Journals
  Publication Years
  Keywords
Search within results Open Search
Please wait a minute...
For Selected: Toggle Thumbnails
Spatialization of Demographic Data at Medium Scale Based on Remote Sensing Images: Regarding Beijing-Tianjin-Hebei as an Example
WU Jiansheng;XU Duo;XIE Wudan;PENG Jian
   2015, 51 (4): 707-717.   DOI: 10.13209/j.0479-8023.2015.100
Abstract933)      PDF(pc) (5407KB)(641)       Save
This study selects Beijing-Tianjin-Hebei region as the study area and attempts to realize the population spatialization with the data of DMSP/OLS, land use, socio-economic and ecological environmental factors related to population distribution at the medium scale. Firstly, the authors obtain the census data of Beijing-Tianjin-Hebei region in 2010, and then calculated the probability coefficient based on these factors (selected roads, railways, rivers, slope, land use and nighttime light), and finally assign the census data to each pixel using all related variables and their probability coefficients with the software of geographic information system (GIS). City census data was chosen to test the research result, and the results showed that the accuracy rate of the population spatialization in the Beijing-Tianjin-Hebei region is more than 74% in the urban scale. The method for population spatialization can be well applied to the spatialization of demographic data at medium scale.
Reference | Related Articles | Metrics | Comments0
Urban Water Landscape Fragmentation and the Change of Ecological Values in Shenzhen
LIU Zhenhuan,WANG Yanglin,PENG Jian,LI You,WU Jiansheng
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract691)            Save
With the aid of theory of landscape ecology, analysis of traj ectories and assessment of ecosystem service, this paper takes the water body in Shenzhen as the research object, analyzing the dynamic process of water body fragment and the corresponding changes of the ecosystem service. The results show that: 1) the process of water body fragment is so clear that the shrink of water body is the main characteristic. During 2000 and 2006, rivers became segment and channelization, pond and wetland were shrinking. In addition, the processes of fragment are different between each kind of water body. 2) The endpoint of the trajectories of change of water is developed land, and the changing process from water to developed land impose the trend of fragmentation and shrinking. 3) Water fragmentation restricts the ecological service. The direct service value increases continuously, while the indirect service value decreases, which leads to the increase of the proportion of the direct service value.
Related Articles | Metrics | Comments0
Economic Value of Urban Ecosystem Services: A Case Study in Shenzhen
PENG Jian,WANG Yanglin,CHEN Yanfei,LI Weifeng,JIANG Yiyi
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract930)            Save
Based on research progress on economic value of ecosystem services, taking Shenzhen for instance, the authors analyze the functions of ecosystem services such as conditioning climate, fixing carbon and releasing oxygen, preserving soil, keeping waterhead, purifying environment, and restraining noises. Economic values of all the six kinds of ecological service functions are calculated. The results show that ecosystems in Shenzhen provide enormous ecological economic benefits with the total value of RMB 126292000000, which corresponds with the RMB 166524000000 of GDP of Shenzhen in 2000. Meanwhile, the importance of different ecosystem services in urban areas is different. The function of fixing carbon and releasing oxygen is the most important, the function of conditioning climate is the second, and the functions of keeping waterhead, preserving soil, purifying environment, and restraining noises are the last important. As for the case study in Shenzhen, the functions of purifying environment and restraining noises are in great need of protection in urban landscape management and ecological construction.
Related Articles | Metrics | Comments0
Research on Landscape Ecology and Sustainable Land Use
PENG Jian,WANG Yanglin,LIU Song,WU Jiansheng,LI Weifeng
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract295)            Save
Sustainable land use is always the research topic of land science and related disciplines. In this paper, we make research on sustainable land use under the guide of newly landscape ecology. It is a beneficial attempt to extend the research scope on sustainable land use. Based on the analysis of the relations hip between land, landscape and landscape ecology, we make a new annotation of the connotation of sustainable land use according to such landscape ecology theories as structure and function, ecological holism and spatial heterogeneity, hierarchy and scale, and landscape change and stability.
Related Articles | Metrics | Comments0
Research on Landscape Ecology and Sustainable Land Use
PENG Jian,WANG Yanglin,LIU Song,WU Jiansheng,LI Weifeng
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract743)            Save
Sustainable land use is always the research topic of land science and related disciplines. In this paper, we make research on sustainable land use under the guide of newly landscape ecology. It is a beneficial attempt to extend the research scope on sustainable land use. Based on the analysis of the relations hip between land, landscape and landscape ecology, we make a new annotation of the connotation of sustainable land use according to such landscape ecology theories as structure and function, ecological holism and spatial heterogeneity, hierarchy and scale, and landscape change and stability.
Related Articles | Metrics | Comments0
A Study of Landscape Diversity and Rural Industrial Structure
JING Juan,WANG Yanglin,PENG Jian
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract788)            Save
Landscape diversity reflects the integrated physical characters of rural area to some extent, while industrial structure reflects its social economic characters. Therefore the interrelated analysis between them will couple the physical environmental and social economic characters in the rural area, which is o f great importance to the integrated development in rural area. After expounding the key concepts and theories of landscape diversity and rural industrial structure, the interrelated analysis between them is emphasized on. It comes to conclusions that there are some direct correlations between them, and they progress synchronization in the course of historical progress. In addition, in the perspective of rural sustainable development, landscape diversity protection is consistent with the adjustment of rural industrial structure, and some probable methods for them are given.
Related Articles | Metrics | Comments0
Sustainable Tourism Development of Regional Culture Landscape from Landscape Ecology: the Case of Shaoxing
LIU Zhongwei,WANG Yanglin,PENG Jian,WANG Xiaodong
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract628)            Save
Sustainable tourism development of regional culture landscapes, not only comprises one important area of culture landscapes studies, but also is vital to realize tourism sustainability. The essence of sustainable tourism development of regional culture landscapes is constructing spatial heterogeneity and dynamically improving its function of landscape system. With the case study of Shaoxing City, the authors apply the theories and methods of lands cape ecology to sustainable tourism development of Shaoxing culture landscapes. There are three main aspects emphasized: to conserve and reasonably develop unit culture landscape; to construct spatial heterogeneity and improve its function; and to put forward suggestions for macro-ecological management of Shaoxing culture landscapes.
Related Articles | Metrics | Comments0
A Study on Shoaly Land in China
PENG Jian,WANG Yanglin
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract767)            Save
On the base of discussing about recent exploit and research progress on Shoaly Land, the authors put forward the frame of the research on Shoaly Land, in which the research on Shoaly Land is divided into two levels: basic research and application research. Basic research includes the researches on basic conception, continuous evolution, and exploitation theories of Shoaly Land. And application research can be divided into three parts: social research, economic research, and ecological research. In the end, it is brought forward that some items should be researched first, such as the research on conception, statistics unit, constant inspection, law control, management system, public participation, industry policy, resource evaluation, and environmental impact assessment of Shoaly Land exploitation.
Related Articles | Metrics | Comments0