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Field scale interaction and nutrient exchange between surface water and shallow groundwater in the Baiyang Lake region,North China Plain

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Journal of Environmental Sciences 2016年第7期28卷 60-75页

作者： Bentje Brauns Poul L.Bjerg xianfang song Rasmus Jakobsen Department of Environmental Engineering Technical University of Denmark State Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences Sino-Danish Center for Education and Research Geological Survey of Denmark and Greenland

Fertilizer input for agricultural food production, as well as the discharge of domestic and industrial water pollutants, increases pressures on locally scarce and vulnerable water resources in the North China Plain. In order to：（a） understand pollutant exchange between surface water and groundwater,（b） quantify nutrient loadings, and（c） identify major nutrient removal pathways by using qualitative and quantitative methods, including the geochemical model PHREEQC） a one-year study at a wheat（Triticum aestivum L.） and maize（Zea mays L.） double cropping system in the Baiyang Lake area in Hebei Province, China, was undertaken. The study showed a high influence of low-quality surface water on the shallow aquifer. Major inflowing pollutants into the aquifer were ammonium and nitrate via inflow from the adjacent Fu River（up to 29.8 mg/L NH4-N and 6.8 mg/L NO3-N）, as well as nitrate via vertical transport from the field surface（up to 134.8 mg/L NO3-N in soil water）. Results from a conceptual model show an excess nitrogen input of about 320 kg/ha/a. Nevertheless,both nitrogen species were only detected at low concentrations in shallow groundwater,averaging at 3.6 mg/L NH4-N and 1.8 mg/L NO3-N. Measurement results supported by PHREEQC-modeling indicated cation exchange, denitrification, and anaerobic ammonium oxidation coupled with partial denitrification as major nitrogen removal pathways. Despite the current removal capacity, the excessive nitrogen fertilization may pose a future threat to groundwater quality. Surface water quality improvements are therefore recommended in conjunction with simultaneous monitoring of nitrate in the aquifer, and reduced agricultural N-inputs should be considered.

关键词： Groundwater pollution North China Plain Surface water–groundwater interaction Wheat–maize double cropping Nitrogen Anammox

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Changes and determining factors of crop evapotranspiration derived from satellite-based dual crop coefficients in North China Plain

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The Crop Journal 2022年第5期10卷 1496-1506页

作者： Qinghua Tan Yujie Liu Tao Pan xianfang song Xiaoyan Li Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China

Evaluating actual crop evapotranspiration(ET) variations and their determining factors under changing climates is crucial for agricultural irrigation management and crop productivity improvement in nonhumid *** study analyzed the spatiotemporal characteristics and detected the determining factors of ETfor winter wheat and summer maize rotation system from 2000 to 2017 in the North China Plain(NCP),by combining the FAO-56 dual crop coefficient approach with remotely sensed vegetation indices(VIs).The results indicated that daily air temperature increased in varying degrees while wind speed and sunshine hours decreased slightly during the growing season of winter wheat and summer maize over the study *** trends of relative humidity and effective precipitation varied in crop growing *** on the validated relationship of dual crop coefficients and VIs,the estimated multi-year average ETof winter wheat(370.29±31.28 mm) was much higher than summer maize(281.85±20.14 mm),and the rotation cycle was 652.43±27.67 *** ETof winter wheat and the rotation cycle increased by 2.96 mm aand 1,77 mm a,***,the ETof summer maize decreased with distinct spatial ***,winter wheat ETincreased significantly in the northeast NCP,covering the Beijing-Tianiin-Hebei ***,significant increases in summer maize ETwere detected in the southwest *** sensitivity and contribution analysis showed that ETof winter wheat and summer maize was positively sensitive to temperature,wind speed,and sunshine hours while negatively to relative ***,wind speed and sunshine hours contributed most to changes in ET(around 20%-40%).

关键词： Actual crop evapotranspiration Determining factor North China Plain Rotation system Spatiotemporal variation

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Effect of Land Use on Soil Properties in Debris Flow Bottomland:A Case Study at Xiaojiang Basin, Yunnan

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Wuhan University Journal of Natural Sciences 2006年第4期11卷 870-874页

作者： ZHANG Qiuying LI Fadong LIU Mengy song xianfang OU Guoqiang Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041 Sichuan China Graduate University of Chinese Academy of Sciences Beijing 100049China Institute of Genetic and Developmental Biology Chinese Academy of Sciences Shijiazhuang 050021 Hebei China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

In order to understand the effect of different land use on soil physics and nutrients properties of the debris flow bottomland, a case study at Daqing gully （in Xiaojiang Basin, Yunnan） was conducted in 2004. Soil samples were taken at depth of 0-10,10-20,20-40,40-60,60-80 cm under three land use patterns crop bottomland （CL）, forest bottomland （FL）, and barren bottomland（BL）. The results showed that the developing bottomland to CL promoted soil toaccumulate total phosphorus （TP） and available phosphorus （AP）, pH value transferred from neutral to alkalescency, and organic matter decreased significantly. Furthermore, the contents of total nitrogen （TN） and available nitrogen （AN） in CL were lower than that of FL and BL because the growth of crops consumed more nutrients in soil. The results also showed that the contents of TP, AP and available potassium （AK） in soil were positively correlated with soil particle.

关键词： land use soil properties soil granule composition Xiaojiang Basin

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Identification of key factors governing chemistry in groundwater near the water course recharged by reclaimed water at Miyun County, Northern China

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Journal of Environmental Sciences 2013年第9期25卷 1754-1763页

作者： Yilei Yu xianfang song Yinghua Zhang Fandong Zheng Ji Liang Dongmei Han Ying Ma Hongmei Bu Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences University of Chinese Academy of Sciences Institute of Beijing Hydraulic Research

Reclaimed water was successfully used to recover the dry Chaobai River in Northern China, but groundwater may be polluted. To ensure groundwater protection, it is therefore critical to identify the governing factors of groundwater chemistry. Samples of reclaimed water, river and groundwater were collected monthly at Chaobai River from January to September in 2010. Fifteen water parameters were analyzed. Two kinds of reclaimed water were different in type （Na-Ca-Mg-Cl-HCO3 or Na-Ca-Cl-HCO3 ） and concentration of nitrogen. The ionic concentration and type in river were similar to reclaimed water. Some shallow wells near the river bed had the same type （Na-Ca-Mg-Cl-HCO3 ） and high concentration as reclaimed water, but others were consistent with the deep wells （Ca-Mg-HCO3 ）. Using cluster analysis, the 9 months were divided into two periods （dry and wet seasons）, and all samples were grouped into several spatial clusters, indicating different controlling mechanisms. Principal component analysis and conventional ionic plots showed that calcium, magnesium and bicarbonate were controlled by water-rock interaction in all deep and some shallow wells. This included the dissolution of calcite and carbonate weathering. Sodium, potassium, chloride and sulfate in river and some shallow wells recharged by river were governed by evaporation crystallization and mixing of reclaimed water. But groundwater chemistry was not controlled by precipitation. During the infiltration of reclaimed water, cation exchange took place between （sodium, potassium） and （calcium, magnesium）. Nitrification and denitrification both happened in most shallow groundwater, but only denitrification in deep groundwater.

关键词： reclaimed water groundwater chemistry multivariate analysis Chaobai River water-rock interaction evaporation crystallization cation exchange denitrification

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Impact of reclaimed water in the watercourse of Huai River on groundwater from Chaobai River basin, Northern China

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Frontiers of Structural and Civil Engineering 2017年第4期11卷 643-659页

作者： Yilei YU xianfang song Yinghua ZHANG Fandong ZHENG Licai LIU Beijing Key Laboratory of Wetland Services and Restoration Institute of Wetland Research Chinese Academy of Forestry B eijing 100091 China Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Beijing Water Science and Technology Institute Beijing 100048 China

Reclaimed water is efficient for replenishing the dry rivers in northern China, but regional groundwater may be at risk from pollution. Therefore, samples of reclaimed water, river water, and groundwater were collected at the Huai River in the Chaobai River basin in 2010. The water chemistry and isotopic compositions of the samples were analyzed in the laboratory. The reclaimed water had stable compositions of water chemistry and isotopes, and the Na. Ca-HCO3. C1 water type. The water chemistry of the river water was consistent with that of the reclaimed water. A June peak of total nitrogen was the prominent characteristic in the shallow groundwater, which also had the Na. Ca-HCO3. C1 water type. However, the water chemistry and isotopes in most of the deep groundwater remained stable, and the water type was Ca-Mg-HCO3. The amount of reclaimed water recharging the groundwater was about 2.5 - 107 m^3/yr. All of the shallow groundwater was impacted by the reclaimed water, with the mixing proportion of reclaimed water ranging from 42% to 80 % in the dry season and from 20% to 86% in the wet season. Only one deep well, with proportions of 67% （dry season） and 28% （wet season）, was impacted. TDS, EC, and major ions （Na, K, C1, NHn-N, NO2-N, and NO3-N） were increased in the impacted wells.

关键词： groundwater hydrochemistry Huai River reclaimed water stable isotopes

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Characteristics of δ^(18)O in precipitation over Eastern Monsoon China and the water vapor sources

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Chinese Science Bulletin 2010年第22期55卷 200-211页

作者： LIU JianRong song xianfang YUAN GuoFu SUN XiaoMin LIU Xin Key Laboratory of Water Cycle & Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research ChineseAcademy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China CERN Sub-center of Water Beifing 100101 China

Monsoon circulation is an important carrier of water vapor transport, and it impacts the precipitation of the monsoonal regions through the constraints and controls of large-scale water vapor transport and distributions as well as the water vapor balance. An overall research on stable Hydrogen and Oxygen isotopes in precipitation over Eastern Monsoon China could benefit a comprehensive understanding of the monsoonal precipitation mechanism. Seventeen field stations of the Chinese Network of Isotopes in Precipitation (CHNIP) have been selected to collect monthly composite precipitation samples during the years 2005―2006. Components of δ D and δ 18O have been analyzed to achieve the spatiotemporal distributions. The established Local Meteoric Water Line δ D=7.46δ 18O+0.90 based on the 274 obtained monthly samples could be treated as isotope input functions across the region, due to basically reflecting the specific regional meteorological conditions over Eastern Monsoon China. The δ-value depleted from coastal to inner area. In Southern China and Northeastern China there were typical periodic patterns of δ18O. Different dominant affecting metrological factors have been raised with different regions. From south to north, the temperature effect of δ18O enhanced, while the amount effect changed from existing at an all-year-scale in Southern China to being only remarkable during the main rainy seasons in North China and Northeastern China. Main geographical controls varied from altitude in Southern China and North China to latitude in Northeastern China. Furthermore, δ18O had an implication of advance and retreat of the monsoon as well as rainfall belt transfer. δ 18O was also a tracer for the movement path of typhoon and tropical storms.

关键词：中国东部季风环流降水机制水汽来源特征氧同位素水汽输送平衡控制

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Stable isotopes of summer monsoonal precipitation in southern China and the moisture sources evidence from δ^18O signature

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Journal of Geographical Sciences 2008年第2期18卷 155-165页

作者： LIU Jianrong song xianfang YUAN Guofu SUN Xiaomin LIU Xin WANG Zhimin WANG Shiqin Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100039 China CERN Sub-center of Water Beijing 100101 China

Summer monsoons （South Asian monsoon, South China Sea monsoon and Subtropical monsoon） are prominent features of summertime climate over southern China. Dif- ferent monsoons carry different inflow moisture into China and control the temporal and spatial distributions of precipitation. Analyses of meteorological data, particularly wind, tempera- ture and pressure anomalies are traditional methods of characterizing moisture sources and transport patterns. Here, we try to utilize the evidence from stable isotopes signatures to trace summer monsoons over southern China. Based on seven CHNIP （Chinese Network of Iso- topes in Precipitation） observatory stations located in southern China, monthly composite precipitation samples have been collected and analyzed for the composition of δ^18O during July, 2005. The results indicated that the spatial distributions of δ^18O in precipitation could properly portray the moisture sources together with their transport pathways. Moreover, the amount effect, altitude effect, temperature effect and the correlation between δ^18O vs. relative humidity were discussed.

关键词： summer monsoon precipitation δ^18O vapor inflow corridors southern China

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Water quality of reclaimed water from treated urban wastewater in Chaobai River Basin,North China

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Chinese Journal of Population,Resources and Environment 2014年第2期12卷 103-109页

作者： Yilei Yu xianfang song Yinghua Zhang Fandong Zheng Licai Liu Institute of Wetland Research Chinese Academy of Forestry Key Laboratory of Water Cycle and Relate Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences Beijing Water Science & Technology Institute

The utilization of reclaimed water could be an efficient tool to alleviate water scarcity,especially for dry river ***,it is crucial to monitor water quality to ensure safety to human health and to avoid negative effects on the *** water samples were collected bimonthly from May to November in 2010 in Chaobai River,and the physiochemical parameters were *** main results are as follows:The parameters exceeding the threshold value of the water guidelines are mainly nutrition related to nitrogen and phosphorus,which are known to increase the risk of eutrophication in surface ***,nitrite and nitrate can be detrimental to human *** majority of the parameters have a peaking concentration in May,whereas others either show significant temporal variation over the entire period or remain relatively constant in all four *** analysis shows that some parameters(pH,T and B) have no significant correlation with others,whereas significant positive correlation was found for Sr with EC and TDS,for CI with TDS,for Si02 with TP and for NO3-N with TN and a significant negative correlation between SO4 and *** to principal component analysis,60.108%of the total data is represented by dominant solutes,and the second principal component with a percentage of 31.876 comprises parameters related to *** cluster analysis of parameters identified four groups,which represent different compositions,and samples in May differ from others.

关键词： water quality treated urban wastewater water guidelines multivariate statistical analysis Chaobai River

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非充分灌溉条件下农田水分转化SWAP模拟

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农业工程学报 2012年第4期28卷 60-68页

作者：冯绍元马英霍再林宋献方扬州大学水利科学与工程学院扬州225009 中国农业大学中国农业水问题研究中心北京100083 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室北京100101

非充分灌溉改变了农田水分转化过程,以往的研究较少讨论作物根系层以下的土壤水分转化动态及其对作物耗水的影响。该文在北京市典型农田开展了冬小麦-夏玉米非充分灌溉试验,在对SWAP模型率定与验证基础上,模拟分析了非充分灌溉农田耗水... 详细信息

非充分灌溉改变了农田水分转化过程,以往的研究较少讨论作物根系层以下的土壤水分转化动态及其对作物耗水的影响。该文在北京市典型农田开展了冬小麦-夏玉米非充分灌溉试验,在对SWAP模型率定与验证基础上,模拟分析了非充分灌溉农田耗水规律与水分转化过程,并应用模型得到了研究区不同降水年型的最优非充分灌溉模式。结果表明:非充分灌溉的实施促使作物消耗大量土壤贮水,当降雨或灌溉量较小时,土壤水可占作物耗水量的46.1%;根区和储水区之间土壤水分交换明显,转化通量变化范围为-2.67～0.45mm/d,而储水区底部水分通量较小且无明显变化,根区土壤水分渗漏出现在灌溉或较大的降雨之后,储水区水分向上补给主要发生在作物需水关键期;与常规灌溉相比,最优非充分灌溉模式在丰水年、平水年和枯水年分别节水375、225和225mm,储水区底部深层水分渗漏量分别减少了89%、17%和2%。

关键词：灌溉土壤水分模型非充分灌溉冬小麦-夏玉米农田水分转化深层渗漏 SWAP模型

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南海珊瑚礁人工岛淡水透镜体形成过程及影响因素

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地理学报 2020年第5期75卷 1053-1064页

作者：韩冬梅曹国亮宋献方中国科学院地理科学与资源研究所中国科学院陆地水循环及地表过程重点实验室北京100101 中国科学院大学资源与环境学院北京100101 中国水利水电科学研究院北京100083

中国目前在珊瑚礁上建设人工岛的目标是建成生态宜居岛屿,人工岛地下海水在降雨入渗驱替作用下逐渐淡化,形成的淡水透镜体是支撑岛屿生态系统的重要水源。本文针对南海珊瑚礁普遍存在的上土下岩的二元地质结构,考虑不同测量方法得到的... 详细信息

中国目前在珊瑚礁上建设人工岛的目标是建成生态宜居岛屿,人工岛地下海水在降雨入渗驱替作用下逐渐淡化,形成的淡水透镜体是支撑岛屿生态系统的重要水源。本文针对南海珊瑚礁普遍存在的上土下岩的二元地质结构,考虑不同测量方法得到的南海人工岛填筑所用珊瑚砂渗透系数存在较大差异,建立了珊瑚礁人工岛淡水驱替海水形成淡水透镜体的动态模拟模型,对南海某珊瑚礁人工岛开展了系列数值模拟研究。结果表明,人工岛礁二元地质结构不同的渗透性对人工岛淡水开始形成时间无明显影响,填岛完成2年左右的时间可观测到淡水,估计(或理论计算)在10~20年内可形成相对稳定的淡水透镜体;在人工岛面积达到一定规模的前提下,全新世珊瑚砂沉积物渗透性是控制人工岛礁淡水透镜体的主要因素,能够形成的淡水透镜体体积随渗透系数增大而呈对数减小,并且淡水透镜体体积随全新世沉积物渗透性增大而减小的速率较淡水透镜体厚度更加显著;淡水透镜体越过不整合面进入更新世礁灰岩后,由于含水层渗透系数突然增大,淡水透镜体向水平方向扩展,在礁灰岩顶界形成"髭"状淡水体。

关键词：人工岛礁二元地质结构淡水透镜体珊瑚砂渗透性南海

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