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Energy Balance-Based SWAT Model to Simulate the Mountain Snowmelt and Runoff——Taking the Application in Juntanghu Watershed(China) as an Example

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Journal of Mountain Science 2015年第2期12卷 368-381页

作者： MENG Xian-Yong yu dan-lin LIU Zhi-Hui School of Resources and Environment Science Xinjiang University Key Laboratory of Oasis Ecology Ministry of Education Xinjiang University Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Department of Earth & Environmental Studies Montclair State University Institute of Arid Ecology and Environment Xinjiang University

In order to predict long-term flooding under extreme weather conditions in central Asia, an energy balance-based distributed snowmelt runoff model was developed and coupled with the Soil and Water Assessment Tool(SWAT) model. The model was tested at the Juntanghu watershed on the northern slope of the Tian Shan Mountains, Xinjiang,China. We compared the performances of temperature-index method and energy balanced method in SWAT model by taking Juntanghu river basin as an application example(as the simulation experiment was conducted in Juntanghu River, we call the energy balanced method as SWAT-JTH). The results suggest that the SWAT snowmelt model had overall Nash-Sutcliffe efficiency(NSE) coefficients ranging from 0.61 to 0.85 while the physical based approach had NSE coefficients ranging from 0.58 to0.69. Overall, on monthly scale, the SWAT model provides better results than that from the SWAT-JTH model. However, results generated from both methods seem to be fairly close at a daily scale. Thestructure of the temperature-index method is simple and produces reasonable simulation results if the parameters are well within empirical ranges. Although the data requirement for the energy balance method in current observation is difficult to meet and the existence of uncertainty is associated with the experimental approaches of physical processes, the SWAT-JTH model still produced a reasonably high NSE. We conclude that using temperature-index methods to simulate the snowmelt process is sufficient, but the energy balance-based model is still a good choice to simulate extreme weather conditions especially when the required data input for the model is acquired.

关键词： SWAT Snowmelt model The physical process Energy balance Temperature-index Water balance

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Regional carrying capacity: case studies of Bohai Rim area

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Journal of Geographical Sciences 2002年第2期12卷 54-62页

作者： yu dan-lin Mao Han-ying Department of Geography University of Wisconsin Milwaukee USA Institute of Geographic Sciences and Natural Resources Research CAS Beijing China

Carrying capacity research has been carried out for a long time. However, synthesized carrying capacity researches based on systematic views began only in the 1970s. There is even less work done in China. This paper tries to address both synthesized carrying capacity research and its utilization in China. State spaces method from the systematic science was borrowed to construct the conceptual model of regional carrying capacity. Based on the conceptual model and the surveys in the Bohai Rim area, we construct a representative indicators system for quantifying regional carrying capacity in the Bohai Rim. While employing system dynamic models we simulated the evolving trend of both the regional carrying states and regional carrying capacity from 1999 to 2015. The results proved the statement that Bohai Rim is overall over-capacity for a long time and will be over-capacity in the foreseeable future. Among all the restriction factors, water shortage and environmental pollution stand out to be the two primary obstacles for Bohai Rims sustainable development. Regional differentiation analysis further indicates that coastal areas of the Bohai Rim burden more than its overall level. However, Shandong province shows some good signs in addressing the regional carrying capacity issues. The research is successful in addressing the quantification of regional carrying capacity issues, but nonetheless it needs further refinery and more information.

关键词： regional carrying capacity regional carrying state Bohai Rim area state space

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Study on optimization of the population system and its coordination with natural resources and environment in the Qaidam Basin

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Journal of Geographical Sciences 1999年第3期9卷 248-256页

作者： yu dan-lin MAO Han-ying FANG Chuang-lin(Laboratory of Modeling and Adjustment of Regional Sustainable Development, Institute ofGeography, Chinese Academy of Sciences, Beijing 100101, China)

The population system is the only subsystem tha has charecteristic of subjectivity in theregional PRED system. Influenced by the particular status quo of natural resources and environmentconditions, the population subsystem of the Qaidam Basin is very different from those of otherregions'. Based on the on-the-spot investigation to the Qaidam Basin in July 1997, the authors of thispaper sum up several characters of the population subsystem of the Basin. (1) Population mainlyconsisting of the big volume of immigrants and floating population increases very fast. (2) With highpopulation mobility there was great discrepany between the actual number of population (aggregatepopulation) and the statidtical population. (3) Degree of urbanization is very high, and employmentconcentrates mainly on the industrial and teftiary industrial sectors. (4) Sex ratio remains veryunbalanced, especially in the youth group of population which exerts high pressure on employmentand training because of the young age structure. (5) Population quality is relatively high as a wholeWhile educahonal level characterizes the undeveloped regions. In order to predict the futurepopulation of the Basin. according to the characters of population system, this paper puts forward away called dividing-steps-forecast-sum to do the prediction till 2050, use both modeling forecastingmethod and empirical evaluation. The results indicated that the total population of the Basin whllreach 1 .28 million in 2050. Among them, the natural increment and immigrant and floating incrementoccupy 34.99% and 60.86%, respectively, with another 4.13% of special population. In terms ofcharactedstics of population and predicted results as well as the status quo of natural resources andenvironment this paper suggests several thoughts to optimize and adjust the population system of theQaidam Basin. They are, firsuy, to control the number of population as well as improve thepopulation quality, and secondly, to reghate the floating

关键词： the Qaidam Basin population system optimization

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柴达木盆地资源开发与经济持续发展战略的理性思考

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资源科学 2000年第1期22卷 55-59页

作者：方创琳余丹林北京大学城市与环境学系北京100871 中国科学院地理研究所北京100101

以对柴达木盆地的实地调研为基础，对盆地资源开发和经济发展现状作了全新审视，认为丰富的矿产资源并未因富得福，投入漏出型产业结构导致盆地经济发展有着强烈的外部推动性，复杂的机构堡垒与体制分割演绎着“小牛拉大车”的现实格局... 详细信息

以对柴达木盆地的实地调研为基础，对盆地资源开发和经济发展现状作了全新审视，认为丰富的矿产资源并未因富得福，投入漏出型产业结构导致盆地经济发展有着强烈的外部推动性，复杂的机构堡垒与体制分割演绎着“小牛拉大车”的现实格局。未来盆地经济持续发展战略为：打破“体制大锅饭”，因地制宜地推行区域经济发展的“单向双轨制”战略；合理配水，推行水资源硬约束条件下的“以水定产”战略；延伸资源开发产业链，实施资源型产品深加工滚动增殖效益的战略；加大基础设施建设力度，推行软投入与硬投入并举的“双轮驱动”战略；重新认识“聚宝盆”，留给后代一个“聚宝盆”，实施可持续发展战略。

关键词：经济持续发展柴达木盆地资源开发

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区域可持续发展SD规划模型的试验优控——以干旱区柴达木盆地为例

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生态学报 1999年第6期19卷 767-774页

作者：方创琳余丹林北京大学城市与环境学系北京100871 中国科学院地理研究所北京100101

柴达木盆地作为我国下世纪重点开发地区之一，对其资源合理开发利用不仅对青海省经济发展有着举足轻重的作用，而且对缩小东西部发展差距、支援西藏、巩固国防有着不可估量的作用。以对盆地的实地考察为基础，运用ＳＤ模型对盆地资源开... 详细信息

柴达木盆地作为我国下世纪重点开发地区之一，对其资源合理开发利用不仅对青海省经济发展有着举足轻重的作用，而且对缩小东西部发展差距、支援西藏、巩固国防有着不可估量的作用。以对盆地的实地考察为基础，运用ＳＤ模型对盆地资源开发和经济同生态环境协调发展弹性方案进行试验调控，得出追求经济发展为主目标的发展型方案、追求资源与生态环境保护为主目标的保护型方案和追求人口、资源、环境和经济社会协调发展为主目标的协调型发展方案。经过多方案比较，认为协调型发展方案为盆地未来发展的相对最佳方案。

关键词：可持续发展 SD模型调控柴达木盆地资源开发

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Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie Zhou Yao lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

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Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： lin Peng yu Bai Hang Li Meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

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PD-YOLO:Colon Polyp Detection Model Based on Enhanced Small-Target Feature Extraction

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Computers, Materials & Continua 2025年第1期82卷 913-928页

作者： Yicong yu Kaixin lin Jiajun Hong Rong-Guei Tsai yuanzhi Huang New Engineering Industry College Putian UniversityPutian351100China Engineering Research Center of Big Data Application in Private Health Medicine(Putian University) Fujian Province UniversityPutian351100China Computer College Guangdong University of Science&TechnologyDongguan523668China

In recent years,the number of patientswith colon disease has increased *** polyps are the precursor lesions of colon *** not diagnosed in time,they can easily develop into colon cancer,posing a serious threat to patients’lives and health.A colonoscopy is an important means of detecting colon ***,in polyp imaging,due to the large differences and diverse types of polyps in size,shape,color,etc.,traditional detection methods face the problem of high false positive rates,which creates problems for doctors during the diagnosis *** order to improve the accuracy and efficiency of colon polyp detection,this question proposes a network model suitable for colon polyp detection(PD-YOLO).This method introduces the self-attention mechanism CBAM(Convolutional Block Attention Module)in the backbone layer based on YOLOv7,allowing themodel to adaptively focus on key information and ignore the unimportant *** help themodel do a better job of polyp localization and bounding box regression,add the SPD-Conv(Symmetric Positive Definite Convolution)module to the neck layer and use deconvolution instead of *** results indicate that the PD-YOLO algorithm demonstrates strong robustness in colon polyp *** to the original YOLOv7,on the Kvasir-SEG dataset,PD-YOLO has shown an increase of 5.44 percentage points in AP@0.5,showcasing significant advantages over other mainstream methods.

关键词： Polyp detection YOLOv7 SPD-Conv CBAM deconvolution

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Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： yuzhu Li yumeng Gao Feng Tian yu Wang yuan Yao Shaoliang lin Xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission

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质疑区域生产率测算:空间视角下的分析

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中国软科学 2009年第11期 160-170页

作者：余丹林吕冰洋美国新泽西州蒙特克莱尔大学地球与环境研究系新泽西美国07043 中国人民大学财政金融学院北京100872

近几年,有大量的文献对中国省份经济的全要素生产率(TFP)进行测算,本文对这些研究方法进行比较,说明这些研究一般忽视省份经济空间相关性和各区域生产函数差异问题。为解决这两个问题,本文引入空间分析的方法论,介绍了文献中较少采用的... 详细信息

近几年,有大量的文献对中国省份经济的全要素生产率(TFP)进行测算,本文对这些研究方法进行比较,说明这些研究一般忽视省份经济空间相关性和各区域生产函数差异问题。为解决这两个问题,本文引入空间分析的方法论,介绍了文献中较少采用的地理加权回归方法——GWR估计。进而,参考面板数据分析的优点,本文创新性地在GWR方法基础上,引入时间的概念,利用时空同质假设,提出新的地理加权回归方法:三维或同质的时空地理加权回归方法,简称HGTWR方法。运用HGTWR方法,本文对1998-2005年我国省份经济TFP进行估计。估计结果说明:我国区域经济的总量生产函数是随时空而变化的;省份经济TFP增长率和贡献度呈"西—中-东"排列;我国经济增长中TFP增长率和贡献度并不低,说明我国近期经济增长并非是低效增长。

关键词：全要素生产率地理加权回归空间相关性

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