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Showing 50 of 160 papers in Geography

Land Use Function Transformation and Its Eco-Environmental Effects: A Case Study of Gaochang District, Turpan City (Postprint)

Ma Xinmiao
2022-04-14 ChinaXiv: chinaxiv-202204.00104

Taking Gaochang District of Turpan City as an example, this study utilizes four periods of remote sensing imagery from 1990, 2000, 2010, and 2018 to interpret and obtain land use change data for the study area. Based on a grid scale and comprehensively employing methods such as land use transition m…

Multi-Proxy Records of Environmental Change from Lake Sediments in High-Altitude Arid Regions: A Case Study of Aksayqin Lake (Postprint)

Xiang Chaosheng
2022-04-14 ChinaXiv: chinaxiv-202204.00105

Lake sediments in the northwestern Tibetan Plateau preserve rich records of regional climatic and environmental changes, which is of significant importance for revealing variations in the Tibetan Plateau's westerly-monsoon circulation system and their interaction processes. By analyzing environmenta…

Spatiotemporal Variation of County-Level Cropland in the Weibei Arid Loess Plateau Region of Shaanxi and Its Impact on Grain Production (Postprint)

Long Xiaocui
2022-04-14 ChinaXiv: chinaxiv-202204.00106

Farmland resources are the fundamental guarantee of national food security, and mastering the quantity and quality status of farmland is the prerequisite for rational utilization of regional farmland resources. Taking Hancheng City, located in the eastern part of the Weibei Dry Plateau in Shaanxi Pr…

Spatiotemporal Pattern Analysis of Stress from Coal Mining Areas on Important Ecological Protection Spaces in the Yellow River Basin, 2012–2019: A Postprint

Zhang Yuhan, Zhou Pu
2022-04-13 ChinaXiv: chinaxiv-202204.00107

The Yellow River Basin is an important energy security support zone in China and a key region for safeguarding national ecological security. Coordinated development of coal resource development and ecological protection holds important practical significance for coordinating basin-wide energy securi…

Postprint of the Study on Spatial Distribution Patterns of National Forest Parks and Their Influencing Factors

Zhu Lei, Li Yannan
2022-04-13 ChinaXiv: chinaxiv-202204.00109

National Forest Parks constitute one of the important carriers of ecological civilization construction in China. This study investigates National Forest Parks in 1994, 2004, and 2019, comprehensively employing spatial analysis techniques to systematically investigate their spatial distribution patte…

An Iterated Local Search Algorithm for the Districting Problem

Kong Yunfeng, Kong Yunfeng
2022-03-29 ChinaXiv: chinaxiv-202203.00118

The regionalization problem involves partitioning a specific geographic region into several spatially contiguous zones to satisfy the fundamental principle of minimizing intra-zone differences while maximizing inter-zone differences, and finds wide applications in geography, environmental science, e…

Postprint: A Multi-scale Comprehensive Classification Method for Landform Morphology

Yang Weitao, Sun Jianguo, Ma Hengli
2022-03-28 ChinaXiv: chinaxiv-202203.00106

Geomorphological objects often exhibit significant size disparities, spanning specific spatial scales. Existing automatic classification methods for geomorphological forms have not adequately accounted for this characteristic, thereby constraining classification accuracy. By employing the size of ge…

Spatiotemporal Variation Characteristics of Soil Moisture and Its Influencing Factors in the Xiangride-Qaidam River Basin: Postprint

Mengyuan Cheng, Cao Guangchao, Zhao Meiliang
2022-03-28 ChinaXiv: chinaxiv-202203.00107

Soil moisture, as a critical factor of the ecological environment, serves as an important indicator for soil monitoring and ecological environmental change. Based on MOD11A2 LST and MOD13A2 NDVI data, this study analyzes the spatiotemporal distribution characteristics of soil moisture and its influe…

Effects of Different-Aged Abandoned Cropland on Soil Moisture and Species Diversity in the Minqin Qingtu Lake Area (Postprint)

Wang Jia, Tian Qing, Wang Lide
2022-03-28 ChinaXiv: chinaxiv-202203.00108

Using a space-for-time substitution approach, we investigated and analyzed soil moisture dynamics and vegetation succession characteristics across abandoned croplands of varying abandonment ages (1, 2, 4, 8, 13, 20, 30, 40 years and CK) in the Qingtu Lake area of Minqin. The results indicated that: …

Vegetation Cover Dynamics and Their Driving Factors in the Oasis-Desert Ecotone: A Case Study of Cele, Xinjiang (Postprint)

Cao Yongxiang, Mao Donglei, Xue Jie
2022-03-28 ChinaXiv: chinaxiv-202203.00085

The oasis-desert ecotone is an ecological buffer zone between oasis and desert ecosystems, playing a crucial ecological role in maintaining oasis stability and preventing wind erosion. Taking the Cele Oasis-Desert Ecotone as an example, this study selected Landsat remote sensing imagery data, meteor…

Effects of Conservation Tillage on Soil N2O Emissions from Cropland in the Semi-arid Loess Plateau Region (Postprint)

Du Mengyin, Yuan Jianyu, Li Guang
2022-03-28 ChinaXiv: chinaxiv-202203.00087

Nitrous oxide (N2O) is one of the important greenhouse gases in the atmosphere and has attracted considerable attention in the context of global climate warming, with farmland soil being its primary emission source. Among the numerous factors affecting N2O emissions from farmland, tillage practices …

Soil Salinity Accumulation Characteristics During Non-irrigation Season in Long-term Drip-irrigated Cotton Fields (Postprint)

Tan Mingdong, Wang Zhenhua, Wang Yue
2022-03-28 ChinaXiv: chinaxiv-202203.00088

The movement and variation characteristics of soil water and salt during freeze-thaw processes in the non-irrigation season directly affect spring crop irrigation decisions. This study conducted field sampling and monitoring of six cotton field plots with different drip irrigation years in the Xinji…

Postprint of Soil Nutrient and Stoichiometric Characteristics of Russian Olive Shelterbelt in the Kubuqi Desert

Shi Shiling, Xiaomeng Ren, Zhang Xiaowei
2022-03-28 ChinaXiv: chinaxiv-202203.00090

To investigate the soil nutrient and stoichiometric characteristics of Elaeagnus angustifolia shelterbelts on the northeastern edge of the Kubuqi Desert, and to provide a theoretical basis for the sustainable utilization of desert shelterbelts, we selected 30 m × 30 m representative sample plots in …

Variation Characteristics of Soil Extracellular Enzyme Activity and Stoichiometry During Biological Soil Crust Formation on the Loess Plateau (Postprint)

Yao Hongjia, Baorong Wang, An Shaoshan
2022-03-28 ChinaXiv: chinaxiv-202203.00091

Biological soil crusts play crucial roles in enhancing soil resistance to water and wind erosion and improving soil nutrient conditions. Soil extracellular enzyme activity can serve as a microbial indicator of soil biochemical reaction intensity and is of great significance for understanding nutrien…

Analysis of Spatiotemporal Variation in Water Resource Security Based on Agricultural Water Footprint: A Case Study of Hotan Region, Xinjiang (Postprint)

Zhang Lili, Deng Xiaoya, Long Aihua
2022-03-28 ChinaXiv: chinaxiv-202203.00093

The Hotan region is a typical inland arid area, and studying regional water resource security is of great significance for guiding water resource development and utilization, and promoting the sustainable development of socio-economy and water resources. Based on the water footprint theory, this pap…

Hydrochemical Characteristics and Water Quality Assessment of Groundwater in the Plain Area of the Turpan Basin (Postprint)

Bai Fan, Zhou Jinlong
2022-03-28 ChinaXiv: chinaxiv-202203.00094

To investigate the hydrochemical characteristics and water quality status of groundwater in the plain area of the Turpan Basin, 44 sets of groundwater quality monitoring data (33 sets of phreatic water and 11 sets of confined water) were selected based on the comprehensive groundwater pollution surv…

Lake Balkhash Water Balance Variations and Their Influencing Factors over the Past 60 Years: Postprint

Wang Zheng, Huang Yue, Liu Tie, Zhong Ruisen
2022-03-28 ChinaXiv: chinaxiv-202203.00096

Based on hydrological observation and remote sensing monitoring data, this study obtains information on the area and water level changes of Lake Balkhash over the past 60 years, reconstructs the time series of lake water volume changes, and identifies the characteristics of water volume variations i…

Spatiotemporal Variation and Contribution Analysis of Land Surface Temperature in the Tianshan North Slope Urban Agglomeration: Postprint

Hongwu Liang, Alimjan Kasim, Zhao Hemiao
2022-03-28 ChinaXiv: chinaxiv-202203.00097

The accelerated advancement of urbanization has intensified land use changes, consequently leading to increasingly prominent urban thermal environment issues. Based on MYD21A2 land surface temperature data from the summers of 2005 and 2018, spatial statistical methods were employed to analyze the sp…

Snowmelt-Coupled Xin'anjiang Model for Runoff Simulation in Arid Regions: A Postprint

Zhang Meijie, Lü Haishen, Liu Di
2022-03-28 ChinaXiv: chinaxiv-202203.00098

Within the Xiying River basin above the Jiutiaoling Station, daily data from gridded precipitation and air temperature datasets for the period 2011–2018 were utilized to develop a method for correcting anomalous gridded precipitation points through exploration of the precipitation-runoff causal rela…

Postprint: Applicability Assessment of TIGGE Precipitation Forecasts in Arid and Semi-Arid Regions of China

He Chaolu, Lü Haishen
2022-03-28 ChinaXiv: chinaxiv-202203.00099

As an important component of the currently most authoritative dataset for medium-range ensemble forecasting, the applicability of TIGGE precipitation products in the arid and semi-arid regions of China requires further investigation. Based on observed precipitation data from 2015–2017 in the arid an…

Spatiotemporal Characteristics and Trend Analysis of Precipitation in the Aral Sea Basin: Postprint

Wang Haoxuan, Huang Feng
2022-03-28 ChinaXiv: chinaxiv-202203.00100

Based on the monthly precipitation series of the Aral Sea basin from 1945 to 2019 derived from the CRU (Climate Research Unit) dataset, this study analyzed the spatiotemporal characteristics of annual precipitation variation, intra-annual distribution of precipitation, and complexity changes in prec…

Precipitation Geochemistry and Controlling Factors at the Koxkar Glacier Terminus, Tianshan Mountains: Postprint

Wang Jian, Han Haidong
2022-03-28 ChinaXiv: chinaxiv-202203.00101

Summer precipitation was sampled at the terminus of Koxkar Glacier on the southern slope of the Tianshan Mountains in an inland alpine region. Based on the analysis of ion concentrations, conductivity, and pH values, factor analysis, enrichment factors, and backward trajectory methods were employed …

How Relational Dependency Affects the Growth and Development of Global City Networks: A Case Study of Apple iPhone Suppliers (Postprint)

Liu Qing
2022-02-11 ChinaXiv: chinaxiv-202202.00016

Current urban network research exhibits a tendency to emphasize structural characteristic measurement while relatively neglecting impact mechanism analysis. Furthermore, in studies on urban network impact mechanisms, there is an overemphasis on theoretical qualitative macro-descriptions or conventio…

Postprint: Analysis of Multi-system Synergy Level, Spatio-temporal Evolution, and Mechanism of Rural Tourism Public Services in China

Zhang Xincheng
2022-02-11 ChinaXiv: chinaxiv-202202.00018

By constructing a five-element system coupling model, this study measures the coordination degree of rural tourism public information services, safety and security services, transportation convenience services, people-benefit and convenience services, and public administrative services across 30 pro…

Research on Rural Revitalization Pathways in Arid Areas Based on Resource and Environmental Carrying Capacity: A Case Study of Ningxia (Postprint)

Li Jin
2022-02-11 ChinaXiv: chinaxiv-202202.00019

Resource and environmental carrying capacity constitutes a critical constraint on regional socio-economic development in arid zones. Elucidating the status of resource and environmental carrying capacity and investigating the distribution characteristics of resources and environment along with exist…

Study on the Evolution of Economic Linkage Network Structure and Its Impact on Economic Growth in the Guanzhong Plain Urban Agglomeration (Postprint)

Ye Shanshan
2022-02-11 ChinaXiv: chinaxiv-202202.00020

This study employs urban flow intensity to modify the traditional gravity model for constructing an economic linkage matrix, and utilizes social network analysis methods to examine the evolutionary characteristics of the economic linkage network structure and its impact on economic growth in the Gua…

Research on Optimal Spatial Settlement Patterns in the Hilly-Gully Region of the Loess Plateau in Northern Shaanxi: A Case Study of Donggou, Mizhi County (Postprint)

Tian Darui
2022-02-11 ChinaXiv: chinaxiv-202202.00021

The hilly-gully region of the Loess Plateau constitutes a critical challenge for new urbanization practices in western China. In the absence of clarified regional characteristics, the intervention of modern urban-rural planning and design has generated substantial impacts on the local environment an…

Spatiotemporal Differentiation and Driving Factors of Green Development in Xinjiang's Urbanization (Postprint)

Zhang Junmin
2022-02-11 ChinaXiv: chinaxiv-202202.00023

As a key focus of the Western Development Strategy and a core area of the Belt and Road Initiative, Xinjiang's urbanization exhibits distinct regional characteristics and geopolitical attributes. Scientifically diagnosing and identifying the driving factors of green urbanization development can prov…

Ecosystem Service Trade-offs in the Spatial Restructuring of Grain Production on the Loess Plateau: A Case Study of Yulin City, Northern Shaanxi (Postprint)

Yang Haijuan
2022-02-11 ChinaXiv: chinaxiv-202202.00025

The restructuring of grain production space concentrates the principal contradictions in land system change; exploring the trade-off dynamics of ecosystem services during this process helps clarify the conflicts among food security, ecological restoration, and economic development, thereby promoting…

Spatiotemporal variation of forest land and its driving factors in the agropastoral ecotone of northern China Postprint

WANG Shiqing, TAO Zefu, SUN Piling, CHEN Sijia, SUN Huiying, LI Nan, SUN Piling
2022-01-30 ChinaXiv: chinaxiv-202202.00007

As an important natural resource, forest land plays a key role in the maintenance of ecological security. However, variations of forest land in the agropastoral ecotone of northern China (AENC) have attracted little attention. Taking the AENC as an example and based on remote-sensing images from 200…

Effects of Conservation Tillage on Water Storage, Moisture Conservation, and Yield in Dryland Wheat Fields in Longzhong: Postprint

Qi Xiaoping
2022-01-26 ChinaXiv: chinaxiv-202201.00094

To investigate the effects of conservation tillage on water storage and moisture conservation as well as yield formation in rainfed wheat fields on the Longzhong Loess Plateau. Based on a continuous 5-year field experiment, the effects of different tillage practices (conventional tillage T, straw mu…

Effects of Root Cutting and IBA Treatment on Root Quality and Seedling Growth of *Ammopiptanthus mongolicus* Postprint

Wang Jingjing
2022-01-26 ChinaXiv: chinaxiv-202201.00102

To address the forestry technical challenges of Ammopiptanthus mongolicus, characterized by long taproots, few fibrous roots, difficult seedling rooting, and low transplant survival rates, this study investigated different root pruning intensities combined with varying concentrations of hormone (IBA…

Postprint: Ecological Characteristics of Reed Populations in the Sandy Land on the Southern Margin of the Badain Jaran Desert

Liu Xin
2022-01-26 ChinaXiv: chinaxiv-202201.00103

Investigations were conducted on the modular characteristics, population age structure, dynamic features, and spatial distribution patterns of ramet populations of Phragmites australis naturally distributed in two sandy habitats (saline sandy land and ordinary sandy land) on the southern margin of t…

Floristic Composition, Distribution, and Resource Types of Annual Plants in the Deserts of Xinjiang (Postprint)

Jiaqian Du
2022-01-26 ChinaXiv: chinaxiv-202201.00105

Desert annual plants exhibit rapid growth rates and strong reproductive capacity, possessing significant forage, medicinal, and ecological value. Through literature review, verification of specimen collection records, and field surveys, this study clarifies the species richness, distribution pattern…

Postprint: Response of Soil Greenhouse Gas Emissions to Plastic Film Mulching in Cropping Systems in the Arid Region of Xinjiang

Wang Xuyang
2022-01-26 ChinaXiv: chinaxiv-202201.00106

Plastic mulching is an effective approach for improving crop yields in arid region farmlands and is widely applied in agricultural production. Investigating the response of soil greenhouse gas emissions to mulching under different cropping systems is of great significance for greenhouse gas mitigati…

Effects of Moisture on Soil Nitrogen Mineralization During Degradation Succession in Gahai Wetland (Postprint)

Song Liangcui
2022-01-26 ChinaXiv: chinaxiv-202201.00107

Moisture is the primary controlling factor of the nitrogen mineralization process in wetland soils and plays an important role in nitrogen cycling processes in wetland soils. Taking the Gannan Gahai Wetland as the study area, four degradation levels (Undegraded UD, Lightly Degraded LD, Moderately De…

Postprint: Water Consumption Characteristics and Evolution of Water Conveyance Methods in the Lower Reaches of the Tarim River

Zhou Long
2022-01-26 ChinaXiv: chinaxiv-202201.00109

Employing a combination of the water balance method, field investigation, and remote sensing imagery data, this study expounds upon the evolution of riverbed permeability performance and the water environment response characteristics under varying river channel water delivery methods following ecolo…

Analysis of Runoff Component Characteristics in Inland River Basins of Southwestern Tarim Basin under Climate Change: Postprint

Sun Congjian
2022-01-26 ChinaXiv: chinaxiv-202201.00112

Climate change has significantly impacted the water cycle in the high mountain regions of Central Asia, exacerbating regional water supply-demand conflicts. Understanding the characteristics of runoff components in inland rivers is crucial for water resource management. Based on meteorological and r…

Spatiotemporal Variations of Extreme Precipitation in the Guanzhong Plain and Their Relationship with Atmospheric Circulation (Postprint)

Ding Yingying
2022-01-26 ChinaXiv: chinaxiv-202201.00113

Based on daily precipitation data from 13 meteorological stations in the Guanzhong Plain from 1957 to 2019, various extreme precipitation indices were calculated using methods such as simple linear regression, Pearson correlation analysis, and wavelet coherence analysis, and their spatiotemporal var…

Applicability Assessment of Two Meteorological Datasets in Data-Scarce Regions: A Case Study of the Hutubi River Basin (Postprint)

Sun Mingyue
2022-01-26 ChinaXiv: chinaxiv-202201.00114

In data-scarce regions, the lack of observational data for precipitation, temperature, and other variables affects the accuracy of flood forecasting, thereby impacting flood control, drought resistance, water resources planning, and related efforts. Therefore, conducting applicability analysis of ex…