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Ocean current observation and spectrum analysis in central Chukchi Sea during the summer of 2008

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Acta Oceanologica Sinica 2013年第3期32卷 10-18页

作者： CHEN Hongxia wang Huiwu SHU Qi wang daolong LIU Na First Institute of Oceanography State Oceanic Administration Key Laboratory of Marine Science and Numerical Modeling State Oceanic Administration

During the summer of 2008, the third CHINARE Arctic Expedition was carried out on board of Xuelong Icebreaker in the central Chukchi Sea. A submersible mooring system was deployed and recovered at Station CN-01 （71.40.024＇N, 167.58.910＇W） with 33 days of the current profile records, and continuous observation of temperature and salinity data were collected. This mooring station locates in the blank of similar observation area and it is the first time for our Chinese to finish this kind of long-term mooring work in this area. This mooring system finished integrated hydrological observations with long-term continuous record of the whole profile velocity for the first time. Based on time series analysis of temperature, salinity, velocity and flow direction, we get the following main results. （1） During the observation period, the mean surface current velocity is 70.2 cm/s eastward, and velocity reaches its maximum in average at 3 m level with magnitude 90.0 cm/s, direction 206.. （2） In 9-30 m layers, the semidiurnal period variation is the most obvious, the flow direction is quite stable, and the flow is synchronous and consistent vertically. （3） Besides the semidiurnal period variation, the main variation in the upper layer is in 11-d period, with variations in period 5.5, 5.5, and 3.7 d, which reflect the influences of sea surface wind change and maintenance. （4） Near the bottom the temperature change is correlated and synchronized with the conductivity.

关键词： Arctic Ocean Chukchi Sea submersible mooring system long-term observations spectrumanalysis

Estimating the evolution of sea state non-Gaussianity based on a phase-resolving model

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Journal of Oceanology and Limnology 2022年第5期40卷 1909-1923页

作者： Xingjie JIANG Tingting ZHANG Dalu GAO daolong wang Yongzeng YANG First Institute of Oceanography and Key Laboratory of Marine Science and Numerical ModelingMinistry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and Numerical Modeling Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Shandong Key Laboratory of Marine Science and Numerical Modeling Qingdao 266061China Ocean University of China College of Oceanic and Atmospheric SciencesQingdao 266071China

The occurrence of rogue waves is closely related to the non-Gaussianity of sea states,and this non-Gaussianity can be estimated using corresponding two-dimensional wave *** paper presents an approach to non-Gaussianity estimation based on a phase-resolving model called the high-order spectral method(HOSM).Based on numerous HOSM simulations,a set of precalculated non-Gaussianity indicators was established that could be applied to real sea states without any calibration of spectral *** a newly developed extraction approach,the indicators for given two-dimensional wave spectra could then be conveniently extracted from the precalculated *** feasibility of the newly developed approach in a real wave environment is *** the estimation approach,phase-resolved non-Gaussianity can now be illustrated throughout the evolution of sea states of interest,not just at a few specific times;and the level of non-Gaussianity at any time in a duration can be identified according to the statistics(e.g.,quantities)of the phase-resolved indicators,that are obtained throughout the duration concerned.

关键词： rogue wave sea state non-Gaussianity high-order spectral method spectral geometry wave-wave nonlinearity

Investigation of wave characteristics in a semi-enclosed bay based on SWAN model validated with buoys and ADP-observed currents

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Journal of Oceanology and Limnology 2019年第2期37卷 434-447页

作者： LU Jing TENG Yong CHI Wanqing YIN Liping wang daolong First Institute of Oceanography MNR Qingdao 266061 China Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

In this study, the simulating waves nearshore (SWAN) model with a locally refined curvilinear grid system was constructed to simulate waves in Jervis Bay and the neighbouring ocean of Australia, with the aim of examining the wave characteristics in an area with special topography and practical importance. This model was verified by field observations from buoys and acoustic Doppler profilers (ADPs). The model precisions were validated for both wind-generated waves and open-ocean swells. We present an approach with which to convert ADP-observed current data from near the bottom into the significant wave height. Our approach is deduced from the Fourier transform technique and the linear wave theory. The results illustrate that the location of the bay entrance is important because it allows the swells in the dominant direction to propagate into the bay despite the narrowness of the bay entrance. The wave period T p is also strongly related to the wave direction in the semi-enclosed bay. The Tp is great enough along the entire propagating direction from the bay entrance to the top of the bay, and the largest Tp appears along the north-west coast, which is the end tip of the swells’ propagation.

关键词： wave simulating waves nearshore (SWAN) acoustic Doppler profilers (ADPs) buoy swell semi-enclosed bay

A study on the spatial difference of farmland nitrogen nutrient budget in the Bohai Rim region, China

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Journal of Geographical Sciences 2012年第4期22卷 761-768页

作者： GUO Liying YANG Ren wang daolong Institute of Natural Resources and Regional Planning Chinese Academy of Agricultural Sciences(CAAS)Beijing 100081China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China

The Bohai Rim region is one the most important bases for commodity grain production in China. With the rapid pace of agricultural industrialization, nitrogenous fertilizer has been used at an ever increasing rate, which resulted in the trace of accumulative nitrogen in the soil and caused serious environmental problems. In this study we made use of the farmland nitrogen balance model to assess the spatial difference of farmland nitrogen nutrient budget in the Bohai Rim region in 2008 with the assistance of GIS. Our results indicated that： 1） Farmland in this region has a nitrogen surplus totaling 5.0822 million tons, or an average of 288.54 kg/ha. 2） In the Bohai Rim region, farmland nitrogen input and farmland nitrogen budget both show a spatial differentiation. Major grain-producing areas have a higher nitrogen input than that of the grazing-farming areas. The main sources of nitrogen input include chemical fertilizer, organic fertilizer, deposition from atmospheric drying and wetting, and biological fixation, which account for 79.47%, 9.53%, 4.62%, and 3.58% of the total input, respectively. Therefore, chemical fertilizer is the predominant source of nitrogen input to farmland. 3） A total of 3.3398 million tons of nitrogen were output from the farmland via harvested crops and it accounts for 52.36% of the total nitrogen output from farmland in this region. On average, the amount of nitrogen output from unit farmland is equal to 176.65kg/ha. This study has shed light on farmland nitrogen budget and its spatial variation in the study area, may provide scientific evidences for rationalizing the use of chemical fertilizer and managing agricultural operation on the regional scale and is also valuable for improving the economic and ecological efficiency of fertilizer use at the regional scale.

关键词： farmland nitrogen nutrient nitrogen budget spatial difference agricultural production the BohaiRim region

A Brief Review: Statistical Methodology for Mapping Quantitative Trait Loci

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安徽农业大学学报 1999年第1期26卷 112-118页

作者： daolong wang (Biometrics Section,Anhui Agricultural University,Hefei 230036) Jun Zhu (Department of Agronomy,Zhejiang University) 安徽农业大学安徽合肥浙江大学浙江

由于数量性状表型变异的连续性，无法用传统的孟德尔方法对单个数量性状位点（ＱＴＬ）进行分离和定位。８０年代初发现的ＤＮＡ分子标记已被广泛应用于ＱＴＬ的分离、定位及遗传效应估计，即ＱＴＬ作图。统计学分析是实现ＱＴＬ作图的... 详细信息

由于数量性状表型变异的连续性，无法用传统的孟德尔方法对单个数量性状位点（ＱＴＬ）进行分离和定位。８０年代初发现的ＤＮＡ分子标记已被广泛应用于ＱＴＬ的分离、定位及遗传效应估计，即ＱＴＬ作图。统计学分析是实现ＱＴＬ作图的一个重要环节。本文对８０年代以来ＱＴＬ作图统计方法的主要发展进行了简要综述。

关键词：数量性状 QTL作图 DNA分子标记统计方法的发展

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磷脂酶Dβ在拟南芥低温信号中的转导作用

基因组学与应用生物学 2009年第5期28卷 901-907页

作者：赵鹏王道龙中国农业科学院农业资源与农业区划研究所北京100081 中山火炬职业技术学院中山528436

磷脂酶D(PLD)不仅是植物中一类主要的磷脂水解酶,而且是一类重要的跨膜信号转导酶类。PLD的磷脂降解功能和信号转导功能均影响植物的抗冻性。本研究以PLDβ基因被敲除的拟南芥突变体及其野生型植株为材料,进行低温驯化和冻害胁迫处理,... 详细信息

磷脂酶D(PLD)不仅是植物中一类主要的磷脂水解酶,而且是一类重要的跨膜信号转导酶类。PLD的磷脂降解功能和信号转导功能均影响植物的抗冻性。本研究以PLDβ基因被敲除的拟南芥突变体及其野生型植株为材料,进行低温驯化和冻害胁迫处理,并分析其作用途径。结果表明,PLDβ基因介导低温信号转导作用,参与渗透调节途径中脯氨酸的调控和抗氧化系统中过氧化氢酶(CAT)活性的调控,并且与低温信号激素ABA不在同一条信号转导途径。本研究为探索通过调控PLD的活性提高植物抗冻性提供了新的途径,并为深入揭示植物的抗冻机理以及磷脂信号转导机制提供实验支持。

关键词：磷脂酶D PLDβ 拟南芥低温驯化信号转导

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磷脂酶D对拟南芥抗冻性的影响

中国农学通报 2011年第6期27卷 107-111页

作者：赵鹏王道龙中国农业科学院农业资源与农业区划研究所北京100081 中山火炬职业技术学院广东中山528436

为了探索磷脂酶D(PLD)在调控植物抗冻性中的作用,进一步揭示植物抗冻机理和磷脂低温信号转导机制的研究。笔者应用人工气候霜箱,对PLDγ1、PLDγ3基因分别被敲除的拟南芥突变体及野生型材料,进行低温驯化和冻害胁迫处理。试验发现,这2... 详细信息

为了探索磷脂酶D(PLD)在调控植物抗冻性中的作用,进一步揭示植物抗冻机理和磷脂低温信号转导机制的研究。笔者应用人工气候霜箱,对PLDγ1、PLDγ3基因分别被敲除的拟南芥突变体及野生型材料,进行低温驯化和冻害胁迫处理。试验发现,这2个基因的敲除型无论是经过还是未经过低温驯化冻害处理的离子渗漏率都与相同处理野生型拟南芥的离子渗漏率无显著差异。试验结果表明,PLDγ1和PLDγ3这2个基因既未参与组成型调控植物的抗冻性,也未参与低温信号转导过程。

关键词：磷脂酶D 拟南芥低温驯化信号转导

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内蒙古现代农业发展水平分析

中国农业资源与区划 2012年第2期 68-72+96页

作者：马强王道龙中国农业科学院农业资源与农业区划研究所内蒙古中小企业局

目前内蒙古农业现代化正由起步阶段步入农业现代化快速发展阶段。通过与全国现代农业发展水平的定量比较,分析判断目前内蒙古现代农业发展水平与全国平均水平基本一致,2003～2008年内蒙古现代农业综合发展速度比全国平均速度快1.28个百... 详细信息

目前内蒙古农业现代化正由起步阶段步入农业现代化快速发展阶段。通过与全国现代农业发展水平的定量比较,分析判断目前内蒙古现代农业发展水平与全国平均水平基本一致,2003～2008年内蒙古现代农业综合发展速度比全国平均速度快1.28个百分点。内蒙古农业现代化发展应该在协调推进农业现代化、农村工业化和城镇化的前提下,实施"收缩集中,集约发展"战略。

关键词：内蒙古现代农业发展水平

基于LCA的秸秆沼气集中供气工程环境影响评价

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农业工程学报 2017年第21期33卷 237-243页

作者：王红彦王亚静高春雨王道龙覃诚毕于运中国农业科学院农业资源与农业区划研究所北京100081

为进一步研究秸秆沼气工程生命周期的环境影响,采用生命周期评价方法对秸秆沼气集中供气利用模式的环境影响进行分析,系统比较沼气系统不同单元的环境影响。将秸秆沼气工程建设单元的物质和能量投入及其环境排放纳入生命周期边界,以河... 详细信息

为进一步研究秸秆沼气工程生命周期的环境影响,采用生命周期评价方法对秸秆沼气集中供气利用模式的环境影响进行分析,系统比较沼气系统不同单元的环境影响。将秸秆沼气工程建设单元的物质和能量投入及其环境排放纳入生命周期边界,以河南省安阳县西街村秸秆沼气工程为例进行实证分析,对秸秆沼气集中供气工程建设单元、运行单元和产物利用单元进行清单分析和环境影响评价。结果表明,该沼气工程运行1 a产出13.60万m^3沼气,系统环境影响综合值为129.94标准人当量。从沼气系统各阶段看,沼气工程建设单元、运行单元和产物利用单元的环境影响潜值分别占沼气系统生命周期环境影响的65.62%、32.76%和1.62%。从能源替代角度看,该秸秆沼气集中供气工程替代煤炭的全球环境影响负荷为–132.48标准人当量。与煤炭作为炊事用能相比,该沼气工程的环境影响负荷可降低50.50%,秸秆沼气作为可再生的清洁能源可以有效替代煤炭燃烧从而改善环境质量。沼气工程建设阶段的环境影响对秸秆沼气集中供气系统总环境影响的贡献最大,而产物利用阶段环境排放影响最小。秸秆沼气工程运行单元的煤炭增温和电力消耗是影响沼气工程环境排放的重要因素,选择低碳环保的沼气增保温方式和降低工程运行电耗是未来秸秆沼气集中供气工程工艺改进的重要内容。

关键词：秸秆环境影响温室气体沼气集中供气工程生命周期评价