Dr. Jie Zhang Profile

Dr. Jie Zhang

at Nanjing Univ

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Author

Publications (10)

Proceedings Article | 7 August 2007 Paper

Analysis on the spatial structure and characteristics of the eminent tourism resources in south Jiangsu based on GIS

Yan Wang, Jie Zhang, Jiang Ran

Proceedings Volume 6754, 67540V (2007) https://doi.org/10.1117/12.764637

KEYWORDS: Geographic information systems, Roads, Nickel, Databases, Spatial analysis, Geography, Geoinformatics, Information technology, Data mining, Motion analysis

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Proceedings Article | 1 September 2005 Paper

Modeling the dynamics of urban sprawl and spatial landscape pattern in Beijing metropolitan area

Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Qingdong Shi, Guanghui Lv, Wei Gao

Proceedings Volume 5884, 58840Y (2005) https://doi.org/10.1117/12.613219

KEYWORDS: Agriculture, Ecosystems, Roads, Ecology, Statistical modeling, Climatology, Landsat, Imaging systems, Data modeling, Earth observing sensors

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Proceedings Article | 1 September 2005 Paper

Impact of urban sprawl on carbon uptake in Beijing metropolitan area

Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Qingdong Shi, Guanghui Lv, Wei Gao

Proceedings Volume 5884, 58840Z (2005) https://doi.org/10.1117/12.613220

KEYWORDS: Data modeling, Carbon, Ecosystems, Agriculture, Satellites, Magnesium, Vegetation, Photovoltaics, Roads, Soil science

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Proceedings Article | 22 December 2003 Paper

Landscape heterogeneity and net primary productivity (NPP) of mountain-oasis-desert ecosystems in western China

Jie Zhang, Xiaoling Pan, Zhiqiang Gao, Wei Gao, Suling Zhao, Qingdong Shi, Guanghui Lu

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.524183

KEYWORDS: Ecosystems, Vegetation, Carbon, Process modeling, Data modeling, Ecology, Geographic information systems, Satellites, Climatology, Near infrared

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Proceedings Article | 22 December 2003 Paper

Progress report of research on eco-environmental evolution, control, and adjustment for arid land in Western China

Xiaoling Pan, Wei Gao, Yingjun Ma, Jie Zhang, Qifeng Lu, Guanghui Lu, Weiqing Li, Qingdong Shi

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.511850

KEYWORDS: Climatology, Vegetation, Ecosystems, Climate change, Soil science, Carbon, Temperature metrology, Environmental sensing, Control systems, Ecology

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Proceedings Article | 22 December 2003 Paper

Responses of net primary productivity (NPP) in Xinjiang to climate changes from 1981-2000

Wei Gao, Zhiqiang Gao, Xiaoling Pan, James Slusser, Mingkui Cao, Jiaguo Qi, Jie Zhang, Xiwu Zhan, Yingjun Ma

Proceedings Volume 5153, (2003) https://doi.org/10.1117/12.511576

KEYWORDS: Climatology, Vegetation, Climate change, Satellites, Temperature metrology, Soil science, Environmental sensing, Photosynthesis, Earth observing sensors, Mathematical modeling

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Proceedings Article | 14 July 2003 Paper

Rates and patterns of change in two contrasting oasis agricultural landscapes in Xinjiang, China

Jie Zhang, Xiaoling Pan, Qingdong Shi, Guanghui Lu

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.466602

KEYWORDS: Agriculture, Ecology, Climatology, Ecosystems, Vegetation, Geographic information systems, Climate change, Fractal analysis, Landsat, Earth observing sensors

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Proceedings Article | 14 July 2003 Paper

Preliminary study on the relationship between temporal and spatial evolution of ecological landscape pattern and climate change in Xinjiang, China

Xiaoling Pan, Xunbin Zeng, Jie Zhang, Qingdong Shi, Qing He, Qincheng Chao, Jiping Chao

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.466608

KEYWORDS: Climatology, Vegetation, Climate change, Ecosystems, Temperature metrology, Reflectivity, Humidity, Fluctuations and noise, Positive feedback, Meteorology

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Proceedings Article | 14 July 2003 Paper

Vegetation evolution in arid land of western China

Qingdong Shi, Guanhui Lu, Jidong Xiao, Xiaoling Pan, Jie Zhang, Liang Ji, Shunli Chang

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.466713

KEYWORDS: Vegetation, Image classification, Climatology, Remote sensing, Environmental sensing, Spatial resolution, Reflectivity, Classification systems, Climate change, Near infrared

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NDVI(Normalized Difference Vegetation Index) values range from -1.0 to +1.0, areas with NDVI < 0 rarely contain any vegetation, while NDVI >0.6, vegetation cover reaches 100%. The FVC (Fractional Vegetation Cover) values range from 0 to +1.0. Above this threshold the fractional vegetation cover increases approximately as the square of the NDVI, and reaches 100% at an upper NDVI threshold, which is considerably less than 1.0. In arid and semi-arid regions, FVC is superior to NDVI. In this article we got the classification rules by using the resolution 1km FVC combining with DEM (Digital Elevation Model) to classify the vegetation types in arid parts of western China. This classification system was used to classify all FVC images of the resolution 8km*8km from 1982a to 2000a, in this way, we got the classification maps of vegetation for every year. From these classification maps we calculated three majority maps from 1982-1989a, 1990-1995a and 1996-2000a. Supported by software ARC/INFO allowed us to decided wheter cells were degraded or improved after comparing every cell value at same location in three serial maps and then getting the evolution map of vegetation. The main results are as follows: 1) the vegetation in all of arid west China has increased; 2) the vegetation was increased and the rate is higher than in all study area; cells showing improvement in mountainous areas are almost equal to cells showing degradation3) there were two types of improvement patches; the oasis patch increases around old oases and the plain sparse desert patch has also increased; 4) degradation patches appear more frequently in the lower reaches of the Tarim River, in all reaches of Cherchen River, the Jungger basin and to the south of Alxa Right County of Inner Mongolia; 5) in mountainous areas, most of the improvement cells took place in the south of the Tianshan mountains and Pamir high plain, degradation cells are located on the slope of the north Kunlun mountains as a long narrow region and big patch assembled in the Aljin Mountains and the north slope of the Qilian Mountains.

Proceedings Article | 14 July 2003 Paper

Oasis-desert landscape heterogeneity and spatial scaling of Fukang transect in Xinjiang, China

Jie Zhang, Xiaoling Pan, Qingdong shi, Guanghui Lu

Proceedings Volume 4890, (2003) https://doi.org/10.1117/12.466601

KEYWORDS: Ecosystems, Fractal analysis, Vegetation, Ecology, Climatology, Geographic information systems, Image processing software, Analytical research, Astatine, Environmental sensing

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Showing 5 of 10 publications

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