Contents
2020
Volume: 22 Issue 3
27 Article(s)

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Uncertainty of the Morphological Feature Expression of Loess Erosional Gully Affected by DEM Resolution
LI Sijin, DAI Wen, XIONG Liyang, and TANG Guoan
Terrain expression of loess erosional gully is the base of the researches of gully erosion modeling and prediction, which also have a great significance in related fields of geoscience. The quantitative study of gully features based on Digital Elevation Model (DEM) can contribute to the research of morphological change
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 338 (2020)
Elevation Accuracy Evaluation and Correction of SRTM and ASTER GDEM in Shandong Province based on ICESat/GLAS
QIN Chenchen, CHEN Chuanfa, YANG Na, GAO Yuan, and WANG Mengying
Shuttle Radar Topography Mission(SRTM) and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) GDEM have a high spatial resolution and wide spatial coverage, which play an important role in many Earth researches. However, their error distributions are heterogeneous on different terrain types. In orde
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 351 (2020)
Accuracy Assessment of Local Slope Concave-convex Properties based on Multi-scale Gridded DEMs
WANG Chun, XU Yan, JIANG Ling, and ZHAO Mingwei
The accuracy of DEMs is the key issue for its quality and various applications. Theoretically, terrain morphology is the basis to derive the topographic information. Therefore, to establish the methodology of DEM's morphologic accuracy can promote the high-quality DEM productions and their widespread applications.
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 361 (2020)
Error Comparison among the DEM Datasets Made from ZY-3 Satellite and the Global Open Datasets
ZHAO Shangmin, CHENG Weiming, JIANG Jingtian, and SHA Wenjuan
Global open DEM datasets provide important data sources for digital topographic analysis. Compared to the existing global open DEM datasets, the DEM data made from ZY-3 Satellite have higher spatial resolution, wider coverage and better currency, which results to a great likelihood to produce a global DEM dataset with
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 370 (2020)
A Perceptual Hash Algorithm for DEM Data Authentication and Tamper Localization
ZHANG Xingang, YAN Haowen, and ZHANG Liming
As a type of fundamental and important geographic data, the integrity of DEM data cannot be ignored. The commonly used technology for data integrity authentication is mainly based on traditional cryptography and digital watermarking technology. The former is very sensitive to the change of every bit of data, suitable f
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 379 (2020)
Research on DEM Construction in Suburban Areas based on Multi-model Cooperation
ZHAO Mingwei, JIN Yonglin, JIANG Ling, WANG Chun, YANG Cancan, and XU Yan
Digital Elevation Model(DEM) is the digital expression of terrain surface morphology. As an important basic geographic information data, DEM has an important application in the field of natural and human sciences. Therefore, the construction of DEM data with high form accuracy and elevation accuracy has become a hot is
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 389 (2020)
Valley Spacing Character Information and Its Influencing Factors based on the Fourier Transform
CAI Shun, GENG Haopeng, ZHENG Weishan, and PAN Baotian
Valley spacing is an important characteristic to describe the distance between adjacent valleys. It can reflect the structural feature and spatial distribution of valleys. In this study, we took the Heihe Zhengyixia region and Lanzhou Dalingxian region as examples. We used the ArcGIS to resample the digital surface mod
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 399 (2020)
A Method of Saddle Point Extraction based on Contour Spatial Relationship
HUANG Nan, YANG Xin, and LIU Hailong
The saddle point is one of the important terrain feature points that reflects the fluctuation of the surface morphology. Accurate extraction of saddle points is beneficial to the analysis of spatial relationship and structural feature of terrain. Existing saddle point extraction methods are usually directly based on re
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 410 (2020)
The Extraction of Characteristic Elements of Mountain based on DEM
HU Jinlong, TANG Mengge, LUO Mingliang, WEI Lan, YAN Zihong, and QIN Zihan
As a vital source of spatial data, DEM plays an important role in the process of geomorphologic characteristics analysis. DEM provides us an opportunity to study the earth surface with an even broader perspective aided by digital terrain structure analysis. The terrain surface often can be regarded as a combination of
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 422 (2020)
Establishment and Feature Analysis of Loess Geomorphology Proximity Indexes based on DEM
LEI Xue, ZHOU Yi, LI Yang, and WANG Zetao
The gully source point is the most active part on the shoulder line. The spatial length of streamlines from the gully source point to the upstream watershed boundary line and the downstream gully line is an important identifications for spatial structure of the loess shoulder line, watershed boundary line and gully lin
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 431 (2020)
Study on the Singularity Strength of Topographic Anisotropy of Loess Tableland, Ridge, Hill in Loess Plateau based on Terrain Profile
CAO Jianjun, TANG Guoan, FANG Xuan, LIU Yongjuan, NA Jiaming, ZHU Ying, and LI Jinlian
The characteristics of topographic relief variation are diverse from one landform type to another in the Loess Plateau. Great differences of topographic relief variation exist in different directions, which is known as topographic anisotropy. As fractal theory and geomorphology research become increasingly cooperative,
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 442 (2020)
Loess Landform Classification based on Random Forest
CAO Zetao, FANG Zidong, YAO Jin, and XIONG Liyang
Landform classification is one of the most important steps tor eveal the mechanisms of surface matter flows and energy conversion, which could inform the scale and layout of human construction activities. However, traditional landform classification methods based on Digital Elevation Model (DEM) often use a small numbe
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 452 (2020)
Geomorphological Classification Research based on BEMD Decomposition
GU Wenya, MENG Xiangrui, ZHU Xiaochen, and QIU Xinfa
Geomorphology refers to the ups and downs of the terrain, that is, the shape of the surface. Geomorph-ological classification plays an important role in many application fields such as temperature, precipitation and solar irradiation. In this paper, the Digital Elevation Model(DEM) data of Fujian province with a spatia
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 464 (2020)
K-means Classifier for Automatic Slope Position Detection in Mountainous Areas
GAO Haifeng, GE Ying, ZHANG Jie, XIAO Shengchang, and CHEN Ke
The slope position has generally been applied in a wide range of soil and vegetation studies. The slope position is manually classified in a long history into five types such as valley, footslope, backslope, slope shoulder, and ridge. It leads to issues of low automation, low precision and time consuming. This paper pr
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 474 (2020)
Study on the Relationship between Terrain and Distribution of the Vegetation in Shennongjia Forestry District
ZHANG Xinghang, ZHANG Baiping, WANG Jing, YAO Yonghui, and YU Fuqin
The Shennongjia Forestry District is one of the areas with the highest biodiversity in China. The complex topography exerts great influence on vegetation distribution in this region. This paper used the maximum entropy model (MaxEnt), digital elevation data, vegetation distribution map, and field-surveyed data, to stud
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 482 (2020)
A Parallel Method of Surface Flow Dynamics Simulation based on CUDA
WU Qianjiao, and CHEN Yumin
Simulating the surface flow dynamics is of great importance in disaster prevention and mitigation, which could benefit the land remediation, regional planning, environmental protection and water resource management. Therefore, in this paper the Compute-Unified-Device-Architecture (CUDA) is embedded into the TIN-based s
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 505 (2020)
Urban Expansion Simulation and Early Warning based on Geospatial Partition and FLUS Model
ZHAO Linfeng, LIU Xiaoping, LIU Penghua, CHEN Guangzhao, and HE Jialv
The rapid urbanization has constantly changed the transformation of land resources. With rapid growth of economic and population, urbanization has also led to many ecological and environmental problems. Simulating the mechanism of urban expansion and providing early warning of the risk of urban land use change in the f
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 517 (2020)
Simulating Multiple Land Use Scenarios based on the FLUS Model Considering Spatial Autocorrelation
ZHANG Jingdu, MEI Zhixiong, LV Jiahui, and CHEN Jinzhao
The Future Land Use Simulation (FLUS) model is a new model for simulating multiple land-use changes, and has a broad application prospect. This paper improved the FLUS model by incorporating a spatial autocorrelation factor into the Artificial Neural Network (ANN) module of FLUS, selected thePearl River Delta region as
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 531 (2020)
Land Use Simulation of the City Clusters Around Poyang Lake based on Land Ecological Security Assessment
SHAN Luyi, WANG Haijun, ZHANG Bin, and PAN Peng
As China has been vigorously promoting the new-type urbanization and implementing spatial planning policies, city clusters have become the urbanization frontier. But the contradiction between economic development and ecological protection restricts the sustainable urbanization. As the basis of urban development, the ch
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 543 (2020)
Study on the Delimitation of Urban Growth Boundary based on FLUS Model and Kinetic Energy Theorem
HUANG Kang, DAI Wenyuan, HUANG Wangli, and OU Hui
:Delineation of urban growth boundary is an important means to prevent the disorderly spread of urban land, protect the ecological environment of the open space outside the cities, and realize the smart growth of cities, which is of great significance to the healthy and sustainable development of cities. Currently, the
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 557 (2020)
Land Use Optimization Configuration based on Multi-Objective Genetic Algorithm and FLUS Model of Agro-pastoral Ecotone in Northwest China
YANG Lu, XIE Yaowen, ZONG Leli, QIU Tian, and JIAO Jizong
:The ecological environment of the agro-pastoral ecotone in Northwest China is extremely fragile. Due to global warming, the frequent droughts in this region have seriously affected agriculture and animal husbandry, which is not conducive to the sustainable socio-economic development of the agro-pastoral ecotone there.
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 568 (2020)
Urban-agricultural-ecological Space Zoning based on Scenario Simulation
KE Xinli, XIAO Bangyong, ZHENG Weiwei, MA Yanchun, and LI Hongyan
The urban-agricultural-ecological space zoning (referred to as the "three zones") is the core content of land space planning. It is important for scientific and rational planning and using of limited land resources. The former researches set up various indicator systems for "three zones", mainly bas
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 580 (2020)
Demarcating of Permanent Prime Farmland for Synergy of Farmland Protection and Urban Expansion: A Case Study of Wuhan
HUANG Hui, and KE Xinli
Demarcating permanent prime farmland is an effective way to realize farmland protection, intensive land use and food security. With the challenging of rapid urban expansion, the completion between urban expansion and farmland protection is unavoidable. It is urgent to reasonably demarcating permanent prime farmland by
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 592 (2020)
Simulating Land Use Patterns of the Mid-Zhejiang Urban Agglomeration Considering the Effects of Urban Rail Transit
WANG Jiafeng, WANG Rong, FENG Yongjiu, LEI Zhenkun, GAO Chen, CHEN Shurui, JIN Yanmin, and ZHAI Shuting
Urban rail transit possesses significant impacts on land use change and urban development. This study applies Future Land Use Simulation Model (FLUS) to reproduce land use changefrom 2000 to 2010 in the Mid-Zhejiang urban agglomeration based on GlobeLand30 datasets. The simulation results in 2010 show that the FLUS mod
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 605 (2020)
MCES-CA based Urban Expansion Simulation of Hengyang City
HU Zui, and WANG Hui
Urban Expansion (UE) is a critical parameter to examine urbanization level. In fact, UE is often accompanied with people, strategies, and urban elements extending over the old edge of city. Hence, UE is a highly complex socioeconomic phenomenon. Dynamic models are very effective to reveal the features and mechanisms of
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 616 (2020)
Spatiotemporal Model Analysis of Land Change Process based on Nearest Spatiotemporal Distance
NIE Pin, LIANG Ming, LI Yujie, YOU Xinyan, and SUN Xiaojuan
Due to human activities and rapid urban expansion, land use/land cover has changed dramatically. The change has a great impact on the ecological environment and surface landscape. The change process of land use and cover change is not only affected by various factors such as nature and economy, but also an external rep
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 628 (2020)
Mapping Impervious Surface Dynamics of Guangzhou Downtown based on Google Earth Engine
LI Peilin, LIU Xiaoping, HUANG Yinghuai, and ZHANG Honghui
For assessing urbanization level and urban environment, the mapping of impervious surface has become a research hotspot. Compared with single-phase imagery, time series mapping can depict temporal trends, which is of great significance for monitoring urban expansion. Based on the Google Earth Engine platform, this pape
Journal of Geo-information Science
  • Publication Date: Mar. 25, 2020
  • Vol.22 Issue, 3 638 (2020)