Contents
2020
Volume: 22 Issue 10
15 Article(s)

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Construction of Technical System for National Urban Ecological Environment Comprehensive Monitoring
WANG Qiao, ZHAO Shaohua, FENG Hong'e, WANG Yu, BAI Zhijie, MENG Bin, and CHEN Hui
More and more people have paid attention to the severe problems of urban ecological environment in recent years, such as air pollution in key urban agglomerations, water pollution, urban black and odorous water, risk of drinking water source, urban heat island, soil pollution, municipal solid waste, and so on. As a vit
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1922 (2020)
Patterns of Phytoplankton Phenology and Its Response to Temperature of Water Surface in Lake Taihu based on MODIS Data
HONG Tianlin, LI Yunmei, LV Heng, MENG Bin, BI Sun, and ZHOU Ling
Due to the influence of water temperature and nutrient concentration, phytoplankton phenology can reflect the growth of phytoplankton and the changes of lake ecosystem. Because of the serious eutrophication in Lake Taihu, the effect of water temperature on phytoplankton growth is more and more significant. Thus, it is
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1935 (2020)
The Spatiotemporal Changes of Vegetation in Lakeshore of Dianchi Lake and Its Impact on Total Phosphorus Concentration in Dianchi Lake
ZHOU Ling, LI Yunmei, ZHAO Huan, FANG Shengzhong, YAN Xiang, and LV Heng
Dianchi Lake, the largest plateau freshwater lake in China, is an important part of the ecological security pattern in the upper reaches of the Yangtze River. In order to restore the ecology of Dianchi Lake and its lakeside, farmland along the lake has been converted to grasslands and forests on a large scale since 200
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1946 (2020)
Adaptive Threshold for Surface Shadow Detection of Black and Odor Water
XU Jiafeng, LI Yunmei, XU Jie, LEI Shaohua, BI Shun, and ZHOU Ling
The shadow on black and odor water interfere with the spectral information of the water surface and seriously affects the accuracy of water quality monitoring with high spatial resolution remote sensing data. Therefore, it is necessary to remove the shadow before evaluating river water quality. This paper tries to cons
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1959 (2020)
Urban Green Space Classification and Landscape Pattern Measurement based onGF-2 Image
WANG Xuemiao, MENG Qingyan, ZHAO Shaohua, LI Juan, ZHANG Linlin, and CHEN Xu
Urban vegetation is an important component of an urban ecosystem, which provides important ecological service including purifying urban air, regulating urban climate, and beautifying urban landscape. Different types of vegetation provide different ecological service. To date, there have been many studies on characteriz
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1971 (2020)
Analysis of the Temporal and Spatial Variation of Atmospheric Quality from 2015 to 2019 based on China Atmospheric Environment Monitoring Station
DONG Jiadan, CHEN Xiaoling, CAI Xiaobin, XU Qiangqiang, GUAN Yuting, LI Tinghui, LIU Shiyan, and CHEN Fang
After 2013, several serious haze pollution events in China have attracted wide attention from the public. Therefore, the Chinese government has developed a series of policies, measures, and laws for air pollution prevention and control. We select the air quality index and six key air pollutant observations in the natio
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1983 (2020)
Numerical Simulation and Comprehensive Identification of Potential Wind Corridors in Beijing
YANG Tushi, WANG Weiwen, CHANG Ming, and WANG Xuemei
From the perspective of local and micro scales, construction of ventilation corridor in urban area was proposed by optimized planning and architectural design in previous studies. However, for contemporary megacities and urban agglomerations, both urban heat island and pollutant transport may involve a larger scale of
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 1996 (2020)
Water Body Extraction of High Resolution Remote Sensing Image based on Improved U-Net Network
HE Hongshu, HUANG Xiaoxia, LI Hongga, NI Lingjia, WANG Xinge, CHEN Chong, and LIU Ze
There are two main methods of traditional water body extraction: a method based on spectral information and a method based on classification. Traditional water body extraction methods based on spectral information fail to take into account features such as water body shape, internal texture, water body size, and adjace
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2010 (2020)
A Near-surface Air Temperature Spatialization Method Integrating Landuse and Soil Moisture Products
GAO Liang, DU Xin, LI Qiangzi, WANG Hongyan, ZHANG Yuan, and WANG Siyuan
Air temperature is an important attribute for evaluating the living environment, and its studies and observations are closely related to human production and life. Air temperature observation data is of great significance for the study of hydrology, environment, ecology, and climate change. Traditional description of l
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2023 (2020)
Retrieval of Aerosol Optical Depth over Taiwan Island Using Visible Channels of Sentinel-3A OLCI
WANG Feng, WANG Xiaoqin, and DING Yu
OLCI (Ocean Land Colour Instrument) sensor, as a successor of MERIS (Medium Resolution Imaging Spectrometer) sensor, has better temporal resolution, spacial resolution and image width, so it has potential advantages in aerosol retrieval, but there are few studies on aerosol monitoring using OLCI data. In order to expan
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2038 (2020)
Land Type Interpretation Authenticity Check of Vector Patch Supported by Deep Learning and Remote Sensing Image
GUO Zihui, and LIU Wei
Spatial data quality check is important to guarantee the accuracy and reliability of remote sensing data. Current spatial data quality check mainly focuses on topological relationship, attribute consistency, and data correlation, ignoring the authenticity of land type interpretation in vector patches. Therefore, this p
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2051 (2020)
A Remote Sensing Method for Retrieving Chlorophyll-a Concentration from River Water Body
LIU Weihua, WANG Siyuan, MA Yuanxu, SHEN Ming, YOU Yongfa, HAI Kai, and WU Linlin
Chlorophyll-a (Chl-a) is an important indicator to evaluate water quality security. The accurate estimation of its concentration is of major significance to aquaculture development, aquatic ecosystem sustainability, and human drinking water safety. With the enhancement of the spatial and spectral resolution of earth-ob
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2062 (2020)
Coastal Wetlands Change Detection Combining Pixel-based and Object-based Methods
WU Ruijuan, HE Xiufeng, and WANG Jing
Coastal wetlands are dynamic and fragile ecosystems, and they have taken place obvious changes, which affected by siltation and erosion, coastal development and utilization, therefore it is of great practical significance to timely monitor coastal wetlands changes. Remote sensing change detection technology can obtain
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2078 (2020)
A Comparative Study on the Classification of GF-1 Remote Sensing Images for Zhoukou Urban under the Four Identical Condition
YE Jie, MENG Fanxiao, BAI Weiming, ZHANG Bin, and ZHENG Jinming
At present, due to different classification methods, softwares, and samples used for classification which could introduce various systematic errors, the majority of studies for comparing the advantages and disadvantages of pixel-based and object-based classification are unprecise to a certain degree. To make a better c
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2088 (2020)
Near Surface Air Temperature Estimation by Combining HASM with GWR Model on a Provincial Scale
ZHOU Jia, ZHAO Yapeng, YUE Tianxiang, and LU Tao
As a part of natural climate variability,Near surface air temperature is an indispensable parameter that drives the energy and water exchanges among the hydrosphere, atmosphere and biosphere. Spatially and temporally resolved observations of near surface air temperatures are essential for understanding hydrothermal cir
Journal of Geo-information Science
  • Publication Date: Oct. 25, 2020
  • Vol.22 Issue, 10 2098 (2020)