检索范围：
排序： 展示方式：
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 607-626 doi: 10.15302/J-FASE-2023517
As the common features of agroecosystems, ditches and ponds benefit the irrigation and drainage, as well as intercepting non-point source pollutants. However, most ditch-pond studies have been conducted in lowland areas. To test this source-sink assumption in upland areas, this study made observations on the ecological function of the ditch and pond system in a typical catchment in China. First, the changes in ponds in the catchment were analyzed using high-resolution remote sensing data. Then, the migration of agricultural pollutants in ditches and ponds were analyzed by field sampling and laboratory detection. The results showed that over the past 15 years the length of ditches in the catchment and the number of small ponds (< 500 m2) have increased by 32% and 75%, respectively. The rate of change in nutrient concentrations in the ditches and ponds were mostly from −20% to 20%, indicating ditches and ponds can be both sources and sinks for agricultural pollutants. Lastly, the contributing factors were explored and it was found that ditches and ponds are important sinks in dry season. However, during the rainy season, ditches and ponds become sources of pollutants, with the rapid drainage of ditches and the overflow of ponds in upland areas. The results of this study revealed that the ditches and ponds could be used for ecological engineering in upland catchments to balance drainage and intercept pollutants.
关键词： ditches ponds non-point source pollution mountainous areas nitrogen phosphorus
STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 503-509 doi: 10.15302/J-FASE-2023528
STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT
关键词： GREEN AGRICULTURAL PROMOTE POLLUTION SOURCE DEVELOPMENT POINT STRENGTHENING CONTROL
LU Wenjing, WANG Hongtao
《环境科学与工程前沿（英文）》 2008年 第2卷 第1期 页码 15-23 doi: 10.1007/s11783-008-0006-z
Modeling agricultural non-point source pollution in a high-precipitation coastal area of China
Zhiyi LI,Pengfei DU,Haiwei HUANG,Yong Ge,Xu LI
《环境科学与工程前沿（英文）》 2014年 第8卷 第6期 页码 922-928 doi: 10.1007/s11783-014-0720-7
关键词： Changtan Reservoir watershed non-point source pollution modeling pre-rainfall soil moisture model calibration
Loss coefficient of nitrogenous non-point source pollution under various precipitation conditions
CHENG Hongguang, HAO Fanghua, REN Xiyan, YANG Shengtian, XIONG Wen, LEI Shaoping
《环境科学与工程前沿（英文）》 2008年 第2卷 第2期 页码 230-235 doi: 10.1007/s11783-008-0043-7
关键词： information concept non-point historical real-time sedimentation
FULL TIME-SPACE GOVERNANCE STRATEGY AND TECHNOLOGY FOR CROPLAND NON-POINT POLLUTION CONTROL IN CHINA
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 593-606 doi: 10.15302/J-FASE-2023522
Ensuring food safety while reducing agricultural non-point source pollution is quite challenging, especially in developing and underdeveloped countries. Effective systematic strategies and comprehensive technologies need to be developed for agricultural non-point source pollution control at the watershed scale to improve surface water quality. In this review, a proposal is made for a full time-space governance strategy that prioritizes source management followed by endpoint water pollution control. The 4R chain technology system is specifically reviewed, including source reduction, process retention, nutrient reuse and water restoration. The 4R chain technology system with the full time-space governance strategy was applied at the scale of an administrative village and proved to be a feasible solution for reducing agricultural non-point source pollution in China. In the future, a monitoring system needs to be established to trace N and P transport. Additionally, new smart fertilizer and intelligent equipment need to be developed, and relevant governance standards and supportive policies need to be set to enhance the efficacy of agricultural non-point source pollution control.
关键词： 4R chain technology system agricultural non-point source pollution case study full time-space governance strategy
REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 627-638 doi: 10.15302/J-FASE-2023516
The agricultural and livestock activities surrounding the rivers flowing into the lakes have caused non-point source pollution, leading to excessive amounts of nutrient salts in downstream rivers. Introducing river water into constructed wetlands along river course has proven to be an effective solution for decreasing nitrogen (N) and phosphorus (P) loads. This paper reports 9 years of monitoring the Yong’an River and its surrounding constructed wetlands in the upper reaches of Erhai Lake, located in Yunnan Province, China. This study analyzed the main types of pollutants in the river, and evaluated the removal efficiency of pollutants by the constructed wetlands. The findings indicate that total nitrogen (TN) and nitrate nitrogen (NO3–-N) are the primary pollutants in the Yong’an River, which exhibit variation throughout the year corresponding to the alternating wet and dry seasons. Although constructed wetlands are effective in removing NO3–-N and P, their efficacy in removing ammonium nitrogen (NH4+-N) and organic pollutants is limited. This limitation can be attributed to the lack of timely disposal of aquatic plant residues. This research contributes to the understanding of the potential issues that may arise during the extended use of constructed wetlands and provides solutions to address them.
关键词： inflowing rivers surface-flow constructed wetland nutrients long-term monitoring
HUANG Jinliang, HONG Huasheng, ZHANG Luoping
《环境科学与工程前沿（英文）》 2008年 第2卷 第3期 页码 333-339 doi: 10.1007/s11783-008-0035-7
INTERACTIVE KNOWLEDGE LEARNING BY ARTIFICIAL INTELLIGENCE FOR SMALLHOLDERS
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 648-653 doi: 10.15302/J-FASE-2023505
Enhancement of farming management relies heavily on enhancing farmer knowledge. In the past, both the direct learning approach and the personnel extension system for improving fertilization practices of smallholders has proven insufficiently effective. Therefore, this article proposes an interactive knowledge learning approach using artificial intelligence as a promising alternative. The system consists of two parts. The first is a dialog interface that accepts information from farmers about their current farming practices. The second part is an intelligent decision system, which categorizes the information provided by farmers in two categories. The first consists of on-farm constraints, such as fertilizer resources, split application times and seasons. The second comprises knowledge-based practices by farmers, such as nutrient in- and output balance, ratios of different nutrients and the ratios of each split nutrient amount to the total nutrient input. The interactive knowledge learning approach aims to identify and rectify incorrect practices in the knowledge-based category while considering the farmer’s available finance, labor, and fertilizer resources. Investigations show that the interactive knowledge learning approach can make a strong contribution to prevention of the overuse of nitrogen and phosphorus fertilizers, and mitigating agricultural non-point source pollution.
关键词： artificial intelligence extension system non-point source pollution control smallholders fertilization
ENHANCING RAINFALL-RUNOFF POLLUTION MODELING BY INCORPORATION OF NEGLECTED PHYSICAL PROCESSES
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 553-565 doi: 10.15302/J-FASE-2023519
The growing need to mitigate rainfall-runoff pollution, especially first flush, calls for accurate quantification of pollution load and the refined understanding of its spatial-temporal variation. The wash-off model has advantages in modeling rainfall-runoff pollution due to the inclusion of two key physical processes, build-up and wash-off. However, this disregards pollution load from wet precipitation and the relationship between rainfall and runoff, leading to uncertainties in model outputs. This study integrated the Soil Conservation Service curve number (SCS-CN) into the wash-off model and added pollutant load from wet precipitation to enhance the rainfall-runoff pollution modeling. The enhanced wash-off model was validated in a typical rural-residential area. The results showed that the model performed better than the established wash-off model and the commonly-used event mean concentrations method, and identified two different modes of pollution characteristics dominated by land pollution and rainfall pollution, respectively. In addition, the model simulated more accurate pollutant concentrations at high-temporal-resolution. From this, it was found that 12% of the total runoff contained 80% to 95% of the total load for chemical oxygen demand, total N, and total P, whereas it contained only 15% of the total load for NH4+-N. The enhanced model can provide deeper insights into non-point pollution mitigation.
关键词： Erhai Lake field experiment non-point source pollution load rainfall runoff wash-off model
Removal of non-point pollutants from bridge runoff by a hydrocyclone using natural water head
Jianghua YU, Yeonseok KIM, Youngchul KIM
《环境科学与工程前沿（英文）》 2013年 第7卷 第6期 页码 886-895 doi: 10.1007/s11783-012-0449-0
关键词： first flush hydrocyclone non-point pollution removal efficiency stormwater runoff
秦忠,耿清蔚,臧贵敏
《中国工程科学》 2010年 第12卷 第6期 页码 113-116
通过对2005年与2000年入河污染物总量的分析表明，点源在入河污染物总量中的占比逐年下降，面源的占比迅速增加，尤其是TP（总磷） 入河量已经超过点源；面源污染呈“总量持平，结构调整”态势； 面源污染物总量构成中，农村居民生活位居第一，其次是水产养殖、水田径流等。在面源污染成因分析基础上，相应提出了太湖流域平原水网区面源污染控制的对策建议。
武淑霞, 刘宏斌, 刘申, 王耀生, 谷保静, 金书秦, 雷秋良, 翟丽梅, 王洪媛
《中国工程科学》 2018年 第20卷 第5期 页码 23-30 doi: 10.15302/J-SSCAE-2018.05.004
农业面源污染是造成我国水环境污染的主要因素之一，具有随机性强、污染排放不固定、污染负荷变化大等特点，防治较点源污染更为困难，了解农业面源污染现状及其防控技术是进行面源污染治理的前提。本文概述了农业面源污染成因及其现状，指出种植业中肥料的不合理施用和规模化畜禽养殖排污是当前最重要的农业面源污染来源，较全面地介绍了种植业和畜禽养殖业中较为成熟的面源污染防控技术，提出“源头控制为主、过程阻控与末端治理相结合”是当前进行农业面源污染防控的主要途径，应因地制宜地采用相应的面源污染防控技术，实现环境效益、经济效益和社会效益的同步发展。
《农业科学与工程前沿（英文）》 2022年 第9卷 第3期 页码 407-424 doi: 10.15302/J-FASE-2022448
● Soil nitrogen fluxes and influencing factors were reviewed in the subtropical hilly regions.
关键词： nitrogen cycling soil nitrogen nitrogen deposition greenhouse gases emission non-point source pollution nitrogen use efficiency
《农业科学与工程前沿（英文）》 2023年 第10卷 第4期 页码 518-529 doi: 10.15302/J-FASE-2023525
This paper examines the historical evolution of crop-livestock integration in China with a specific focus on its role in mitigating non-point source pollution. Extensive examination of existing literature has unearthed the roots of crop-livestock integration dating back to the Western Zhou Dynasty (1046 to 771 BCE), ultimately culminating in a multifaceted and intricately interwoven system of rural development policies seen in contemporary China. This paper identifies and characterizes four distinct stages in the historical trajectory of crop-livestock integration: the era of self-sufficient subsistence production in traditional times (1046 BCE to 1948); the period where crop-livestock integration emerged as a pivotal strategy for augmenting grain and meat production under collectivist policies (1949‒1977); the phase marked by the industrialization and expansion of the livestock sector during the early years of economic reforms (1978‒2011); and the present era in which crop-livestock integration is harnessed as a mechanism for pollution control and ecological preservation in contemporary China (2012 to present). This paper illuminates the diverse contributions of crop-livestock integration in different epochs of rural development within China, which contributes to a nuanced and more theoretically grounded comprehension of circular agriculture. This understanding has the potential to be leveraged to promote sustainable rural development in broader contexts.
关键词： crop-livestock integration non-point source pollution control nutrient cycling policy intervention sustainable development
标题 作者 时间 类型 操作
DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND
期刊论文
Role of rural solid waste management in non-point source pollution control of Dianchi Lake catchments
LU Wenjing, WANG Hongtao
期刊论文
Modeling agricultural non-point source pollution in a high-precipitation coastal area of China
Zhiyi LI,Pengfei DU,Haiwei HUANG,Yong Ge,Xu LI
期刊论文
Loss coefficient of nitrogenous non-point source pollution under various precipitation conditions
CHENG Hongguang, HAO Fanghua, REN Xiyan, YANG Shengtian, XIONG Wen, LEI Shaoping
期刊论文
FULL TIME-SPACE GOVERNANCE STRATEGY AND TECHNOLOGY FOR CROPLAND NON-POINT POLLUTION CONTROL IN CHINA
期刊论文
REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS
期刊论文
Control division of agricultural non-point source pollution at medium-sized watershed scale in Southeast
HUANG Jinliang, HONG Huasheng, ZHANG Luoping
期刊论文
Removal of non-point pollutants from bridge runoff by a hydrocyclone using natural water head
Jianghua YU, Yeonseok KIM, Youngchul KIM
期刊论文
SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM MEASUREMENTS AND MODELING
期刊论文
京公网安备 11010502051620号
