

Shengwu Qin , Jiangfeng Lv , Shuangshuang Qiao , Junjun Chen , Feng Wan , Jingyu Yao , Guangjie Li , Lingshuai Zhang

{"title":"Erosion processes of lahar travelling on volcanic sediments: Insights from the physical and numerical modeling","authors":"Shengwu Qin , Jiangfeng Lv , Shuangshuang Qiao , Junjun Chen , Feng Wan , Jingyu Yao , Guangjie Li , Lingshuai Zhang","doi":"10.1016/j.catena.2025.109090","DOIUrl":"10.1016/j.catena.2025.109090","url":null,"abstract":"<div><div>Lahars can significantly increase in scale and damage potential through the erosion of volcanic sediments. However, limited understanding of the erosion processes involved constrains the ability to predict lahar activity trends. We conducted flume experiments and numerical simulations to study the erosion processes of lahars on volcanic sediments from macroscopic and microscopic perspectives. Lahar erodes bed particles through four modes: grain by grain erosion, local integral erosion, upwelling erosion, and headward erosion. The upwelling of pumice notably enhances the erosion intensity of lahars, as demonstrated by both flume experiments and CFD-DEM numerical simulations. We analyzed the micro-motion characteristics of erodible bed particles using CFD-DEM. Compared to debris particles, the movement trajectory of pumice particles is less influenced by the flow velocity. The streamwise velocity of pumice particles generally shows an increasing trend, while their vertical velocity initially increases sharply, corresponding to the upwelling process. Before debris particles leave the erodible bed, their streamwise velocity first increases and then decreases, with their vertical velocity alternating between positive and negative values. The longitudinal erosion processes of the erodible bed can be summarized as follows: pumice upwelling, the formation of erosion pits, the growth of erosion pits, an increase in collision stress, the downstream tends to be smooth, and the upstream experiences headward erosion. Laterally, the nearly vertical channel banks formed by erosion continuously supply material to the channel, resulting in the gradual widening of the erosion channel and the lateral shift of the erosion platform. This research on the erosion processes provides a scientific reference for predicting and assessing lahar disasters.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109090"},"PeriodicalIF":5.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Radiocarbon in soil organic carbon and soil pore space CO2 in sub-humid to semi-arid regions of western India: Implications to tropical soil carbon dynamics 印度西部半湿润至半干旱区土壤有机碳和土壤孔隙CO2中的放射性碳：对热带土壤碳动态的影响

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-03 DOI: 10.1016/j.catena.2025.109100

Ranjan Kumar Mohanty , Rahul Kumar Agrawal , A. Shivam , Amzad Hussain Laskar

{"title":"Radiocarbon in soil organic carbon and soil pore space CO2 in sub-humid to semi-arid regions of western India: Implications to tropical soil carbon dynamics","authors":"Ranjan Kumar Mohanty , Rahul Kumar Agrawal , A. Shivam , Amzad Hussain Laskar","doi":"10.1016/j.catena.2025.109100","DOIUrl":"10.1016/j.catena.2025.109100","url":null,"abstract":"<div><div>CO<sub>2</sub> emitted from soil to the atmosphere is one of the largest components of terrestrial carbon exchange. Therefore, it is important to understand soil organic carbon (SOC) cycling and factors governing it. Radiocarbon (<sup>14</sup>C) in SOC and soil pore space CO<sub>2</sub> (soil CO<sub>2</sub>) is a powerful tool to determine SOC residence time and identify the pool of organic matter contributing to CO<sub>2</sub> release. A combined analysis of <sup>14</sup>C in SOC and soil CO<sub>2</sub> offers a comprehensive understanding of the influence of climate and soil properties on the SOC cycling. We measured <sup>14</sup>C in SOC and soil CO<sub>2</sub> from surface to a depth of ∼ 120 cm in agricultural and forest lands in sub-humid to semi-arid regions of Gujarat, western India. The SOC content in the top layers (0–10 cm) ranges from 0.001 to 0.5 % in agricultural lands and from 0.9 to 3.3 % in forest sites, which decreases to 0.001–0.02 % and 0.05–0.5 % at a depth of ∼ 100 cm for the respective soil types. The lower SOC content in agricultural lands is attributed to carbon loss due to tillage practices. We estimated that ∼ 90 % of the SOC has been depleted from the agricultural lands. The mean residence time (MRT) of SOC is about a century at the surface (0–10 cm) and increases with depth, reaching 1300 to 10000 years at a depth of ∼ 100 cm. MRT is lower in forest soils than in agricultural lands, indicating faster cycling of SOC in forests. MRT decreases with decreasing rainfall and its dependence on air temperature in agricultural lands is not obvious. Soil CO<sub>2</sub> throughout the profile is mostly modern, primarily originating from root respiration and fresh organic matter decomposition, with less contribution from older SOC present in different soil horizons.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109100"},"PeriodicalIF":5.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long- to short-term evolution of the beach-dune systems along the physiographic unit Punta Penna–Punta Pietre Nere (Central Adriatic coast, Italy) 沿着Punta pena - Punta Pietre Nere（意大利亚得里亚海中部海岸）地貌单元的海滩-沙丘系统的长短期演变

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-03 DOI: 10.1016/j.catena.2025.109102

Grazia Dilauro , Giorgio Anfuso , Gianluigi Di Paola , Margherita Ciccaglione , Carmen M. Rosskopf

{"title":"Long- to short-term evolution of the beach-dune systems along the physiographic unit Punta Penna–Punta Pietre Nere (Central Adriatic coast, Italy)","authors":"Grazia Dilauro , Giorgio Anfuso , Gianluigi Di Paola , Margherita Ciccaglione , Carmen M. Rosskopf","doi":"10.1016/j.catena.2025.109102","DOIUrl":"10.1016/j.catena.2025.109102","url":null,"abstract":"<div><div>Coastal areas, particularly low-lying sandy coasts, represent zones of high fragility mainly due to the increasing anthropogenic pressure and the impacts of ongoing climate change. This paper analyses the long- to short-term evolution of the beach-dune systems of a 60 km long, sandy sector of the Central Adriatic coast. The study area was analysed by means of aerial photos, orthophotographs and satellite images dating from 1954 to 2022, using both the littoral cell approach and the division into coastal segments based on morphological and administrative elements. Its evolution was compared with the progressive coastal armouring and wave climate characteristics and trends.</div><div>Shoreline erosion increased over the past three decades, with the period 1989–2000 resulting to be the most critical one. This period was characterized by continuous and energetic storms that, despite the extensive presence of coastal defence structures (42 %), favoured shoreline retreat especially in the southern sectors, with a maximum average rate of −3.28 m/y.</div><div>Although the period between 2012 and 2022 was characterized by overall positive shoreline and dune foot trends, the southernmost sector of the study area was significantly affected by erosion, with shoreline and dune foot rates of −1.17 m/y and −0.54 m/y respectively, highlighting the great relevance of ongoing erosion processes.</div><div>The data acquired on the shoreline evolution and current coastal dynamics of the study area provide a solid knowledge base for coastal management by the competent municipalities and regions. They also suggest the opportunity to further investigate several aspects, such as the relationships between coastal dynamics and the watersheds that feed the study coast, the effectiveness of defence structures, and the current vulnerability of the entire physiographic unit to coastal erosion.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109102"},"PeriodicalIF":5.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial keystone taxa and network complexity, rather than diversity, sustain soil multifunctionality along an elevational gradient in a subtropical karst mountain 亚热带喀斯特山区沿海拔梯度维持土壤多功能性的关键微生物类群和网络复杂性，而非多样性

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-03 DOI: 10.1016/j.catena.2025.109115

Weixue Luo , Peng Wang , Jinchun Liu , Jianping Tao

{"title":"Microbial keystone taxa and network complexity, rather than diversity, sustain soil multifunctionality along an elevational gradient in a subtropical karst mountain","authors":"Weixue Luo , Peng Wang , Jinchun Liu , Jianping Tao","doi":"10.1016/j.catena.2025.109115","DOIUrl":"10.1016/j.catena.2025.109115","url":null,"abstract":"<div><div>Karst mountain ecosystems are among the most climate-sensitive landscapes globally, yet the relationship between subsurface microbial communities and ecosystem multifunctionality (EMF) in these fragile environments remains poorly understood. Here, we investigated soil microbial attributes—diversity, keystone taxa, and network complexity—along an elevational gradient in a karst mountain ecosystem to identify key drivers of soil EMF. Our results revealed that elevation significantly influenced microbial community composition and soil EMF. Specifically, microbial diversity decreased with increasing elevation, whereas microbial network complexity, keystone taxa, and soil EMF increased along the elevation gradient. Compared to microbial diversity, microbial network complexity and keystone taxa exhibited stronger positive effects on soil EMF. Notably, the positive effects of network complexity and keystone taxa on soil EMF decreased with increasing threshold levels of EMF, yet keystone taxa retained a significant positive effect even at the highest threshold (75%). Moreover, annual mean temperature and soil pH significantly influenced microbial characteristics, which in turn affected soil EMF. These findings highlight the pivotal roles of microbial keystone taxa and network complexity in maintaining soil EMF under environmental change, especially in high-stress conditions. These findings provide not only a framework for predicting ecosystem function in karst mountain ecosystems but also valuable insights for the management and conservation of other fragile ecosystems worldwide.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109115"},"PeriodicalIF":5.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nitrogen deposition reshapes biological nitrogen fixation and soil diazotrophic communities across urban and rural forests 氮沉降重塑城乡森林生物固氮和土壤重氮营养群落

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-03 DOI: 10.1016/j.catena.2025.109101

Ruoxian Fu , Dianlong Ge , Jinsheng Li , Yuanchun Yu , Zhuangzhuang Qian , Xiaoniu Xu , Chunhui Li , Biao Zhu , Xiao Tao

{"title":"Nitrogen deposition reshapes biological nitrogen fixation and soil diazotrophic communities across urban and rural forests","authors":"Ruoxian Fu , Dianlong Ge , Jinsheng Li , Yuanchun Yu , Zhuangzhuang Qian , Xiaoniu Xu , Chunhui Li , Biao Zhu , Xiao Tao","doi":"10.1016/j.catena.2025.109101","DOIUrl":"10.1016/j.catena.2025.109101","url":null,"abstract":"<div><div>Urban expansion on a global scale exposes the semi-natural environment to higher nitrogen (N) deposition disturbances with multiple uncertain consequences. One uncertainty is how N inputs impact biological N fixation (BNF), a crucial process supporting the entrance of N into terrestrial ecosystems through living organisms. Based on 5-year field experiments with different levels of N addition (0, 50 and 100 kg N ha<sup>−1</sup> yr<sup>−1</sup>) in forests along an urban–rural gradient, we systematically examined the direct and indirect effects of N addition on soil BNF and its potential mechanisms. We found that soil BNF activity was drastically reduced (dropped by 94.2 % to 96.5 %) in both urban and suburban forests compared with the rural forest without additional N application. Nitrogen addition treatments had no effect on BNF activity in the urban forest, but significantly decreased BNF activity in the rural forest by over 50 % with low N addition. Further analysis revealed that reductions in BNF activity were associated with changes in the composition of diazotrophic communities, favoring facultative diazotrophs that are detrimental to soil BNF. Soil acidification was primarily responsible for limiting soil BNF and associated microbes in the urban forest. These findings indicate that external N inputs primarily pose a threat to soil diazotrophic communities and their N fixation function in the rural forest, but this negative effect does not persist in urban forests. Given the insensitivity of urban forests to external N inputs, it is essential to integrate human activity and land use contexts into soil behavior and N cycling predictions to better understand global N deposition effects.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109101"},"PeriodicalIF":5.4,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fungal diversity shapes ecosystem multifunctionality in alpine grasslands under different herbivore assemblages: A case study from the Qinghai-Tibetan Plateau 不同草食动物组合下高寒草原真菌多样性塑造生态系统多功能性——以青藏高原为例

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-02 DOI: 10.1016/j.catena.2025.109109

Yuzhen Liu , Caidi Li , Xinquan Zhao , Wenting Liu , Xiaoxia Yang , Weidong Lv , Shengnan Sun , Quan Cao , Quanmin Dong

{"title":"Fungal diversity shapes ecosystem multifunctionality in alpine grasslands under different herbivore assemblages: A case study from the Qinghai-Tibetan Plateau","authors":"Yuzhen Liu , Caidi Li , Xinquan Zhao , Wenting Liu , Xiaoxia Yang , Weidong Lv , Shengnan Sun , Quan Cao , Quanmin Dong","doi":"10.1016/j.catena.2025.109109","DOIUrl":"10.1016/j.catena.2025.109109","url":null,"abstract":"<div><div>Ecosystem multifunctionality, defined as the capacity of ecosystems to simultaneously sustain multiple functions and services, is a key indicator of ecological sustainability. Grazing represents the primary land-use practice in the alpine grasslands of the Qinghai-Tibetan Plateau; however, the effects of different herbivore assemblages on ecosystem multifunctionality remain insufficiently understood. In this study, we conducted a series of precisely controlled grazing experiments to assess the effects of different herbivore assemblages—yak-only, Tibetan sheep-only, and mixed yak–sheep grazing at varying ratios—on ecosystem multifunctionality in alpine grasslands. Our results demonstrate that, compared with fenced controls, moderate-intensity mixed grazing significantly enhanced ecosystem multifunctionality, with the greatest improvement observed at a yak-to-sheep ratio of 1:2 (+22.63 %). Key drivers of multifunctionality included plant, bacterial, and fungal Shannon diversity, fungal β-diversity, and soil properties such as total nitrogen, total phosphorus, and bulk density. Notably, grazing primarily promoted multifunctionality indirectly by enhancing fungal community diversity, which accounted for 39.53 % of the observed variation. These findings suggest that optimizing grazing strategies—particularly implementing mixed yak–sheep grazing at a 1:2 ratio under moderate intensity—can effectively balance ecological and economic objectives, supporting the sustainable development and adaptive management of alpine grassland ecosystems.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109109"},"PeriodicalIF":5.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep learning delineates alluvial fans driven by topographic knowledge and imagery 深度学习描述了由地形知识和图像驱动的冲积扇

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-02 DOI: 10.1016/j.catena.2025.109089

Tao Huang , Haoyu Cao , Liyang Xiong

{"title":"Deep learning delineates alluvial fans driven by topographic knowledge and imagery","authors":"Tao Huang , Haoyu Cao , Liyang Xiong","doi":"10.1016/j.catena.2025.109089","DOIUrl":"10.1016/j.catena.2025.109089","url":null,"abstract":"<div><div>An alluvial fan is one of the most typical sedimentary landforms formed by fluvial and depositional geomorphic processes on the Earth’s surface. Extracting the boundaries of alluvial fans is a key procedure for understanding their formation mechanisms and geomorphic processes. In this study, we proposed a method that integrates the topographic characteristics of alluvial fans from a Sentinel-2 imagery and SRTM digital elevation model into an improved deep-learning segmentation model (Mask R-CNN) for alluvial fan extraction. We tested the validity of our method in two representative sample areas in the Great Basin and Mojave Desert regions of the western United States. Results indicated that the method can achieve satisfactory extraction results in these areas and has superior performance over traditional methods, with an F1-score of 91.53% versus 70.92% (mean-shift segmentation) and 70.38% (radial profile). In addition, the relationship between alluvial fans and their corresponding catchments was examined, suggesting that catchment area, slope, relief and rainfall patterns influence sediment transport, deposition and the geomorphological evolution of alluvial fans. Furthermore, the microtopographic features of alluvial fans revealed different degrees of geomorphic development between the study areas. The difference may be primarily attributed to differences in erosion intensity and deposition frequency. Finally, by designing terrain factors that align with specific landform characteristics, the proposed method can be extended to the extraction of other complex landforms.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109089"},"PeriodicalIF":5.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Farmland abandonment: Consequences for soil, vegetation, water, and landscape 农田废弃：对土壤、植被、水和景观的影响

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-02 DOI: 10.1016/j.catena.2025.109087

E. Nadal-Romero, N. Lana-Renault, M. Llena, E. Cammeraat

引用次数: 0

A matrix for estimating the unfrozen water content of freezing soils 估算冻土未冻水含量的矩阵

IF 5.4 1区农林科学

Catena Pub Date : 2025-05-02 DOI: 10.1016/j.catena.2025.109050

Jun Bi , Guoxu Wang , Wenxuan Mu , Haiyan Wen , Wansheng Pei , Qiyong Zhang , Sheng Yang , Mengyao Mao , Gaochao Lin , Chong Wang

{"title":"A matrix for estimating the unfrozen water content of freezing soils","authors":"Jun Bi , Guoxu Wang , Wenxuan Mu , Haiyan Wen , Wansheng Pei , Qiyong Zhang , Sheng Yang , Mengyao Mao , Gaochao Lin , Chong Wang","doi":"10.1016/j.catena.2025.109050","DOIUrl":"10.1016/j.catena.2025.109050","url":null,"abstract":"<div><div>The unfrozen water content is a vital soil parameter for freezing soils. Previous studies have developed numerous models to simulate the relationship between the unfrozen water content and temperature, but most models are only applied to fit the experimental data. In this study, a matrix containing 16 estimation models was developed to estimate the unfrozen water contents at different temperatures based on the combination of the Kozlowski model, 4 freezing point (<em>T</em><sub>f</sub>) models and 4 residual gravimetric unfrozen water content (<em>w</em><sub>r</sub>) models. The 16 estimation models in the matrix were evaluated for 56 soils, and the L2021-K2007 model (combination of the Liang 2021 <em>T</em><sub>f</sub> model and Kozlowski 2007 <em>w</em><sub>r</sub> model) provided optimal results. Also, the estimation models containing the Liang 2021 <em>T</em><sub>f</sub> model perform better than those containing the other <em>T</em><sub>f</sub> models, while the estimation models containing the Kozlowski 2007 <em>w</em><sub>r</sub> model perform better than those containing the other <em>w</em><sub>r</sub> models. The <em>T</em><sub>f</sub> models and <em>w</em><sub>r</sub> models have different effects on the estimation results. At higher temperatures, the T<sub>f</sub> models have more significant effects on the estimation results than the <em>w</em><sub>r</sub> models. In contrast, at lower temperatures, the <em>w</em><sub>r</sub> models have larger influences on the estimation results than the <em>T</em><sub>f</sub> models. The matrix has the potential to improve the estimation of the unfrozen water content and provide guidance for the development of the unfrozen water content estimation models.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"256 ","pages":"Article 109050"},"PeriodicalIF":5.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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