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Geochemical characterization of loess-paleosol sequences:Comparison between the upper reaches of the Hanjiang and Weihe river valleys,China

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Journal of geographical sciences 2017年第1期27卷 95-108页

作者： BIAN Hongyan PANG Jiangli HUANG Chunchang ZHOU Yali School of geographical sciences Southwest University college of tourism and Environment science Shaanxi Normal University

This paper aims to compare the geochemical characteristics of loess-paleosol sequences in the upper reaches of the Hanjiang and Weihe river valleyswhich are located in the semi-humid temperate zone and humid subtropical zonerespectively. The Mituosi（MTS） profile in the upper reaches of the Hanjiang River valley and the Yaohecun（YHC） profile in the Weihe River valley were selected for this comparative research. The stratigraphic characteristicscompositionchemical weathering intensityleaching rates of Ca and Namobility of major elementsand transport features of Na and Fe were analyzed with respect to depth and compared between the two profiles. This study reached the following conclusions.（1） The composition of the loess-paleosol sequences in two regions are quite similar to the average composition of the upper continental crust（UCC）indicating that the loess in the two regions came from multiple sources and was mixed well. Thereforethe loess in the two regions is considered aeolian loess.（2） Compared with the loess-paleosol sequence in the Weihe River valleythe loess-paleosol sequence in the upper reaches of the Hanjiang River valley features a darker color; a higher chemical index of alteration（CIA） value; higher leaching rates of Na and Ca; higher migration ratio（relative to K） of AlSiMgand Na; and lower migration ratio of Fe and Ca. This evidence indicates that the loess-paleosol sequence in the humid subtropical environment experienced stronger chemical weathering intensity than the loess-paleosol sequence in the semi-humid temperate zone.（3） Both the YHC profile and MTS profile record a period of climate deterioration at 6000–5000 a BP. The period punctuated the mid-Holocene Climatic Optimum（8500–3100 a BP） in the study area.

关键词： loess-paleosol sequence geochemical characterization Hanjiang and Weihe river valleys

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大历史与小历史——《中国科学院地理科学与资源研究所所志系列》评介（英文）

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Journal of geographical sciences 2018年第12期28卷 2016-2018页

作者：孙俊潘玉君 college of tourism and geographical sciences Yunnan Normal University

Editorial Committee,2016.Institute of Geography,CAS:1940–1999.Beijing:science Press(in Chinese);Editorial Committee,2016.Commission for Integrated Survey of Natural Resources,CAS:1956–1999.Beijing:science Press(in Chinese);Editorial Committee,2016.The Road of Developing Geography:Memoirs of Activities in Institute of Geography,CAS,1940–1999.Beijing:science Press(in Chinese);Editorial Committee,2016.Unfulfilled Foot-

关键词：地理科学自然资源研究所 CAS 历史编辑委员会科学出版社评论

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Characteristics of Sand Dune Pattern and Fluvial-aeolian Interaction in Horqin Sandy Land, Northeast Plain of China

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Chinese geographical science 2018年第4期28卷 624-635页

作者： DU Huishi WANG Zongming MAO Dehua college of tourism and geographical science Jilin Normal University Northeast Institute of Geography and Agroecology Chinese Academy of Sciences

The interaction between fluvial and aeolian processes can significantly change surface morphology of the Earth. Taking the Horqin Sandy Land as the research area and using Landsat series satellite remote sensing images, this study utilizes geomorphology and landscape ecology to monitor and analyze the aeolian geomorphology characteristics of the Horqin Sandy Land. Results show that the sand dunes of the Horqin Sandy Land are mainly distributed on alluvial plains along the banks of the mainstream and tributaries of the Western Liao River, and the sand dune types tend to simplify from west to east and from south to north. The aeolian geomorphology coverage tend to be decreasing in the past 40 years, with an average annual change rate of 0.31%. While the area of traveling dunes decreased, the area of fixed and semi-fixed dunes increased. The fractal dimensions of various types of sand dune have all remained relatively constant between 1.07 and 1.10, suggesting that they are experiencing a relatively stable evolutionary process. There is a complex interaction between fluvial and aeolian processes of the Horqin Sandy Land, which plays a central role in surface landscape molding. Sand dunes on both sides of different rivers on the Horqin Sandy Land present certain regularity and different characteristics in terms of morphology, developmental scale, and spatial pattern. There are six fluvial-aeolian interaction modes in this area: supply of sand sources by rivers for sand dune development, complete obstruction of dune migration by rivers, partial obstruction of dune migration by rivers, influence of river valleys on dune developmental types on both sides, influence of river valleys on dune developmental scale on both sides, and river diversion due to obstruction and forcing by sand dunes. This study deepens our understanding of the surface process mechanism of the interaction between fluvial and aeolian processes in semi-arid regions, and provides a basis for researches on regional landscape responses in the context of

关键词：相互作用能沙丘特征东北平原土地表面形态学 Landsat 中国

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Sandy Land-lake-vegetation Landscape of Songnen Sandy Land of China:Pattern,Process and Mechanism

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Chinese geographical science 2022年第4期32卷 580-591页

作者： DU Huishi HASI Eerdun college of tourism and geographical science Jilin Normal UniversitySiping 136000China Faculty of geographical science Beijing Normal UniversityBeijing 100875China

In order to investigate the dynamic evolution of the sandy land-lake-vegetation landscape in Songnen Sandy Land(SSL)and its response to climate change and human activities,the distribution pattern,evolution,and driving mechanisms of the landscape were analyzed based on Landsat satellite images and meteorological and socio-economic data during 1980–2020.The results indicate that the area of sandy land exhibited an upward fluctuation during the last 40 yr,with a net increase of 251.75 km^(2) at an increment rate of 3.80%/10 yr.The lake area also exhibited an upward fluctuation,with a net increase of 1200.95 km^(2) at an increment rate of 20.42%/10 yr.Vegetation coverage decreased by 2633.30 km^(2),with areas of low vegetation coverage exhibiting a trend of initial decline and subsequent increase,areas of medium vegetation coverage showed an upward fluctuation,and areas of high vegetation coverage showed a trend of initial increase and subsequent decrease,with overall changes of–0.67%/yr,1.12%/yr,and 0.17%/yr,respectively.The relationships between sandy land,lakes,and vegetation coverage were significant,with areas of sandy land and low vegetation coverage showing the strongest correlation.The dynamic evolution of landscape is controlled by regional climatic and socio-economic factors,with socio-economic factors as the first principal component contributing up to 59.64%.

关键词： sandy land lake wetland vegetation cover landscape evolution Songnen Sandy Land(SSL)

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Geostatistical analysis of variations in soil salinity in a typical irrigation area in Xinjiang, northwest China

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Research in Cold and Arid Regions 2016年第2期8卷 147-155页

作者： Mamattursun Eziz Mihrigul Anwar XinGuo Li College of Geographical Science and Tourism Xinjiang Normal University college of Resources and Environmental science Xinjiang University

Characterizing spatial and temporal variability of soil salinity is tremendously important for a variety of agronomic and environmental concerns in arid irrigation areas. This paper reviews the characteristics and spatial and temporal variations of soil salinization in the Ili River Irrigation Area by applying a geostatistical approach. Results showed that: (1) the soil salinity varied widely, with maximum value of 28.10 g/kg and minimum value of 0.10 g/kg, and was distributed mainly at the surface soil layer. Anions were mainly SO42- and Cl-, while cations were mainly Na+ and Ca2+; (2) the abundance of salinity of the root zone soil layer for different land use types was in the following order: grassland > cropland > forestland. The abundance of salinity of root zone soil layers for different periods was in the following order: March > June > September; (3) the spherical model was the most suitable variogram model to describe the salinity of the 0-3 cm and 3-20 cm soil layers in March and June, and the 3-20 cm soil layer in September, while the exponential model was the most suitable variogram model to describe the salinity of the 0-3 cm soil layer in September. Relatively strong spatial and temporal structure existed for soil salinity due to lower nugget effects; and (4) the maps of kriged soil salinity showed that higher soil salinity was distributed in the central parts of the study area and lower soil salinity was distributed in the marginal parts. Soil salinity tended to increase from the marginal parts to the central parts across the study area. Applying the kriging method is very helpful in detecting the problematic areas and is a good tool for soil resources management. Managing efforts on the appropriate use of soil and water resources in such areas is very important for sustainable agriculture, and more attention should be paid to these areas to prevent future problems.

关键词： soil salinization variation geostatistics Ili River Irrigation Area

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Identifying the influence of urbanization on soil organic matter content and p H from soil magnetic characteristics

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Journal of Arid Land 2015年第6期7卷 820-830页

作者： YANG Han XIONG Heigang CHEN Xuegang WANG Yaqi ZHANG Fang college of Resource and Environment sciences Xinjiang University College of Geographical Science and Tourism Xinjiang Normal University college of Applied Arts and science of Beijing Union University

Soil magnetic characteristics are correlated with soil p H and organic matter content. Analyzing soil magnetic characteristics, organic matter content and p H can indirectly evaluate soil pollution caused by human activities. This study analyzed the soil magnetic characteristics, organic matter content and p H in surface soil samples from different land use types in Shihezi city, a newly and rapidly developing oasis city in Xinjiang of China. The aims of this study were to explore the possible relationships among the soil magnetic parameters and thereby improve the understanding of influence of urbanization on soil properties. Eighty surface soil samples at the depth of 0–10 cm were collected from 29 July to 4 August 2013. The results showed that the magnetic minerals in surface soil were dominated by ferromagnetic minerals. Spatially, the magnetic susceptibility（χLF）, anhysteretic remanent magnetization susceptibility（χARM）, saturation isothermal remanent magnetization（SIRM） and ＂soft＂ isothermal remanent magnetization（SOFT） were found to be most dominant in the new northern urban area B（N-B）, followed by built-up areas（U）, suburban agricultural land（F）, and then the new northern urban area A（N-A）. The values of χLF, χARM, SIRM and SOFT were higher in the areas with high intensities of human activities and around the main roads. Meanwhile, the property ＂hard＂ isothermal remanent magnetization（HIRM） followed the order of U〉N-B〉F〉N-A. Built-up areas had an average p H value of 7.93, which was much higher than that in the new northern urban areas as well as in suburban agricultural land, due to the increased urban pollutant emissions. The average value of soil organic matter content in the whole study area was 34.69 g/kg, and the values in the new northern urban areas were much higher than those in the suburban agricultural land and built-up areas. For suburban agricultural land, soil organic matter content was significantly negatively correlated with χLF, and had no correlation with other magnetic parameters, sinc

关键词： environmental magnetism surface soil p H soil organic matter content

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Surface energy and water vapor fluxes observed on a megadune in the Badain Jaran Desert, China

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Journal of Arid Land 2015年第5期7卷 579-589页

作者： HU Wenfeng WANG Nai'ang ZHAO Liqiang NING Kai ZHANG Xunhe SUN Jie Center for Climate Change and Hydrologic Cycle in Arid Region College of Earth and Environmental Science Lanzhou University College of Geographical Science and Tourism Xinjiang Normal University

The Badain Jaran Desert is the second-largest area of shifting sands in China. Our first measurements of the energy components and water vapor fluxes on a megadune using eddy covariance technology were taken from April 2012 to April 2013. The results indicate that the Iongwave and shortwave radiative fluxes exhibited large fluctuations and seasonal dynamics. The total radiative energy loss by Iongwave and shortwave radiation was greater on the megadune than from other underlying surfaces. The radiation partitioning was different in different seasons. The land-atmosphere interaction was primarily represented by the sensible heat flux. The average sensi- ble heat flux （40.1 W/m2） was much larger than the average latent heat flux （14.5 W/m2）. Soil heat flux played an important role in the energy balance. The mean actual evaporation was 0.41 mm/d, and the cumulative actual evaporation was approximately 150 mm/a. The water vapor would transport downwardly and appear as dew con- densation water. The amount of precipitation determined the actual evaporation. The actual evaporation was sup- posed to be equal to the precipitation on the megadune and the precipitation was difficult to recharge the ground- water. Our study can provide a foundation for further research on land-atmosphere interactions in this area.

关键词： eddy covariance technology energy and water vapor fluxes precipitation evaporation

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Exploitation Countermeasures of Farming Culture tourism in the Dabie Mountains: Thinking on the Investigation of Hani Terrace tourism Development in Yunan Province

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Journal of Landscape Research 2017年第3期9卷 109-111,114页

作者： WU Yingjie ZENG Bo GAN Chang DUAN Tao CHEN Lijun college of tourism Culture and geographical science Huanggang Normal University

Farming culture is the main part of Chinese outstanding traditional culture and also the important spiritual and cultural resources to construct the core values of the Chinese nation. In the new era, fully exploring and making full use of farming culture resources has important practical significance for the protection, inheritance and innovation of Chinese excellent traditional culture. The rapid development and successful brand shaping of Hani terrace tourism could provide experience for the exploration and utilization of farming culture tourism resources in other areas of China. Based on the analysis of development process of Hani terrace tourism as well as the successful experience of other regions for reference, ideas of developing farming culture tourism in the Dabie Mountains were proposed.

关键词： Farming culture tourism Exploitation countermeasures Hani terraces The Dabie Mountains

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Hyperspectral Inversion and Analysis of Zinc Concentration in Urban Soil in the Urumqi City of China

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地球与环境科学(英文) 2023年第2期5卷 76-87页

作者： Qing Zhong Mamattursun Eziz Mireguli Ainiwaer Rukeya Sawut College of Geographical Science and Tourism Xinjiang Normal UniversityUrumqiXinjiang830054China Laboratory of Arid Zone Lake Environment and Resources Xinjiang Normal UniversityUrumqiXinjiang830054China

Excessive accumulation of zinc(Zn)in urban soil can lead to environmental pollution and pose a potential threat to human health and the ecosystem.How to quickly and accurately monitor the urban soil zinc content on a large scale in real time and dynamically is crucial.Hyperspectral remote sensing technology provides a new method for rapid and nondestructive soil property detection.The main goal of this study is to find an optimal combination of spectral transformation and a hyperspectral estimation model to predict the Zn content in urban soil.A total of 88 soil samples were collected to obtain the Zn contents and related hyperspectral data,and perform 18 transformations on the original spectral data.Then,select important wavelengths by Pearson’s correlation coefficient analysis(PCC)and CARS.Finally,establish a partial least squares regression model(PLSR)and random forest regression model(RFR)with soil Zn content and important wavelengths.The results indicated that the average Zn content of the collected soil samples is 60.88 mg/kg.Pearson’s correlation coefficient analysis(PCC)and CARS for the original and transformed wavelengths can effectively improve the correlations between the spectral data and soil Zn content.The number of important wavelengths selected by CARS is less than the important wavelengths selected by PCC.Partial least squares regression model based on first-order differentiation of the reciprocal by CARS(CARS-RTFD-PLSR)is more stable 2 and has the highest prediction ability(R=0.937,RMSE=8.914,MAE=2.735,RPD=3.985).The CARS-RTFD-PLSR method can be used as a means of prediction of Zn content in soil in oasis cities.The results of the study can provide technical support for the hyperspectral estimation of the soil Zn content.

关键词： Urban soil Zinc Hyperspectral remote sensing Prediction PLSR RFR

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文化遗产的旅游开发潜力及障碍因子——基于湘西传统音乐的实证

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Journal of geographical sciences 2024年第2期34卷 309-328页

作者：张先永彭保发周璐璐鲁春阳王亚力刘锐向慧 college of Music and Dance Hunan University of Arts and ScienceChangde 415000HunanChina college of Geography and tourism Hunan University of Arts and ScienceChangde 415000HunanChina college of geographical sciences Southwest UniversityChongqing 400715China college of Surveying and Mapping and Urban Spatial Information Henan University of Urban ConstructionPingdingshan 467036HenanChina college of tourism Management Chaohu UniversityHefei 238000China Institute of Green Low-Carbon Development Southwest UniversityChongqing 400715China

Traditional music is an important component of cultural heritage.However,studies have scarcely explored the tourism development potential and the obstacle factors of traditional music.This study takes Xiangxi as the research site,constructs an evaluation index system,and utilizes survey and geographical methods.The major research results are as follows:First,the average potential of resource endowment,tourism industry development,and socio-economic conditions are 0.28,0.36,and 0.24,respectively.The potential of resource endowment is higher in the west and lower in the east,that of tourism industry development is higher in the north and south and lower in the center,and that of socio-economic conditions is higher in the south and lower in the north.Second,the comprehensive potential is 0.29,which is higher in the northwest and southwest regions.Coordination in most administrative units is at a medium level,and most regions have obvious advantages in resource endowment.Third,the primary obstacle factor is socio-economic conditions(39.21%),followed by resource endowment(30.73%)and tourism industry development(30.06%).The administrative units can be classified into four groups:socio-economic condition obstacle,resource endowment and tourism industry development obstacles,resource endowment and socio-economic condition obstacles,and tourism industry development and socio-economic condition obstacles.The highest priority goals for Xiangxi involve economic development and the integration of modern technologies to stimulate passenger flow.For reg traditional music items(eastern area of Xiangxi),tourism development should be restrained and other resources with stronger inherent advantages should be exploited.This study explored the quantification of traditional music tourism potential,representing a novel breakthrough in this field of research.The indicator system and research methods used in this study can provide guidance and methodological references for cultural heritage research.The suggestions proposed in this artic

关键词： cultural heritage tourism development potential obstacle factors traditional music Xiangxi

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