Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
This paper used three plots of paddy field in Wangjiagou small catchment in Fuling District, Chongqing Municipality as a case study. Wangjiagou, located in Three Gorges Reservoir Area, provided a good case in terms of its closeness of surface runoff. The samples of individual rainfall of twelve times and process of two typical individual rainfalls on three plots of sloping paddy field were collected from 2014 to 2015. These samples were used to analyze the influence of spatial pattern of sloping paddy field on the concentration of nitrogen and phosphorus in the surface runoff. The samples of daily runoff in subcatchments in 2010 and 2015 were used to analyze the influence of spatial pattern change of subcatchments' paddy field on the concentration of nitrogen and phosphorus in the surface runoff. The results indicated that the removal rates of TN, NO-N and TP of paddy field at the valley bottom were higher than those in the mid-slopes. The removal rate of TP would be higher if plot size of paddy field at the bottom got bigger. During individual rainfall event, the losses concentration of TN, NO-N and TP in the paddy fields was significantly different among three different spatial patterns during the previous period of heavy rain event, but it became different during the next period of moderate rain event. The two subcatchments' spatial pattern change of paddy field had weakened the intercepting purification ability of nitrogen and phosphorus losses of paddy field in 2015, compared with that in 2010. TN's losses concentration increased significantly during the periods of light and moderate rain event and base flow. TP's losses concentration fluctuated during the event from moderate rain to heavy rain. Hence, increasing the area of paddy field of catchment and optimizing its spatial pattern reasonably were found as effective measures to control agricultural non-point source pollution in the Three Gorges Reservoir Region.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.13227/j.hjkx.201606042 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The application of manure and straw is beneficial for improving the content and stability of DOM in paddy soil.
J Environ Manage
September 2025
College of Resources, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Investigation and Monitoring, Protection and Utilization for Cultivated Land Resources, Ministry of Natural Resources, Chengdu, 611130, China. Electronic address:
While organic manure application effectively increases soil organic carbon (SOC) content, it may elevate greenhouse gas emissions. Crop straw, a widely available agricultural residue, enhances SOC through gradual decomposition. The effect of organic manure combined with crop straw on the organic carbon components of paddy soil is still unclear.
View Article and Find Full Text PDFFerrihydrite level in paddy soil affects inorganic arsenic species in rice grains.
Environ Sci Process Impacts
September 2025
Nebraska Water Center, Part of the Robert B. Daugherty Water for Food Global Institute 2021 Transformation Drive, University of Nebraska, Lincoln, Nebraska 68588-6204, USA.
Rice is consumed by ∼50% of the global population, grown primarily in flooded paddy fields, and is susceptible to arsenic accumulation. Inorganic arsenic, particularly in reduced form (As(III)), is considered the most toxic and is more likely to accumulate in rice grains under flooded systems. We postulate that increased levels of highly reactive iron minerals, such as ferrihydrite, in paddy soils can regulate the bioavailability of arsenic and reduce its uptake by priming iron plaque formation.
View Article and Find Full Text PDFElucidating cooking-driven flavor dynamics of paddy field carp (Cyprinus carpio) using a combination of E-nose, E-tongue, GC-MS and GC-IMS.
Food Chem
September 2025
Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address:
The cooking process exerts a notable influence on the flavor characteristics of fish. E-nose, GC-MS, and GC-IMS technologies were utilized to investigate how three thermal processing methods (steaming, frying, and roasting) alter the volatile odors of paddy field carp (PFC). GC-MS and GC-IMS analyses indicated that the volatile compound compositions of steaming and raw samples were relatively similar.
View Article and Find Full Text PDFIntegrative taxonomy uncovers four novel species of Drawida Michaelsen, 1900 (Clitellata: Moniligastridae) revealing untapped earthworm diversity in India.
Mol Biol Rep
September 2025
Department of Zoology, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, 470003, Madhya Pradesh, India.
Background: The earthworm fauna of India remains inadequately documented, despite its pivotal ecological importance, and there is a pressing need to address this gap. Recognizing this lack of comprehensive documentation, the present study was undertaken to explore and characterize the diversity in previously under-surveyed regions. During systematic surveys in Madhya Pradesh (Central India) and Manipur (North-Eastern India), four novel species of the genus Drawida Michaelsen, 1900 were discovered: D.
View Article and Find Full Text PDFDevelopment of the insecticide oxazosulfyl.
J Pestic Sci
August 2025
Sumitomo Chemical Co., Ltd., Agro & Life Solutions Research Laboratory.
Oxazosulfyl, a novel insecticide originally discovered and developed by Sumitomo Chemical Co., Ltd., belongs to a new chemical class, the sulfyl group, structurally characterized by its ethylsulfonyl moiety.
View Article and Find Full Text PDF