A Preliminary Analysis of Land Resource Constraints on Urban Expansion of Beijing Based on Land Supply and Demand

2012 ◽  
Vol 3 (3) ◽  
pp. 253-261 ◽  
Author(s):  
Fan Jie ◽  
Zhang Youkun
2021 ◽  
Vol 299 ◽  
pp. 113660
Author(s):  
Chuxiong Deng ◽  
Damei Zhu ◽  
Xiaodong Nie ◽  
Changchang Liu ◽  
Guangye Zhang ◽  
...  

2013 ◽  
Vol 838-841 ◽  
pp. 3115-3118
Author(s):  
Jian Ping Yang ◽  
Fan Ming Meng

Basing on the disequilibrium theory, taking use of SPSS software, taking advantaging of multiple linear regression methodology, this article analyzed the state of supply and demand of newly built commodity-housing market from1998 to 2011 in Xian, constructed the equation about land supply, housing price, load rate and housing-supply, and constructed the equation about per capita disposable income, and housing-demand. Basing on the supply-equation and demand-equation, this article obtained the state of supply and demand of new-built commodity- housing in Xian, at last, calculated the non-equilibrium degree and drew a conclusion.


2018 ◽  
Vol 10 (10) ◽  
pp. 3580 ◽  
Author(s):  
Xiaojuan Lin ◽  
Min Xu ◽  
Chunxiang Cao ◽  
Ramesh P. Singh ◽  
Wei Chen ◽  
...  

Due to urban expansion, economic development, and rapid population growth, land use/land cover (LULC) is changing in major cities around the globe. Quantitative analysis of LULC change is important for studying the corresponding impact on the ecosystem service value (ESV) that helps in decision-making and ecosystem conservation. Based on LULC data retrieved from remote-sensing interpretation, we computed the changes of ESV associated with the LULC dynamics using the benefits transfer method and geographic information system (GIS) technologies during the period of 1992–2018 following self-modified coefficients which were corrected by net primary productivity (NPP). This improved approach aimed to establish a regional value coefficients table for facilitating the reliable evaluation of ESV. The main objective of this research was to clarify the trend and spatial patterns of LULC changes and their influence on ecosystem service values and functions. Our results show a continuous reduction in total ESV from United States (US) $1476.25 million in 1992, to US $1410.17, $1335.10, and $1190.56 million in 2001, 2009, and 2018, respectively; such changes are attributed to a notable loss of farmland and forest land from 1992–2018. The elasticity of ESV in response to changes in LULC shows that 1% of land transition may have caused average changes of 0.28%, 0.34%, and 0.50% during the periods of 1992–2001, 2001–2009, and 2009–2018, respectively. This study provides important information useful for land resource management and for developing strategies to address the reduction of ESV.


2020 ◽  
Vol 12 (10) ◽  
pp. 4131
Author(s):  
Wenbo Cai ◽  
Tong Wu ◽  
Wei Jiang ◽  
Wanting Peng ◽  
Yongli Cai

Transboundary environmental problems caused by urban expansion and economic growth cannot be solved by individual cities. Successful intercity environmental cooperation relies on the clear identification and definition of the rights and obligations of each city. An Ecosystem services (ES) approach not only budgets the ES supply and demand of a city, but also defines the spatial relationships between Services Provisioning Areas (SPA) and Services Benefiting Areas (SBA). However, to date, quantitative studies integrating ES budgets and spatial relations have been scarce. This study integrates ecosystem services supply–demand budgeting with flow direction analysis to identify intercity environmental cooperation in the highly urbanized Yangtze River Delta (YRD) region of China for water-related ecosystem services (flood protection, erosion regulation and water purification). The results demonstrated that there were significant spatial mismatches in the supply and demand of three water-related ES among 16 core cities in the YRD region: five to six cities in the southern part of the region had significant service surpluses, while ten to 11 cities in the north–central part had significant service deficits. We then went on to offer definitions for Ecosystem Services Surplus City, Ecosystem Services Deficit City and Ecosystem Services Balance City, as well as Service Provisioning City, Service Benefiting City and Service Connecting City in which to categorize cities in the YRD Region. Furthermore, we identified two intercity cooperation types and two non-cooperation types. This framework can be used to promote ecological integration in highly urbanized regions to advance sustainable development.


2011 ◽  
Vol 383-390 ◽  
pp. 1629-1634
Author(s):  
Yi Yong Luo ◽  
Li Ting Zhang ◽  
Hao Zhang

Considering the increasingly tense relationship between construction land supply and demand, we study the inherent rules and the spatial evolution in construction land use. In order to solve the problem of parameter optimization effectively, we analysis the fundamental theory of Support Vector Machine and finally accomplish the combination of genetic algorithm and support vector machine. Meanwhile we apply this model to analysis the construction land use and propose a new model, which is based on the support vector machines with genetic algorithm, for construction land evolution. Taking Guandu district in Kunming, Yunnan as a case, we find out that the new model is far superior to recent models in terms of predicting accuracy, algorithm complexity and computational efficiency. And therefore, we believe that this is highly precise, practical and efficient model for forecasting construction land use and evolution.


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