Research on Healthy Evolution and Driving Mechanism of Cultivated Land Utilization System in Chongqing Based on PSR-TOPSIS Model

2020 ◽  
Vol 2 (4) ◽  
pp. 149-165
Author(s):  
You Chang ◽  
Li Qiang ◽  
Li Wenrui ◽  
Xu Bin
Keyword(s):  
Driving Mechanism ◽  
Cultivated Land ◽  
Land Utilization ◽  
Topsis Model

scholarly journals The Spatial and Temporal Characteristics of Cultivated Land Utilization in Chengdu-Chongqing Urban Agglomeration

2018 ◽  
Vol 175 ◽  
pp. 04001
Author(s):  
Xiao Yuejie ◽  
Tang Honga
Keyword(s):  
Comprehensive Evaluation ◽  
Dynamic Change ◽  
Efficiency Index ◽  
Urban Agglomeration ◽  
Utilization Efficiency ◽  
Cultivated Land ◽  
Land Utilization ◽  
Ecological Benefits ◽  
Ecological Benefit ◽  
Environment Control

Based on the data of economic, social and ecological benefits of cultivated land in Chengdu-Chongqing urban agglomeration from 2005 to 2014, this paper applies multi-factor comprehensive evaluation model and ArcGIS spatial analysis method to explore the dynamic change and regional difference of the cultivated land use efficiency of Chengdu-Chongqing urban agglomeration. The results showed that the overall efficiency index of cultivated land utilization in Chengdu-Chongqing urban agglomeration, except the economic benefit index, is rising steadily year by year. Among them, the fluctuation of ecological benefit is the most significant, and in 2010 and 2013, there appeared obvious trough. The utilization efficiency of cultivated land in different cities is relatively large, and in terms of distribution pattern, northwest is high, southeast low. The farmland utilization comprehensive efficiency high value district is Ziyang city, Chengdu city and Meishan city. In the future, the Chengdu-Chongqing urban agglomeration should pay more attention to the improvement of agro-ecological environment, control the application of pesticides and fertilizers, and promote the coordinated development of the economic, social and ecological benefits of cultivated land.

scholarly journals Temporal-Spatial Differentiation and Optimization Analysis of Cultivated Land Green Utilization Efficiency in China

Land ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 158 ◽  
Author(s):  
Qianru Chen ◽  
Hualin Xie
Keyword(s):  
Influencing Factors ◽  
Carbon Emissions ◽  
Spatial Differentiation ◽  
Utilization Efficiency ◽  
Added Value ◽  
Scale Model ◽  
Eastern Region ◽  
Cultivated Land ◽  
Land Utilization ◽  
Extension System

Cultivated land is closely related to national food security, rural economic development and social stability. The cultivated land pollution and carbon emissions caused by chemical fertilizers, pesticides, film residues, etc., in the process of cultivated land utilization pose a serious threat to the cultivated land ecosystem in China. The comprehensive analysis on the cultivated land green utilization efficiency (GUECL), its influencing factors, and optimization direction provides a valuable basis for the green utilization of cultivated land. Based on a panel data of 30 provinces (cities or districts) in China from 2001 to 2016, the GUECL in China under the constraints of pollution and carbon emissions was measured by using a super-efficient SBM-VRS (slack based model-variable return to scale) model. The influencing factors and optimization directions of the GUECL were analyzed through the Tobit model and slack values, respectively. The results show that the GUECL in China rose with fluctuations from 2001 to 2016. Since 2014, the eastern region has surpassed the western region and has become the region with the highest mean GUECL value. The room for resource conservation and pollution reduction varies in different regions of China. Farmers’ dependence on cultivated land and agricultural added value are positively related to the GUECL in China. Farmers’ occupational differentiation, agricultural machinery density, and agricultural disaster rate have had negative effects on the GUECL in China. The loss of the GUECL in China is mainly due to the redundancies of land input, pollution emission, and mechanical input. By analyzing these influencing factors and optimization directions, it is concluded that improving rural land transfer market and agricultural infrastructure construction, establishing a new agricultural technology extension system, and vigorously cultivating new professional farmers are the targeted measures to improve the GUECL.

scholarly journals Demography, Land Utilization and Livelihoods in Sarangkot Village Development Committee of Kaski District, Nepal

2014 ◽  
Vol 13 ◽  
pp. 22-32
Author(s):  
Narayan P. Bhusal
Keyword(s):  
Agricultural Production ◽  
Poverty Alleviation ◽  
Economic Welfare ◽  
Cultivated Land ◽  
Land Utilization ◽  
Economic Activities ◽  
Land Use Pattern ◽  
Food Sufficiency ◽  
Development Committee ◽  
Village Development Committee

Poverty alleviation has always remained as a major challenge for overall development in Nepal and Sarangkot Village Development Committee (VDC) in Kaski district also is under such circumstances where tourism and other off farm economic activities would be the successful vehicles for overall development. Availability of better demographic conditions, sustainable agricultural production system and proper utilization of existing resources for the development of off-farm economic activities are the important livelihood assets. It is in this light this paper is trying to present the demographic conditions, land use pattern, agricultural production from the cultivated land, livestock raising and food sufficiency from the production of land in Sarangkot VDC. As the survey result indicated that the food sufficiency from the production of land is not sufficient in order to maintain the livelihood conditions of the local people. Therefore, this paper also deals about the available off-farm economic activities that are supporting for the economic welfare of the people.DOI: http://dx.doi.org/10.3126/ttp.v13i0.11543The Third Pole Vol. 13, 2013page : 22-32

Research on Land Utilization and Cultivated Land Protection in Urban and Rural Planning

2011 ◽  
Vol 347-353 ◽  
pp. 1816-1819
Author(s):  
Chun Yan Guo ◽  
Ting Wan
Keyword(s):  
Rural Planning ◽  
Cultivated Land ◽  
Land Utilization ◽  
Rapid Urbanization ◽  
Land Protection ◽  
Economic Construction ◽  
Cultivated Land Protection

Starting from analyzing current land utilization in China, this paper tries to find the related problems and their causes. The approaches to the saving and intensification of land utilization are suggested in economic construction, urbanization, and cultivated land protection in respects of theory, technology and administrative policies, to offer effective support for rapid urbanization, modernization and marketing and safeguarding of land utilization.

scholarly journals Exploring a Moderate Fallow Scale of Cultivated Land in China from the Perspective of Food Security

2019 ◽  
Vol 16 (22) ◽  
pp. 4329 ◽  
Author(s):  
Lu ◽  
Wang ◽  
Yang ◽  
He ◽  
Su
Keyword(s):  
Food Security ◽  
Grain Yield ◽  
Carrying Capacity ◽  
Large Population ◽  
Living Standard ◽  
Yield Reduction ◽  
Primary Concern ◽  
Productive Capacity ◽  
Cultivated Land ◽  
Land Utilization

Food security remains a primary concern because of the large population and scarce land resources in China, and it is a core task to determine the appropriate proportion and scale of fallowing for fallow systems. The aim of this study was to systematically estimate the grain production potential (GPP) of existing and unexcavated cultivated land due to land use change from 1990 to 2017 and calculate the theoretical fallowing scale by using a population carrying capacity model. The reserved GPP from cultivated land to be excavated was 7470 × 104 t in China, and the GPP stored by the change in grain yield per unit, multiple crop index (MCI) decline, and agricultural structure adjustment were 921 × 104 t, 4321 × 104 t, and 7760 × 104 t, respectively, and the lost GPP caused by construction land expansion was 5287 × 104 t. The population carrying capacity of cultivated land in China was estimated to be 1.469 to 1.515 billion in 2017 on the basis of the national average living standard. The proportion of the population that could be fed more was between 6.28% and 9.54% depending on the number of people included, which provided an opportunity to implement the fallowing system in China. Meanwhile the proportions of the theoretical fallow scale were 6.28% and 9.54%, and the fallow scale ranged from 850 × 104 hm2 to 1296 × 104 hm2 under the premise of fully tapping the potential of cultivated land. In addition, taking the decline in MCI as an example, the grain yield reduction was equivalent to the grain yield of 829 × 104 hm2 of newly reclaimed cultivated land over the past 30 years, which saved 621.48 billion yuan. The costs and benefits when formulating relevant policies of land utilization should be considered, and exploiting the productive capacity of cultivated land that exists is better than reclaiming new cultivated land.

Sign in / Sign up

Export Citation Format

Share Document