Abstract The redistribution of hillslope soil water during and after rainstorms is affected by properties topography. Therefore, understanding how soil‐terrain attributes affect the volumetric content (VWC) distribution under various catchment storages a prerequisite for accurate hydrological modeling. Herein, relationships between VWC were examined in steep (average slope = 60%), forested, zero‐order catchment. Detailed topography, properties, runoff, high frequency (6‐min) moisture data...

The temporally asymmetric effects of vegetation growth response to climate, e.g., time-lag, time-accumulation, and their combination effects, have been widely reported. However, elevation-dependent spatial distribution patterns in alpine basins the Qinghai-Tibet Plateau remain unclear, especially different seasons. This study investigated temporal precipitation temperature throughout whole growing season its two subphases (growth phase senescence phase) Lhasa River Basin (LRB). results...

Extracting drainage networks from a digital elevation model (DEM) with massive cells is time-consuming due to depressions and flats, where flow paths the outlet cannot be extracted using downslope gradients. Algorithms based on priority queue are an efficient solution for this task. However, existing algorithms depend insertion order in determine directions equal elevation. This dependency increases sorting time queue. Our study developed improved algorithm (referred as DZFlood), adopting...

Topography strongly controls soil moisture redistribution in forested mountain catchments. However, how terrain-related regulates the distribution of Moso bamboo (Phyllostachys edulis) remains unclear. In this study, we addressed occurrence and by examining water dynamics at Hemuqiao Experimental Station southeastern China. The study was initially conducted on a steep 0.31-ha hillslope. Detailed topography, runoff, high frequency (6-min) data were collected. Both linear (all-possible-subset...

Soil dielectric sensors have been widely used to obtain real-time soil moisture data, which are important for water resource management. However, soluble salts in the significantly affect accuracy of these sensor measurements. Therefore, it is crucial select suitable measurements at different salinity levels. Eight mainstream (EC-5, 5TE, Teros12, Hydra-probe II, TDR315L, TDR315H, TDR305H, and CS655) were selected tested four levels (EC

Abstract In this paper, a multilevel correction scheme is proposed to solve the Steklov eigenvalue problem by nonconforming finite element methods. With new scheme, accuracy of eigenpair approximations can be improved after each step which only needs source on finer space and an coarsest space. This increase overall efficiency solving problems method. Furthermore, as same direct methods, method also produce lower-bound eigenvalues.

The quality of strawberry fruits is a key factor in consumer choice. This study investigated the effect potassium coupled with water and nitrogen on multiple categories over two growing seasons (from August 2021 to April 2022 2023) China, aid determination fertilizer decisions based consumer-orientation. In particular, composite quadratic orthogonal rotation design three factors five levels was adopted characterize volume content (W), (N) (K). Twelve indicators at harvest stages were...

Abstract Headwater storage–discharge ( S–Q ) remains one of the least understood processes, and there is renewed interest in relation. How well can relation be interpreted mechanistically using geometric factors? In this paper, hillslope storage Boussinesq kinematic wave equation were adopted to guide theoretical derivations. Analytical solutions derived based on hsKW for nine idealized aquifers, which subdivided into two groups, i.e. aquifers with exponential width function (C1) Gaussian...

The implicit Monte Carlo (IMC) method can exhibit teleportation error in problems with strong coupling between radiation and material. Source tilting is a technique to reduce the by representing emission source as linear or higher order function each zone. In this paper, we propose new spatial reconstruction scheme for term method. takes into account of propagation direction photon. A spatially continuous representation be obtained reconstruction. We demonstrate that capture asymptotic...

In order to reveal mining pressure in the workface using a gangue backfilling method and caving Pingdingshan No. 12 coal mine, this paper establishes numerical analysis model for different advance lengths of based on geological conditions. By models field measurements, following conclusions about behavior mixed were drawn. (1) As mixing face advances, its goaf is continuously compacted. Therefore, vertical stress roof increases gradually. (2) Because has certain supporting effect roof, peak...

Abstract In humid hilly regions, macropore preferential flow in soils dominates the distribution of event water, thereby influencing generation and development runoff. However, mechanism how soil functions on drainage matrix absorption remains poorly understood due to complex water dynamics a multi‐porosity subsurface network. this study, based source‐responsive method that divides into diffusive domains, allocation ratio infiltrated macropores recharging were derived it was coupled with...

A cascadic multigrid method is proposed for eigenvalue problems based on the multilevel correction scheme. With this new scheme, an problem finest space can be solved by smoothing steps a series of finite element spaces and solving coarsest space. Choosing appropriate sequence number steps, optimal convergence rate with computational work arrived. Some numerical experiments are presented to validate our theoretical analysis.

A local and parallel algorithm based on the multilevel discretization is proposed in this paper to solve eigenvalue problem by finite element method. With new scheme, solving finest grid transferred solutions of problems coarsest mesh a series boundary value using algorithm. The computational work each processor can reach optimal order. Therefore, type method improves overall efficiency problem. Some numerical experiments are presented validate

Our knowledge of the similarities and differences in ecological systems is vital to understanding co-evolution factors. This study proposes a multi-dimensional hydro-climatic similarity classification framework based on Budyko theory. The employs dryness index (DI), evaporative (EI), an empirical parameter (ω) further sub-divide four climatic zones (humid, semi-humid, semi-arid, arid zones) terms DI. A criterion that define between stations proposed verify obtain optimal results. method...

Abstract A new eight‐direction algorithm (iFAD8) for the simulation of drainage directions on grid digital elevation models (DEMs) is presented. In this algorithm, a flexible triangular facet construction technique (ND∞) developed to provide local ranging continuously from 0° 360°. Subsequently, flow aggregation using global deviations proposed simplify paths into nondispersive format. Another (FAD8) accompanying iFAD8 also presented, which uses D∞ as directions. Then FAD8, iFAD8, and three...