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Science china Earth Sciences 2005年第7期 1040-1051页

作者： FANG Xiaomin1,2, ZHAO Zhijun3.2, LI Jijun2, YAN Maodu2, PAN Baotian2, SONG Chunhui2 & DAI Shuang2 1. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, china 2. Key Laboratory of Western china's Environmental Systems, Ministry of Education & college of Resources and Environment, Lanzhou {3., Lanzhou 73.000, china 3. college of geography, nanjing normal university, nanjing 210097, china

Cenozoic sediments in the foreland basin——Jiuquan Basin in west Hexi Corridor recorded tectonic uplift information of the Qilian Mountains. High resolution paleomagnetic dating of the Laojunmiao （LJM） section across the central LJM anticline in the southern Jiuquan Basin reveals ages of the Getanggou Member, Niugetao Member in the Shulehe Formation, the Yumen Conglomerate, Jiuquan Conglomerate and Gobi Formation at >13.8.3.Ma, 8.3.4.9 Ma, 3.66― 0.93.Ma, 0.84―0.14 Ma and 0.14―0 Ma, respectively. Sedimentary evolution study suggests that the Qilian Mountains should begin to rise gradually since8―6.6 Ma, accompanied by sedimentary environments changing from lacustrine mudstones-sandstones to alluvial conglom- erates. Rapid uplift of the Qilian Mountains began at3.66 Ma, followed by a series of stepwise or intermittent intensive uplifts at about 3.Ma, 0.93.0.84 Ma and 0.14 Ma, which finally resulted in the present high Qilian Mountains.

关键词： Qilian Mountains Qinghai-Tibetan Plateau Jiuquan Basin magnetostratigraphy.

Landscape structure and land uese on county level in northeastern Yunnan Province of china——a case study of Huize County

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Journal of Environmental Sciences 2000年第3期12卷 355-360页

作者： WANG Jin\|liang, NI Shao\|xiang (college of Geographical Science, nanjing normal university, nanjing 210097,{3.) 南京师范大学江苏南京 2 1 0 0 97

Taking Huize County as an example, the paper analyzed the landscape structure(landscape element structure, landscape type structure, landscape spatial structure, landscape succession structure) and the relations between landscape structure and land use. It was pointed out that the agriculture should be developed in harmony with the landscape structure in the study area.

关键词： landscape structure land use agriculture Yunnan Province china

ON FRACTAL MECHANISM OF COASTLINE-A Case Study of china

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Chinese Geographical Science 2002年第2期12卷 142-145页

作者： ZHU Xiao hua, WANG Jian(college of Geographical Science,nanjing normal {3.,nanjing 210097,P.R.china) college of Geographical Science Nanjing Normal University Nanjing 210097 college of Geographical Science Nanjing Normal University Nanjing

MANDELBROT enunciated the uncertainty of the length of a coastline in his paper"How long is the coastline of Britain?"published in "Science" in 1967. The fractal concept was presented for the first time in that paper and has been applied to many fields ever since. According to the fractal theory and conditions of fractal research of coastline,the controls of faults and biologic function on the fractal character of coastline are preliminarily discussed on the basis of GIS in this paper . Finally,some significant conclusions are drawn:1)the faults control the basic trends of coastlines of two study areas;2)the fractal dimension of coastline of Taiwan is smaller than that of Changle-Lufeng,because the faults of Taiwan more intensely control the trend and fractal dimension of the coastline;3.the larger the fractal dimension of the faults or the major faults,the more the controlling effect of them on the trend and fractal dimension of coastline; 4)the larger fractal dimension of the coastline of Changle-Lufeng indicates that the biologic function intensely shapes the coastline. In a word,the controls of faults and biologic function on the fractal character of coastline are discussed with a case study of china in this paper,it can be seen that faults and biologic function both have influence over the trend and fractal dimension of coastline,the fractal mechanism of coastline of two study areas may be so.

关键词： fractal fractal dimension GIS faults biologic function coastline

The regional disparities of socio-economic development in rural Jiangsu Province,china

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Journal of Geographical Sciences 1998年第3期8卷 57-65页

作者： TANG Maolin Department of geography, nanjing normal university, nanjing 210097{3.

Since the implementation of reform and open door policy in china, Jiangsu has become one of the provinces which have the highest speed of economic development. With the implementation of the uneven development strategy, Jiangsu has witnessed a widening dichotomy in levels of socio economic development: southeast showing rapid improvement and north showing little improvement, particularly in rural areas. Based on factor analysis, it is argued that foreign investment, agricultural productivity, the character of regional economic structures, and the level of urbanization all contribute in varying ways to the inequalities in levels of socio economic development in different regions of Jiangsu. According to the levels of socio economic development, eleven regions are categorized into three groups.

关键词： socio economic development areal disparity factor analysis rural areas Jiangsu china.

Modal identification of system driven by lévy random excitation based on continuous time AR model

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Science china(Technological Sciences) 2009年第12期52卷 3649-3653页

作者： DU XiuLi 1,2 &WANG FengQuan 1 1 college of Civil Engineering,Southeast university,nanjing 210096,{3. 2 School of Mathematical Sciences,nanjing normal university,nanjing 210097,{3. college of Civil Engineering Southeast University Nanjing 210096 China School of Mathematical Sciences Nanjing Normal University Nanjing 210097 China

Based on the continuous time AR model,this paper presents a new time-domain modal identification method of LTI system driven by the uniformly modulated lévy random *** structural dynamic equation is first transformed into the observation equation and the state equation(namely,stochastic differential equation).Based on the property of the strong solution of the stochastic differential equation,the uniformly modulated function is identified *** by virtue of the Girsanov theorem,we present the exact maximum likelihood estimators of ***,the modal parameters are identified by eigen *** results show that the method not only has high precision and robustness but also has very high computing efficiency.

关键词： modal identification uniformly modulated function CAR model lévy process exact maximum likelihood estimator

Effect of climatic change on snowmelt runoffs in mountainous regions of inland rivers in Northwestern china

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Science china Earth Sciences 2006年第8期49卷 881-888页

作者： WANG Jian1 & LI Shuo2 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 73.000, china 2. college of geography,{3., nanjing 210097, china 1. Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China 2. college of geography Nanjing Normal University Nanjing 210097 China

Climatic change has significant impacts on snow cover in mid-latitude mountainous re- gions, in the meantime, spatial and temporal changes of snow cover and snowmelt runoffs are con- sidered as sensitive indicators for climatic change. In this study, the upper Heihe Watershed in the Qilian Mountains was selected as a typical area affected by snow cover and snowmelt runoffs in northwestern china. The changes in air temperatures, precipitation, snowfall and spring snowmelt runoffs were analyzed for the period from 1956 to 2001. The results indicate that climatic warming was apparent, particularly in January and February, but precipitation just fluctuated without a clear trend. The possible changes of snowmelt runoffs in the upper Heihe watershed in response to a warming of 4℃ were simulated using Snowmelt Runoff Model (SRM) based on the degree-day factor algorithm. The results of the simulation indicate that a forward shifting of snow melting season, an increase in water flows in earlier melting season, and a decline in flows in later melting season would occur under a 4℃ warming scenario.

关键词： climatic changes, snowmelt runoff, SRM model, upper Heihe Watershed, simulating.

Relationships Between Tidal Prism and Throat Area of Tidal Inlets Along Yellow Sea and Bohai Sea Coasts

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china Ocean Engineering 1996年第2期11卷 229-238页

作者： Zhang Renshun and Wang Yaping Professor, Dept. of geography, nanjing normal university, nanjing 210024 Lecturer, nanjing normal university, nanjing 210024 Dept. of geography Nanjing Normal University Nanjing 210024 nanjing normal university Nanjing 210024

The relationship between P (spring tidal prism) and A (throat area below mean sea level) is statistically analysed in terms of 29 tidal inlets or bays along the Huanghai Sea (Yellow Sea) and Bohai Sea coasts. For 15 of these tidal inlets, the best regression equation is A(km2) = 0.845 />(km3.1.20. The analysis shows that C and n are little different from those in the P-A relationship for the inlets of the South china Sea and East china Sea coasts. It is noted that the relationship between P and A is unstable because of the difference in sediment abundance. The study shows that a united P-A relationship can be obtained for the tidal inlets of lagoon type and bay-drowned-valley type, not containing some half-circle shape bays which confront deep water. These half-circle bays do not belong to tidal inlets because they do not have enough sediment abundance and are fairly open.

关键词： tidal inlet P-A relationship Huanghai Sea (Yellow Sea) Bohai Sea

A relative local variational principle for topological pressure

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Science china Mathematics 2010年第6期53卷 1491-1506页

作者： MA XianFeng1,CHEN ErCai2,3.& ZHANG AiHua2,4 1Department of Mathematics,East china university of Science and Technology,Shanghai 20023.,china 2School of Mathematics and Computer Science,{3. normal university,{3. 210097,china 3.enter of Nonlinear Science,{3. university,{3. 210093.china 4{13. of Mathematics and Physics,{3. university of Posts and Telecommunications,{3. 210046,china 1. Department of Mathematics East China University of Science and Technology Shanghai 200237 China2. School of Mathematics and Computer Science Nanjing Normal University Nanjing 210097 China3. Center of Nonlinear Science Nanjing University Nanjing 210093 China4. College of Mathematics and Physics Nanjing University of Posts and Telecommunications Nanjing 210046 China

We define the relative local topological pressure for any given factor map and open cover,and prove the relative local variational principle of this *** precisely,for a given factor map π:(X,T)→(Y,S) between two topological dynamical systems,an open cover U of X,a continuous,real-valued function f on X and an S-invariant measure ν on Y,we show that the corresponding relative local pressure P(T,f,U,y) satisfies sup μ∈M(X,T){ hμ(T,U|Y)+∫X f(x)dμ(x) :πμ=ν}=∫Y P(T,f,U,y)dν(y),where M(X,T) denotes the family of all T-invariant measures on ***,the supremum can be attained by a T-invariant measure.

关键词： pressure conditional entropy relative local variational principle

Soil Organic Carbon Storage in china

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Pedosphere 2004年第4期14卷 491-500页

作者： XIEXian-Li SUNBo ZHOUHui-Zhen LIAn-Bo InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）. geographycollege NanjingNormalUniversityNanjing210097（China）

Soil organic carbon (SOC) storage under different types of vegetations in china were estimated using measured data of 2 440 soil profiles to compare SOC density distribution between different estimates, to map the soil organic carbon stocks under different types of vegetation in china, and to analyze the relationships between soil organic carbon stocks and environmental variables using stepwise regression analyses. Soil organic carbon storage in china was estimated at 69.3. Gt (10 15 g). There was a big difference in SOC densities for various vegetation types, with SOC distribution closely related to climatic patterns in general. Stepwise regression analyses of SOC against environmental variables showed that SOC generally increased with increasing precipitation and elevation, while it decreased with increasing ***, the important factor controlling SOC accumulation for forests was elevation, while for temperate steppes mean annual temperature dominated. The more specific the vegetation type used in the regression analysis, the greater was the effect of environmental variables on SOC. However, compared to native vegetation, cultivation activities in the croplands reduced the influence of environmental variables on SOC.

关键词： china environmental factors soil organic carbon storage vegetation

Predicting bioconcentration factor values of organic pollutants based on medv descriptors derived QSARs

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Science china Chemistry 2007年第5期50卷 587-592页

作者： CUI ShiHai1,2, YANG Jing1, LIU ShuShen2,3.& WANG LianSheng2 1 college of Chemistry and Environment, nanjing normal university, nanjing 210097,{3. 2 State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, nanjing university, nanjing 210093.{3. 3.Key Laboratory of Yangtze Aquatic Environment, Ministry of Education, college of Environmental Science and Engineering, Tongji university, Shanghai 200092,{3. 1. college of Chemistry and Environment Nanjing Normal University Nanjing 210097 China 2. State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing 210093 China 3. Key Laboratory of Yangtze Aquatic Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai 200092 China

The molecular electronegativity-distance vector (MEDV) is employed todescribe the chemical structure of organic *** linear relationships between themolecular descriptors and BCF values are developed by best subset regression and partial leastsquare regression *** main structural factors influencing the bioactivities are -CH2,-X,-Cnot <,- C not <,-O-.The high values of r2 and q2_(LOO) present good estimation ability and stabilityof *** prediction power for external samples is validated by the model developed from thetraining set.

关键词： POPs, BCF, MEDV, QSAR