Agricultural Water Management最新文献

{"title":"Investigating the supply–demand gap of farmland ecosystem services to advance sustainable development goals (SDGs) in Central Asia","authors":"Jiangyue Li ,&nbsp;Xi Chen ,&nbsp;Philippe De Maeyer ,&nbsp;Tim Van de Voorde ,&nbsp;Yaoming Li","doi":"10.1016/j.agwat.2025.109419","DOIUrl":"10.1016/j.agwat.2025.109419","url":null,"abstract":"<div><div>Farmland ecosystem services (FESs) are closely intertwined with the achievement of sustainable development goals (SDGs), which aim to maintain ecological balance, enhance agricultural productivity, and increase overall human well-being. However, the FES supply<img>demand gaps in rainfed and irrigated farmlands, as well as their relative contributions to SDGs, remain uncertain. Data from the Coupled Model Intercomparison Project Phase 6 (CMIP6) were employed to determine the spatiotemporal variations in FES supply<img>demand gaps across Central Asia from 1995 to 2099. Then, the natural and socioeconomic factors influencing the coordination of the FES supply and demand were explored. Finally, SDG scores of farmland ecosystems in Central Asia were calculated and predicted under the SSP245, SSP370 and SSP585 scenarios. The research results revealed that grain production and soil conservation services demonstrated a considerable supply surplus and a notable demand deficit and that the water yield exhibited a considerable imbalance (supply&lt;demand) in irrigated farmland. Additionally, we found that population density, temperature, precipitation and topography influenced the supply<img>demand relationships of FESs in Central Asia. Importantly, the contributions of the major FESs to the SDGs were as follows: SDG2 (35.52 %–38.14 %) &gt; SDG15 (34.51 %–36.74 %) &gt; SDG6 (27.88 %–30.65 %). During the 2050 s and 2090 s, the overall SDG index values of agroecosystems in Central Asia were projected to decrease, particularly under the SSP585 scenario (68.11 %–66.37 %). This decline was especially notable for SDG14 and SDG12 in the upper Amu Darya and Syr Darya basins. To promote these SDGs in the above regions and achieve sustainable agricultural development, policymakers should prioritize balancing the supply and demand for water production and sand fixation services.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109419"},"PeriodicalIF":5.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Groundwater drought propagation and the drought resistance capacity in different climatic regions of China","authors":"Shuqi Dong ,&nbsp;Linqi Li ,&nbsp;Zhaoqiang Zhou ,&nbsp;Qiang Fu ,&nbsp;Mo Li ,&nbsp;Ping Xue","doi":"10.1016/j.agwat.2025.109425","DOIUrl":"10.1016/j.agwat.2025.109425","url":null,"abstract":"<div><div>Comprehensively understanding the interactions between different drought types is important for implementing effective drought warnings. However, recent research has focused mainly on propagation among meteorological drought (MD), hydrological drought (HD) and agricultural drought (AD), with a lack of groundwater drought (GD) propagation research. Therefore, this study focused on GD, and the characteristics of MD, AD, and AD in different climatic regions of China were evaluated. The conditional probability was employed to determine the drought propagation threshold under the MD<img>AD<img>GD propagation path, and the dynamic changes in drought propagation thresholds were analyzed to reveal the spatial difference in drought resistance capacity. Finally, the main factors influencing GD were analyzed. The results indicated that (1) the soil water system in Northeast China, the Qinghai<img>Tibet Plateau and northern Northwest China exhibits high drought resistance for MD. Moreover, the groundwater system in Northeast China, North China and the Qinghai<img>Tibet Plateau exhibits notable drought resistance for AD. (2) The propagation threshold for GD in most areas is decreasing, indicating a decreasing trend of GD resistance capacity in most areas, posing greater challenges to GD mitigation. (3) Deep soil moisture provides an important buffer zone, and its variation affects GD. However, in areas rich in hydrothermal resources, the water deficit represented by precipitation and evaporation may play a more important role. The results of this study are helpful for understanding the drought propagation process and formulating drought prevention and mitigation policies.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109425"},"PeriodicalIF":5.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Development and performance evaluation of novel jet self-cleaning for screen filters in drip irrigation systems: More efficient, water-saving, and cleaner","authors":"Zhouyang Qin ,&nbsp;Ningning Liu ,&nbsp;Jinzhu Zhang ,&nbsp;Zhenhua Wang ,&nbsp;Wenyao Liang ,&nbsp;Miao Li ,&nbsp;Jihong Zhang","doi":"10.1016/j.agwat.2025.109424","DOIUrl":"10.1016/j.agwat.2025.109424","url":null,"abstract":"<div><div>Challenges persist in the effectiveness of self-cleaning screen filters, encompassing issues such as facile clogging, prolonged cleaning duration, and filter deformation, significantly impeding their functionality within drip irrigation systems. A comprehensive investigation into cleaning methodologies and filter structures becomes imperative to address these concerns. This study integrated jet-cleaning technology, a widely adopted industrial practice, into the self-cleaning regimen of filters, and jet parameters (nozzle diameter, incident pressure, and nozzle diffusion angle) were investigated for jet cleaning. Based on optimal parameters (Incident pressure of 0.3 Mpa, nozzle diameter of 3 mm, and nozzle diffusion angle of 80°), a novel jet self-cleaning screen filter (JSSF) was designed, and its hydraulic performance and self-cleaning performance were scrutinized through physical experiments and theoretical analyses. Remarkably, the influence of cleaning pressure during self-cleaning surpassed that of inlet sediment content. With increasing cleaning pressure, sewage discharge duration decreased, accompanied by enhanced discharge cleanliness. Meanwhile, the formula for the sewage discharge time and cleanliness was derived and the calculated results matched the experimental results. This innovative filter exhibited a discharge water consumption at least 90 % lower than conventional market-available screen filters. The main findings furnished valuable insights, fostering the application and evolution of water jet cleaning technology in screen filters for drip irrigation systems.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109424"},"PeriodicalIF":5.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Catchment-based approach for water table management with irrigation for cultivated peatlands","authors":"Miika Läpikivi ,&nbsp;Maarit Liimatainen ,&nbsp;Bjørn Kløve ,&nbsp;Hannu Marttila","doi":"10.1016/j.agwat.2025.109427","DOIUrl":"10.1016/j.agwat.2025.109427","url":null,"abstract":"<div><div>Controlled drainage and subsurface irrigation have been proposed to enable shallow-drained agriculture in organic soils and mitigate greenhouse gas (GHG) emissions from intensively cultivated peatlands. However, the effects of current drainage practices on peatland water table depth (WTD) and the potential of using runoff from upstream catchment areas to adjust WTD in northern conditions are still poorly understood. To address these issues, WTD monitoring was initiated on 13 cultivated peatlands with different drainage systems in the flat western coastal region of Finland. Monitoring locations with old subsurface drainage, new subsurface drainage, and open ditch drainage had average WTD of 0.51 m, 0.82 m, and 0.95 m, respectively, during the two monitoring years (11/2022 – 10/2024). For each field, we estimated the size of the upper catchment, median summer total runoff, and mean 7-day summer low flow rate. The water required to reach a 0.3 m target WTD was estimated from peat specific yield. Each 0.1 m decrease in mean WTD was estimated to require of 13.2 mm of additional water. Median summer total runoff from the upper catchment was sufficient to reach any target WTD, but the summer low-flow rate did not fulfil the daily water demand. Most runoff is available during early summer, thus creating a timing challenge with water availability even in region with excess annual precipitation. This highlights the importance of catchment-scale management for GHG mitigation. In this study, we propose a generally applicable framework to link peatland GHG mitigation with water resources and catchment-scale management.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109427"},"PeriodicalIF":5.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Bundling regions to explore synergies and trade-offs among water-wetland-food nexus in Black Soil Granary, China","authors":"Xiaolu Chen ,&nbsp;Ying Guo ,&nbsp;Qingtao Ma ,&nbsp;Yilin Shen ,&nbsp;Xiaolong Zhang ,&nbsp;Shui Yu ,&nbsp;Yanjun Shen","doi":"10.1016/j.agwat.2025.109426","DOIUrl":"10.1016/j.agwat.2025.109426","url":null,"abstract":"<div><div>The China’s Black Soil Granary (CBSG) is vital for national food security in China. Large-scale agricultural reclamation has boosted grain production, however, it has led to the encroachment and shrinkage of wetlands, disrupted the sustainability of water resource and threatened the stability of grain production. Therefore, evaluating the water-wetland-food (WWF) nexus is crucial for balancing agriculture and wetland ecosystems. However, quantifying synergies and trade-offs within the WWF nexus remains challenging due to unclear mechanisms. In this study, a comprehensive WWF evaluation system was proposed to analyze spatiotemporal patterns across 20 prefecture-level cities (2000–2020) using a coupling coordination degree model. Cities were classified into four distinct WWF bundles based on a similar index. The Partial Least Squares Structural Equation Modeling (PLS-SEM) and Redundancy Analysis (RDA) were employed to explore internal and external drivers of changes in the WWF nexus. The Results show that: (1) From 2000–2020, the WWF system transitioned from a wetland-dominated Barely Coordinated bundle to a WWF Intermediate Coordinated Development bundle, indicating progress toward intermediate coordination (0.7–0.79). (2) Increased precipitation positively impacted wetlands through water resources, but rising food security indices compromised wetland security, hindering WWF synergy. (3) External factors, such a precipitation intensity, GDP per capita, NDVI, and urbanization, positively influenced WWF development. (4) Water resources are the core constraints, wetlands ensure sustainability, and food security is the central goal. This study identifies the conflicts between water and ecology within WWF bundles, provides targeted actions for sustainable development, and promotes regional collaboration.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109426"},"PeriodicalIF":5.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Evaluating hydroponics and aquaponics: Comparative insights into sustainability and strawberry quality","authors":"N. Korbee ,&nbsp;B. Bautista ,&nbsp;M. García-Sánchez ,&nbsp;P. Cobos ,&nbsp;J.L. Ferres-García ,&nbsp;F.L. Figueroa ,&nbsp;E. Medrano","doi":"10.1016/j.agwat.2025.109412","DOIUrl":"10.1016/j.agwat.2025.109412","url":null,"abstract":"<div><div>Aquaponics provides a more sustainable alternative to hydroponics by integrating fish farming with plant cultivation, thereby reducing the need for chemical fertilizers and promoting the natural recycling of nutrient waste. This study compared the cultivation of 'Primoris' strawberry plants in two systems: a traditional hydroponic system using agricultural fertilizers and an aquaponic system utilizing effluents from thick-lipped grey mullet (<em>Chelon labrosus</em>) fishponds. Despite the significantly lower concentrations of key nutrients (primarily nitrate and phosphate) in the aquaponic system, total yield exceeded 600 g per plant, with no significant differences between the two cultivation methods. Strawberry leaves from the aquaponic system exhibited higher levels of chlorophyll (Chl <em>a</em>: 1.7 ± 0.15 mg·g⁻¹ FW, Chl <em>b</em>: 0.98 ± 0.09 mg·g⁻¹ FW), carotenoids (1.2 ± 0.09 mg·g⁻¹ FW), and calcium (1.3 %). No differences were observed in photosynthesis, organic carbon, total nitrogen, or organic matter content in the leaves between the two systems. Additionally, anthocyanin content in aquaponically grown strawberries was higher (23.5 ± 4.3 mg PE·100 g⁻¹ FW). Fruit quality parameters (including °Brix, acidity, vitamin C, and firmness) were comparable between the two cultivation systems, as confirmed by a blind sensory test. These findings suggest that aquaponic strawberry cultivation can reduce fertilizer usage without compromising yield, fruit quality, or plant health. This highlights aquaponics as a viable and more sustainable alternative to conventional agriculture, including hydroponic methods.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109412"},"PeriodicalIF":5.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Effect of dynamic pressure and emitter type on irrigation and fertigation uniformity of drip irrigation systems","authors":"Shaobo Xing ,&nbsp;Kexin Du ,&nbsp;Ningning Liu ,&nbsp;Miao Li ,&nbsp;Wenhao Li ,&nbsp;Jihong Zhang ,&nbsp;Feihu Yin ,&nbsp;Jinzhu Zhang ,&nbsp;Zhenhua Wang","doi":"10.1016/j.agwat.2025.109418","DOIUrl":"10.1016/j.agwat.2025.109418","url":null,"abstract":"<div><div>Enhancing the anti-clogging efficacy of emitters within drip irrigation systems through dynamic pressure (DP) is gaining attention. However, DP may affect the irrigation uniformity and fertigation uniformity. The laboratory experiment on irrigation and fertigation uniformity was conducted using the Non-axisymmetric Venturi Injector and urea. The amplitude, cycle time, and waveform of DP were utilized to establish pressure schemes and compared with the constant pressure (CP) of 100 kPa, to evaluate the irrigation and fertigation uniformity of three types of drip tapes. Results indicate that the type of drip tapes has a very significant effect on irrigation uniformity (<em>p</em> &lt; 0.01) and significantly affects the fertilizer application rate uniformity (<em>p</em> &lt; 0.05). The amplitude, cycle time, and waveform of DP don't significantly affect the irrigation uniformity. The irrigation emission uniformity under DP relative to CP exhibited variations from −3.118 % to 1.055 %. Only 4/27 of DP schemes failed to achieve a <em>WEU</em> that classified as 'Excellent', but were still classified as 'Good' when CP was rated as 'Excellent'. DP has a slight effect on the flow rate. The cycle time, and waveform of DP significantly affect the uniformity of fertilization concentration and application rate (<em>p</em> &lt; 0.05). DP enhanced the concentration emission uniformity by 49.885 % and the fertilizer application rate emission uniformity of by 51.629 %, albeit requiring 4.612 % more fertigation time. DP can enable drip systems to maintain good irrigation uniformity while achieving superior fertigation uniformity. To achieve a more uniform irrigation and fertilization, utilizing appropriate parameter combinations of DP tailored to different drip tape types is recommended.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109418"},"PeriodicalIF":5.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Multi-objective optimization of soil water-nitrogen management practice and seeding rate for sustainable soybean production on the Loess Plateau of China","authors":"Zhenqi Liao,&nbsp;Xiaohui Ding,&nbsp;Hongxin Zhang,&nbsp;Hui Zhang,&nbsp;Zhijun Li,&nbsp;Fucang Zhang,&nbsp;Junliang Fan","doi":"10.1016/j.agwat.2025.109414","DOIUrl":"10.1016/j.agwat.2025.109414","url":null,"abstract":"<div><div>Improved soil and crop management practices are essential for enhancing soybean production, but a comprehensive evaluation of agronomic performance, economic benefit and environmental sustainability associated with various soil and crop management practices is still missing. Field experiments were performed on soybean using a split-split plot design on the Loess Plateau of China in 2019 and 2020, with soil water management practice as the main plot (NM: flat cultivation; RF: ridge-furrow cultivation with film mulch; RW: ridge-furrow cultivation with film mulch and supplemental irrigation), nitrogen rate as the sub-plot (N₃₀: 30 kg N ha⁻¹ and N₆₀: 60 kg N ha⁻¹) and seeding rate as the sub-sub plot (D₁₆: 160,000 plants ha⁻¹ and D₃₂: 320,000 plants ha⁻¹). A multi-level multi-objective fuzzy comprehensive evaluation model was established for analysis. The results indicated that the soil water-nitrogen management practice and seeding rate (<em>p</em> &lt; 0.01) as well as the interaction between nitrogen rate and seeding rate significantly (<em>p</em> &lt; 0.01) affected the growth, photosynthetic capacity, grain yield and its components, seed quality, economic benefits and resource use efficiency of soybean. The RWN₃₀D₃₂ treatment achieved the highest ranking for multi-objective optimization in both growing seasons. Compared with the local management strategy (NMN₆₀D₁₆), RWN₃₀D₃₂ significantly (<em>p</em> &lt; 0.05) increased the canopy photosynthetic capacity, biological yield, grain yield, seed protein yield, seed oil yield, net income, ratio of output over input costs, crop water productivity, partial factor productivity of nitrogen and radiation use efficiency by 22.8 %, 66.7 %, 35.9 %, 20.1 %, 23.9 %, 69.8 %, 28.4 %, 29.0 %, 171.8 % and 18.5 %, while it decreased the hundred-grain weight, number of pods, seed protein content, seed oil content, energy use efficiency and carbon productivity by 5.4 %, 34.2 %, 11.6 %, 8.8 %, 20.5 % and 69.0 %, respectively. In conclusion, the optimized management practice exhibited significant improvements agronomic performance, economic benefits and resources use efficiency, which was recommended for sustainable soybean production on the Loess Plateau of China.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109414"},"PeriodicalIF":5.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Potential deficit irrigation adaptation strategies under climate change for sustaining cotton production in hyper–arid areas","authors":"Xiaoping Chen ,&nbsp;Haibo Dong ,&nbsp;Zhiming Qi ,&nbsp;Dongwei Gui ,&nbsp;Liwang Ma ,&nbsp;Kelly R. Thorp ,&nbsp;Robert Malone ,&nbsp;Hao Wu ,&nbsp;Bo Liu ,&nbsp;Shaoyuan Feng","doi":"10.1016/j.agwat.2025.109417","DOIUrl":"10.1016/j.agwat.2025.109417","url":null,"abstract":"<div><div>Affected by climate change and elevated atmospheric CO₂ levels, the efficacy of agricultural management practices is of particular concern in a hyper–arid area. The effects of future climate change on cotton (<em>Gossypium hirsutum</em> L.) yield and water productivity (WP) were assessed under deficit irrigation strategies in China’s southern Xinjiang region. A previously calibrated and validated RZWQM2 model simulated cotton production for two time periods ranging between 2061–2080 and 2081–2100, under automatic irrigation method based on crop plant available water, factorially combined with four irrigation levels (100 %, 80 %, 60 %, and 50 %). Weather data was obtained from ten general circulation models, and two Shared Socioeconomic Pathways were tested. Deficit irrigation under climate change showed a simulated decrease in water use and production of cotton compared to the baseline (1960–2019). For the 2061–2080 period, mean simulated seed cotton yields were 4.43, 4.44, 3.95 and 3.47 Mg ha^–1 (<em>vs.</em> baseline: 4.65, 4.40, 3.58, 2.63 Mg ha⁻¹) with the 100 %, 80 %, 60 % and 50 % irrigation levels. A 3.4 %-28.6 % of decrease (<em>vs.</em> baseline) in seed cotton yield was found under SSP585 scenario in 2081–2100. The 80 %PAW–based irrigation provided the highest WP of 12.8 kg m^–3 and 8.4 kg m^–3 for 2061–2080 and 2081–2100, respectively, comparing to the baseline WP of 0.82 kg m^–3. Under SSP585 for 2081–2100, the simulated WP declined from 0.19 kg m^–3 at 100 % irrigation levels to 0.04 kg m^–3 at 50 % irrigation levels. These projections suggests that adequate irrigation is the key to ensure cotton production and moderate deficit irrigation can be applied to mitigate the negative impacts of climate change on cotton yield in a hyper–arid area.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109417"},"PeriodicalIF":5.9,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Simultaneous retrieval of soil moisture and salinity in arid and semiarid regions using Sentinel-1 data and a revised dielectric model for salty soil","authors":"Leilei Dong ,&nbsp;Weizhen Wang ,&nbsp;Tao Che ,&nbsp;Yuhao Wang ,&nbsp;Xin Huang ,&nbsp;Shengyin Zhang ,&nbsp;Feinan Xu ,&nbsp;Jiaojiao Feng","doi":"10.1016/j.agwat.2025.109410","DOIUrl":"10.1016/j.agwat.2025.109410","url":null,"abstract":"<div><div>Soil moisture and salinity (SMS) are two critical factors in crop growth, and monitoring their dynamic has important scientific value and social benefits for preventing land degradation and improving land productivity. However, the current methodology treats soil moisture and salinity as two independent variables to be estimated separately, completely ignoring their joint influence on the microwave signal. In this paper, the Jingdian irrigated region, which is located in northwestern China, is selected as an example, the contents of soil volumetric water and soil salt are measured separately for different seasons in the research area, and they are also retrieved simultaneously by combining Sentinel-1 data and a revised dielectric model of salty soil. The results demonstrate that the Sentinel-1 data can achieve satisfactory results in the simultaneous retrieval of SMS, with R² values higher than 0.53. The RMSE values in the upward track are less than 0.042 m³/m³ and 3.132 mS/cm, respectively, which are smaller than in the downward track, with the RMSE values less than 0.051 m³/m³ and 3.84 mS/cm, respectively. The average value of soil moisture content in winter is 0.17 m³/m³, which is higher than in spring, with a value of 0.21 m³/m³. The soil salt content increases gradually over the study period, with average values of 1.88 mS/cm in spring and 3.58 mS/cm in winter, respectively. In addition, vegetation, surface roughness, precipitation, and agricultural activities are the main factors affecting the simultaneous retrieval of SMS.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"312 ","pages":"Article 109410"},"PeriodicalIF":5.9,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}