Results 21 to 30 of about 2,316 (222)
Changes in groundwater resources and their influencing factors in Songnen Plain, China
Journal of Groundwater Science and Engineering, 2023 The Songnen Plain is a crucial agricultural area in China, and in the past 20 years, a large number of dry fields have been developed into paddy fields in order to improve land output efficiency.
Qiang Liu +6 more
doaj +1 more source
Detour canal, a civil engineering heritage created through historical struggle for water resources, now provides the habitats for a rare freshwater fish [PDF]
Biodiversity Data JournalThe Ariake catfish, Tachysurus aurantiacus, is a freshwater fish endemic to Kyushu Island, Japan. However, these catfish are now endangered owing to environmental changes.
Yohei Yamasaki +4 more
doaj +3 more sources
Guan'gai paishui xuebao, 2023 【Objective】 Bisphenol compounds of different origins have been found in many terrestrial ecosystems in across China. Their accurate detection is a key to mitigating their impact on the environment. In this paper, we present an improved method to reliably
LUO Huili +3 more
doaj +1 more source
Anales del Jardín Botánico de Madrid, 2015 Morphological characters and molecular sequence data of the plastid-encoded RUBISCO large subunit gen (rbcL) confirmed the first record of Kumanoa mahlacensis (S. Kumano & W.A. Bowden-Kerby) Entwisle, M.L. Vis, W.B. Chiasson, Necchi & A.R.
María Eugenia García-Fernández +2 more
doaj +1 more source
Properties of Humic Acids in Meadow Soils Irrigated with the Slope-and-Flooding System
Agronomy, 2021 The still-advancing soil degradation and the related losses of soil organic carbon stocks due to the limited inflow of organic residues in agro-ecosystems encourage more and more soil protection.
Magdalena Banach-Szott +2 more
doaj +1 more source
Development process and trend of medium and low yield field reconstruction in Shaanxi Province [PDF]
E3S Web of Conferences, 2023 The transformation of medium and low yield grain fields is an important part of cultivated land regulation, which is basically consistent with the requirements of high standard farmland construction. The cultivated land consolidation has experienced from
Lei Na, Li Yanan, Zhang Jing
doaj +1 more source
Laboratory Tests of Water Level Regulators in Ditches of Irrigation Systems
Water, 2022 Observed changes in hydrological conditions indicate the need for economical use of water. This pertains to water management on a national scale, river basins and drainage systems. The outflow of water can be extensively regulated after various forms of retention in the catchment.
Janusz Urbański +5 more
openaire +1 more source
Agronomy, 2023 Excess nitrogen (N) caused by straw returning to paddy fields undergoing flooding irrigation deteriorates the water quality. The purpose of this research was to use both simulated field and pot experiments to explore a new approach using zeolite to ...
Weiyu Hu +3 more
doaj +1 more source
1-D versus 2-D Entropy Velocity Law for Water Discharge Assessment in a Rough Ditch
Entropy, 2018 Water discharge assessment in open channel flow is one of the most crucial issues for hydraulic engineers in the fields of water resource management, river dynamics, ecohydraulics, irrigation, and hydraulic structure design, among others.
Michele Greco, Giovanni Martino
doaj +1 more source