Scale effect analysis of driving forces of arable land of Fujian province

2007 ◽  
Author(s):  
Bingwen Qiu
Keyword(s):  
Scale Effect ◽  
Driving Forces ◽  
Arable Land ◽  
Fujian Province ◽  
Effect Analysis

scholarly journals Spatiotemporal Characteristics and Driving Force Analysis of Flash Floods in Fujian Province

2020 ◽  
Vol 9 (2) ◽  
pp. 133 ◽  
Author(s):  
Junnan Xiong ◽  
Quan Pang ◽  
Chunkun Fan ◽  
Weiming Cheng ◽  
Chongchong Ye ◽  
...  
Keyword(s):  
Driving Forces ◽  
Flash Flood ◽  
Principal Component ◽  
Flash Floods ◽  
Fujian Province ◽  
Spatiotemporal Characteristics ◽  
Middle Mountains ◽  
Driving Force Analysis ◽  
Economic Development Model ◽  
The Impact

Flash floods are one of the most destructive natural disasters. The comprehensive identification of the spatiotemporal characteristics and driving factors of a flash flood is the basis for the scientific understanding of the formation mechanism and the distribution characteristics of flash floods. In this study, we explored the spatiotemporal patterns of flash floods in Fujian Province from 1951 to 2015. Then, we analyzed the driving forces of flash floods in geomorphic regions with three different grades based on three methods, namely, geographical detector, principal component analysis, and multiple linear regression. Finally, the sensitivity of flash floods to the gross domestic product, village point density, annual maximum one-day precipitation (Rx1day), and annual total precipitation from days > 95th percentile (R95p) was analyzed. The analytical results indicated that (1) The counts of flash floods rose sharply from 1988, and the spatial distribution of flash floods mainly extended from the coastal low mountains, hills, and plain regions of Fujian (IIA2) to the low-middle mountains, hills, and valley regions in the Wuyi mountains (IIA4) from 1951 to 2015. (2) From IIA2 to IIA4, the impact of human activities on flash floods was gradually weakened, while the contribution of precipitation indicators gradually strengthened. (3) The sensitivity analysis results revealed that the hazard factors of flash floods in different periods and regions had significant differences in Fujian Province. Based on the above results, it is necessary to accurately forecast extreme precipitation and improve the economic development model of the IIA2 region.

The Anthropogenic Factors on Urban Growth: An Empirical Quantification in China

2012 ◽  
Vol 518-523 ◽  
pp. 6042-6049 ◽  
Author(s):  
Xue Zhu Cui ◽  
Yao Wu Wang ◽  
Yuan Chang
Keyword(s):  
Urban Growth ◽  
Driving Forces ◽  
Arable Land ◽  
Urban Land Use ◽  
Effective Control ◽  
Anthropogenic Factors ◽  
Affecting Factors ◽  
Management Options ◽  
Rapid Urbanization ◽  
Industry Development

The rapid urbanization in China has caused significant urban land use changes and extensive urban growth these years. That has led to a dramatic decrease in arable land and would challenge the national food security. To understand the anthropogenic driving forces of urban growth and find out effective control methods, this study established the Hierarchical Liner Model (HLM) to explore the influence of such factors including society and economy, population, and industry development. On the base of factor analysis and HLM, the decomposition of the affecting factors for urban growth was performed, it visually shows that the social retail goods, public transit passengers, and nonagricultural populations significantly drove the urban growth in China; the tertiary industry development has weak effects on urban growth. By weighting the role of the anthropogenic factors on urban growth, some advices were given at last, and it could provide possible management options for the government to mitigate the excessive urban growth in the near future.

The Study on Dynamic Change of Cultivated Land Resources and Driving Forces - A Study Case of Lixian County, Hebei Province

2014 ◽  
Vol 707 ◽  
pp. 232-236
Author(s):  
Can Zhang ◽  
Hui Chun Shi ◽  
Xia Xia Lv
Keyword(s):  
Driving Forces ◽  
Dynamic Change ◽  
Arable Land ◽  
Reduction Rate ◽  
Principal Component ◽  
Economic Factor ◽  
Cultivated Land ◽  
Land Resources ◽  
Annual Reduction ◽  
Statistical Yearbook

In this paper, Lixian County 2001-2010 dynamic changes of cultivated land resources were studied. Studies have shown that: the past 10 years the average annual reduction rate of 0.72% Lixian County arable land, and the reduction since 2002, much faster, In the spatial region, most dramatic change is more economically developed society Liwu Town, Dabaichi Town, Xinxing Town and Liushi Town. According to the statistical Yearbook 2001-2010 review, we select factor and use principal component analysis. The main driving factors of impacting Lixian County arable land resources change are economic factor, demographic factor and progress in agricultural technology factor.

scholarly journals Agricultural land losses aper 1990 in the Liberec Region

Geografie ◽  
2018 ◽  
Vol 123 (2) ◽  
pp. 253-278 ◽  
Author(s):  
Zbyněk Janoušek
Keyword(s):  
Real Estate ◽  
Large Scale ◽  
Agricultural Land ◽  
Driving Forces ◽  
Arable Land ◽  
The State ◽  
Identification System ◽  
Regional Structure ◽  
Political Factors ◽  
Real Estate Register

The use of Czechia’s landscape was repeatedly changed, especially by political factors. After 1989, there were large-scale processes of property return, privatization and transformation of the economy and society. In 2003, before entry into EU, approximately 300,000 hectares of agricultural land were not used economically. This was evidently an impact of a tremendous fragmentation of the holdings in the early 1990s as well as large differences between the structure of owners of land and its real users (tenants). A mere 62% of arable land (and 78% of agricultural land in all), registered in the Cadastre of Real Estate (register of owners) is also included in the Land Parcel Identification System (register of users). This disharmony between the cadastral data and the state in the terrain prompted us to focus our attention on this state. We analyze the driving forces which brought it about as well as the size and regional structure of such differences.

scholarly journals Intensity and Driving Forces of Land Abandonment in Eastern Poland

2020 ◽  
Vol 10 (10) ◽  
pp. 3500 ◽  
Author(s):  
Wojciech Zgłobicki ◽  
Kamil Karczmarczuk ◽  
Bogusława Baran-Zgłobicka
Keyword(s):  
Land Use ◽  
Rural Areas ◽  
Agricultural Production ◽  
Agricultural Land ◽  
Environmental Changes ◽  
Driving Forces ◽  
Arable Land ◽  
Land Abandonment ◽  
Farm Size ◽  
Study Objective

Agricultural land is an important natural resource and forms the basis for food production. Global and local socio-economic and environmental changes are often the driving forces of changes in land cover and land use. Land abandonment in rural areas is one of the processes observed in Europe today and usually leads to increased afforestation. The intensity of this process in Central Europe is linked to the political and economic changes that took place at the end of the 20th century. The study objective was to identify the natural and socio-economic factors of this process in Lublin Province—a major region of agricultural production in Poland. From 1990 to 2018, over 130,000 ha were excluded from agricultural use, which represents 7% of the arable land in 1990. Land abandonment showed considerable spatial differences when comparing different counties: its magnitude ranged from 4% to 13% of the county area. At the same time, due to the specific type of land use in the province (small farm holdings divided into several fields), the intensity of land abandonment was underestimated when based on overview data (CORINE). It was observed that the intensity of this process was correlated with the natural conditions (topography, soils) for agricultural production and the socio-economic characteristics (area of arable land, forest cover changes, farm size) of the counties as well as the absorption of Common Agricultural Policy funds.

scholarly journals Monitoring and Projecting Land Use/Land Cover Changes of Eleven Large Deltaic Areas in Greece from 1945 Onwards

2020 ◽  
Vol 12 (8) ◽  
pp. 1241
Author(s):  
Anastasia Krina ◽  
Fotios Xystrakis ◽  
Kostas Karantininis ◽  
Nikos Koutsias
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Urban Areas ◽  
Agricultural Land ◽  
Driving Forces ◽  
Arable Land ◽  
Land Use Land Cover ◽  
Anthropogenic Pressures ◽  
Composition And Structure ◽  
Economic Developments

Wetlands are areas of high biodiversity and provide many ecosystem services of high value. However, they are under constant threat from intense anthropogenic pressures, mainly agriculture intensification, urbanization, pollution, and climate change. The temporal and spatial patterns of land use/land cover (LULC) changes within eleven large wetlands in Greece were analyzed based on thematic maps generated from aerial orthophotos taken in 1945, 1975, and 2007. Socio-economic developments and the consequent need for more arable land and utilization of water resources are among the factors that mainly determine their evolution. In 2007, LULC classes related to wetland vegetation were reduced to one third as compared to 1945 and they were mainly replaced with croplands and urban infrastructures. Each of the different sub-periods that was considered (1945–1975 and 1975–2007) was distinguished by characteristic patterns of change. Agricultural land increased up to 42% from 1945 to 1975 and became the dominant LULC class in all deltaic areas but Evros. A considerable stability was observed for the period 1975–2007 for all LULC classed but it is remarkable the extent of urban areas that doubled. There is a tendency of landscape simplification and homogenization among the deltaic areas and the output of Markov chain analysis indicates that future composition of deltaic landscapes will be similar to the current one if the main driving forces remain constant. Changes in LULC composition and structure are also combined with coastal erosion in all deltaic areas. This is attributed to the modification of sedimentary deposits due to dam construction. The results summarize the change trajectories of the major deltaic areas in Greece from 1945 to 2007 thus offering a great outlook of changes that allows managers to understand how policies and socio-economic requirements affect the deltaic ecosystems and what decisions should be made to protect and enhance them.

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