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Jiping Jiang, Feng Han, Yi Zheng, Nannan Wang, Yixing Yuan
《环境科学与工程前沿(英文)》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1081-4
Uncertainty rules of pollution source inversion are revealed by stochastic analysis A release load is most easily inversed and source locations own largest uncertainty Instantaneous spill assumption has much less uncertainty than continuous spill The estimated release locations and times negatively deviate from real values The new findings improve monitoring network design and emergency response to spills
关键词: River chemical spills Emergency response Pollution source inversion Inverse uncertainty analysis Regional Sensitivity Analysis method (RSA) Monte Carlo analysis toolbox (MCAT)
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
《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
Xiaojian ZHANG , Chao CHEN ,
《环境科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 364-368 doi: 10.1007/s11783-009-0027-2
关键词: emergency drinking water treatment water pollution adsorption oxidation precipitation
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
Guobin SHAN , Rajeshwar D. TYAGI , Rao Y. SURAMPALLI , Tian C. ZHANG
《环境科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 249-264 doi: 10.1007/s11783-009-0029-0
关键词: nanomaterials industrial agricultural nonpoint source pollution environmental burden reduction
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
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
Nitrogen pollution and source identification of urban ecosystem surface water in Beijing
Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG
《环境科学与工程前沿(英文)》 2014年 第8卷 第1期 页码 106-116 doi: 10.1007/s11783-012-0474-z
关键词: nitrogen concentration spatial and seasonal variation stable nitrogen isotope urban ecosystem source
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
Lifeng Guo,Xiaoye Zhang,Junting Zhong,Deying Wang,Changhong Miao,Licheng Zhao,Zijiang Zhou,Jie Liao,Bo Hu,Lingyun Zhu,Yan Chen,
《工程(英文)》 doi: 10.1016/j.eng.2023.02.017
关键词: CCMVS-R Regional carbon assimilation system Anthropogenic carbon emissions CO2 POD 4DVar
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
卞有生
《中国工程科学》 2001年 第3卷 第5期 页码 17-21
文章从生态学角度对湖泊面源污染进行了深入分析,指出湖泊面源污染的实质是资源利用问题,并由此提出在湖区及湖泊水源区开展农业生态工程建设,降低资源消耗,减少污染物产生,达到控制和治理湖泊面源污染之目的。介绍了农业生态工程建设的一般程序、主要建设研究内容。最后列举北京市大兴县留民营村农业生态工程建设和胜利油田大型生态农场建设两个典型案例,具体介绍农业生态工程建设对发展经济、改善环境、减少化肥及农药用量、消除土壤污染、治理与控制面源污染的重要作用。
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
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
标题 作者 时间 类型 操作
Inverse uncertainty characteristics of pollution source identification for river chemical spill incidents
Jiping Jiang, Feng Han, Yi Zheng, Nannan Wang, Yixing Yuan
期刊论文
DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND
期刊论文
Emergency drinking water treatment in source water pollution incident-technology and practice in China
Xiaojian ZHANG , Chao CHEN ,
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
Nanomaterials for environmental burden reduction, waste treatment, and nonpoint source pollution control
Guobin SHAN , Rajeshwar D. TYAGI , Rao Y. SURAMPALLI , Tian C. ZHANG
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
REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS
期刊论文
Nitrogen pollution and source identification of urban ecosystem surface water in Beijing
Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG
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
Construction and Application of a Regional Kilometer-Scale Carbon Source and Sink Assimilation Inversion
Lifeng Guo,Xiaoye Zhang,Junting Zhong,Deying Wang,Changhong Miao,Licheng Zhao,Zijiang Zhou,Jie Liao,Bo Hu,Lingyun Zhu,Yan Chen,
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