Abstract. When assessing global water resources with hydrological models, it is essential to know about methodological uncertainties. The values of simulated balance components may vary due different spatial and temporal aggregations, reference periods, applied climate forcings, as well the consideration human use, or lack thereof. We analyzed these variations over period 1901–2010 by forcing model WaterGAP 2.2 (ISIMIP2a) five state-of-the-art data sets, including a homogenized version...

Climate changes significantly impact environmental and hydrological processes. Precipitation is one of the most significant climatic parameters its variability trends have great influences on socioeconomic development. We investigate spatio-temporal precipitation occurrence frequency, mean depth, PVI total in China based long-term series from 1961 to 2015. As China's topography diverse affected by strongly, ANUSPLIN can model effect effectively adopted generate interpolation surface....

Water quality monitoring in inland lakes is crucial to ensuring the health and stability of aquatic ecosystems. For regional water environment agencies researchers, remote sensing offers a cost-effective alternative traditional in-situ sampling methods. In this study, we designed convolutional neural network (CNN) based on AlexNet represent relationship between Sentinel-2 images situ levels Lake Dianchi from November 2020 April 2023. The model incorporated an algal bloom extraction algorithm...

The China Meteorological Assimilation Driving Datasets for the Soil and Water Assessment Tool model (CMADS) have been widely applied in recent years because of their accuracy. An evaluation accuracy efficiency (SWAT) CMADS simulating hydrological processes fan-shaped Lijiang River Basin, China, was carried out. Sequential Uncertainty Fitting (SUFI-2) algorithm used parameter sensitivity uncertainty analysis at daily scale. pair-wise correlation between parameters uncertainties associated...

In recent years, with the rapid socio-economic development of Yellow River Delta (YRD), pressure on supply water resources has continued to rise. The oil-based industries also led a series ecological and environmental problems, such as wetland degradation quality deterioration. As an increasing number rivers are getting polluted, resulting in deterioration their quality, monitoring, managing, protecting YRD is particularly important. this study, monitoring data simultaneous Sentinel-2 image...

Artificial lands or islands reclaimed from the sea due to their vast land spaces and air are suitable for construction of airports, harbors, industrial parks, which convenient human cargo transportation. However, settlement process reclamation foundation is a problem public concern, including soil consolidation water recharge. Xiamen New Airport, one largest international airports in China, has been under on marine three years. At present, airport reached second phase construction, occupying...

Abstract Climate change and human activities have an important impact on the changing environment, leading to significant changes in basin water cycle process. The Jialing River Basin, largest tributary of upper Yangtze River, is selected as study area. Three different rainfall datasets, China Meteorological Assimilation Driving (CMAD) dataset, Tropical Rainfall Measuring Mission data, gauged observation were used inputs for MIKE System Hydrological European (MIKE SHE) model. By comparing...

Most urban land use studies lack dynamic analyses and precise temporal resolutions of use. To address this issue, our study introduces a model that incorporates eight indicators function, capturing intensity shifts every 15 min. We establish method for computing these using data. Our has notably enhanced resolution, provides detailed service depictions, integrates real-world attributes, such as building size type. This allows harmonious comparisons between human activity data static...

FractalsAccepted Papers No AccessExact solutions and bifurcation analysis of the time-fractional extended (3+1)-dimensional Kadomtsev-Petviashvili equation with conformable derivativeJing Zhang, Hui Meng, Zhen Zheng, Zenggui WangJing Meng Search for more papers by this author , Zheng Wanghttps://orcid.org/0000-0003-1475-7605 https://doi.org/10.1142/S0218348X25500379Cited by:0 (Source: Crossref) PreviousNext AboutFiguresReferencesRelatedDetailsPDF/EPUB ToolsAdd to favoritesDownload...

Quantifying phosphorus (P) loads from watersheds at a fine scale is crucial for studying P sources in lake or river ecosystems; however, it particularly challenging mountain–lowland mixed watersheds. To address this challenge, we proposed framework to estimate the load grid and assessed its risk surrounding rivers typical watershed (Huxi Region Lake Taihu Basin, China). The coupled three models: Phosphorus Dynamic model lowland Polder systems (PDP), Soil Water Assessment Tool...

Background Insomnia is often accompanied by depression and anxiety, which can seriously affect people’s quality of life. Cognitive behavioral therapy for insomnia (CBT-I) the first-line treatment, but existing CBT-I ignores intervention anxiety-depressive symptoms, has poor efficacy due to lack artificial support, compliance, inability spread widely high dropping rate. A balance needed between convenience efficiency web-based technology patient needs. Again in this context, an online WeChat...

Yongding River is the largest river flowing through Beijing, capital city of China. In recent years, Basin (YDRB) has witnessed increasing human impacts on water resources, posing serious challenges in hydrological and ecological health. this study, remote sensing techniques statistical time series approaches for studies were combined to characterize dynamics driving factors reservoir extents YDRB during 1985–2016. First, 107 Landsat 4, 5, 7 8 images used extract surface 1985–2016 using a...

Water supply is one of the most critical factors for food security in many parts world, and balance water demand ensures sustainability resources. The resources carrying capacity (WRCC) can effectively evaluate state sustainable development Taking Beijing, which severely lacking resources, as an example, five-element subtraction set pair potential, logistic, Technique Order Preference by Similarity to Ideal Solution evaluation models (TOPSIS) were comprehensively compared assessed identify a...

Abstract With the recent development of distributed hydrological models, use multi‐site observed data to evaluate model performance is becoming more common. Distributed have many advantages, and at same time, it also faces challenge calibrate over‐do parameters. As a typical model, problems exist in Soil Water Assessment Tool (SWAT) parameter calibration. In paper, four different uncertainty approaches – Particle Swarm Optimization (PSO) techniques, Generalized Likelihood Uncertainty...

Abstract Evapotranspiration (ET) is a key variable in hydrologic cycle that directly affects the redistribution of precipitation and surface balance. ET measurements with high temporal resolution are required for coupling models highly dynamic processes, e.g., hydrological land processes. The Haihe River Basin focus China’s industrial base it one three major grain-producing regions within country. However, this area facing serious water resource shortages pollution problems. present study...

Parks are an important component of the green infrastructure in cities. They provide multiple benefits for residents’ life. Due to uneven spatial distribution parks, it is necessary evaluate disparity about access parks. The two-step floating catchment area method suitable measuring accessibility urban However, few studies have noticed representative entrances especially adding them into process measurements. often determined by road speed and empirical travel time. In this article, impact...

Automatic classification of light detection and ranging (LiDAR) data in urban areas is great importance for many applications such as generating three-dimensional (3D) building models monitoring power lines. Traditional supervised methods require training samples all classes to construct a reliable classifier. However, complete are normally hard costly collect, common circumstance that only class interest available, which traditional may be inappropriate. In this study, we investigated the...

Hydrologic models are essential tools for understanding hydrologic processes, such as precipitation, which is a fundamental component of the water cycle. For an improved and evaluation different precipitation datasets, especially their applicability modelling, three kinds products, CMADS, TMPA-3B42V7 gauge-interpolated compared. Two (IHACRES Sacramento) applied to study accuracy types products on daily streamflow Lijiang River, located in southern China. The calibrated separately with...

Urban areas involve different functions that attract individuals and fit personal needs. Understanding the distribution combination of these in a specific district is significant for urban development cities. Many researchers have already studied methods identifying dominant district. However, degree collection representativeness function are controlled not only by its number but also outside this other functions. Thus, study proposed quantitative method to identify functions, using Fisher’s...

Remote sensing retrieval is an important technology for studying water eutrophication. In this study, Guanting Reservoir with the main supply function of Beijing was selected as research object. Based on measured data in 2016, 2017, and 2019, Landsat-8 remote images, concentration distribution chlorophyll-a were inversed. We analyzed changes reservoir reasons effects. Although decreased gradually, it may still increase. The amount stability storage, water, nitrogen phosphorus change are...