نتایج جستجو برای: erosivity

تعداد نتایج: 371  

Journal: :Catena 2022

Soil erosion is time compressed into a number of episodic erosive rainfall events with an associated potential to detach and transport soil particles (rainfall erosivity), each possessing unique spatial temporal characteristics. Rainfall erosivity in Europe follow extreme value distributions which limited rainstorms dominate the long-term budget available energy. To combat targeted manor, timel...

Journal: :Soil Science Society of America Journal 1997

2002
Katharina Helming

*Katharina Helming, Center for Agricultural Landscape and Land Use Research (ZALF), Eberswalder Str. 84, D-15374 Muencheberg, Germany. *Corresponding author: [email protected] ABSTRACT The kinetic energy of rainstorms plays a paramount role in surface sealing, runoff, and erosion processes. Typically, the kinetic energy rate is calculated based on terminal velocity of vertically falling raindrop...

Journal: :Journal of Hydrology 2022

• Global Rainfall erosivity increase on average 26.2–28.8% (2050) and 27–34.3% (2070). Use of 19 climate models three RCP scenarios (2.6, 4.5, 8.5) for 2050 2070. 80–85% global land surface will have an increasing trend in rainfall erosivity. Large projected changes are expected the Northern Hemisphere. Climate change drive high erosion rates. The erosive force (rainfall erosivity) is a major d...

2018
Xianghu Li Xuchun Ye

Soil erosion is one of the most critical environmental hazards in the world. Understanding the changes in rainfall erosivity (RE) and erosivity density (ED), as well as their affecting factors, at local and catchment scales in the context of climate warming is an important prerequisite of soil erosion prevention and soil loss risk assessment. The present study identified the variability and tre...

Journal: :Science of The Total Environment 2017

Journal: :Land 2023

This study examines the spatiotemporal variations of rainfall erosivity in Hengduan Mountains, known for their rugged terrain and high potential soil erosion risks, over past 30 years. Additionally, it investigates changing trends between 2025 2040 under Sustainable Development Pathway 2–4.5 (SSP2–4.5), using four Global Climate Models (GCMs) based on Coupled Model Intercomparison Project phase...

2002
Liu Baoyuan

A model was developed for estimating average annual soil loss by water on hillslope for cropland, which is called Chines Soil Loss Equation (CSLE). Six factors causing soil loss were evaluated based on soil loss data collected from experiment stations covering most regions of China and modified to the scale of Chinese unit plot defined. The model uses an empirical multiplicative equation, A=RKL...

Journal: :Sustainability 2022

This paper, based on daily rainfall erosivity model, ArcGIS, trend analysis and Kriging interpolation method, analyzed the spatial temporal distribution characteristics of in Luojiang River Basin China, then explored influence relationship between land use change types potential. The results showed following: (1) from 1980 to 2019, range multi-annual was 14,674–15,227 MJ·mm/ (hm2·h), with an av...

2007
G. ARONICA V. FERRO

Abstract Following the results of a study carried out for the neighbouring Sicilian region, this paper reports a study of the applicability of the annual value, F , of the Arnouldus index to represent the erosion risk in Calabrian region. Firstly, By using 214 values of the mean annual value of the erosivity index, FF, and a Kriging interpolation method, an isoerosivity map is plotted. Then, in...

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