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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
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Comprehensive Study on the Human Driving Forces of Cultivated Land and Construction Land Use Change in Hubei Province, China AgEcon
Xu, Xin-chuang; Cheng, Dong-lai; Liu, Cheng-wu.
Change trend of cultivated land in Hubei Province is analyzed. The years 1998-2003 are the reduction period of cultivated land; the years 2004-2007 are the increase period of cultivated land; the years 1988-2002 are the slow growth period of construction land; and the years of 2003 and 2007 are the increase period of construction land. Based on related social economic statistical data in 1988-2007, human driving forces on cultivated land and construction land in Hubei Province are analyzed quantitatively and comparatively by using SPSS software and mathematical statistical method. Result shows that driving forces have negative driving effect on cultivated land, and positive driving effect on construction land. Driving forces have significant differences of...
Tipo: Journal Article Palavras-chave: Cultivated land; Construction land; Factor analysis; Human driving force; China; Agribusiness.
Ano: 2010 URL: http://purl.umn.edu/93574
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Multi-time Scale Analysis on the Cultivated Land Quantity in China AgEcon
Liu, Zhiling; Sun, Yan.
This paper briefly introduces the concrete steps of EMD (Empirical Mode Decomposition) method, and applies EMD method into the multi-time scale analysis on fluctuation of cultivated land quantity and its driving force in China since 1949. We also reveal the fluctuation law in the amount of cultivated land quantity. At the same time, based on the fluctuation of different time scales, qualitative forecast on the fluctuation trend of cultivated land quantity in China in future is carried out in order to offer references for establishing prediction model of cultivated land quantity. Research result shows that downward trend of cultivated land quantity is inevitable in China in the future, showing a basic form of an exponential decline during a short period of...
Tipo: Thesis or Dissertation Palavras-chave: Cultivated land; EMD; Multi-time scale; Driving force; China; Land Economics/Use; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/53809
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O estado atual de conhecimentos sobre a cultura do guaraná. Repositório Alice
CORRÊA, M. P. F.; KATO, A. K.; ESCOBAR, J. R..
1984
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Guaraná; Fruta; Sistema de cultivo; Área cultivada; Produtividade; Paullinia cupana; Amazônia; Brasil; Fruits; Cropping systems; Cultivated land; Yields.
Ano: 1984 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394768
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Potencial de frutas e outros produtos alimentícios de origem vegetal, na região Norte. Repositório Alice
NAZARÉ, R. F. R. de; MELO, C. F. M. de; BARBOSA, W. C..
1984
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Fruta; Produto de origem vegetal; Produção; Rendimento de cultivo; Área cultivada; Amazônia; Brasil; Fruits; Plant products; Production data; Crops yield; Cultivated land.
Ano: 1984 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394763
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Stainability of Cultivated Land in Henan Province Based on Ecological Footprint AgEcon
Li, Ying-chao.
This paper summarizes the regional situation of Henan Province of China, and introduces the principle of ecological footprint mode, as well as computing formulas of ecological footprint and ecological capacity. According to the related data of Henan Province from 1998 to 2007, this paper firstly calculates the per capita ecological footprint and per capita ecological capacity of Henan Province. Result indicates that cultivated land in Henan Province shows ecological surplus with sustainable land use. And ecological surplus has increased since the year 2003. Secondly, dynamic analysis of ecological footprint of arable land is carried out in Henan Province. Thirdly, this paper also studies on the per capita ecological demand and supply in 18 districts and...
Tipo: Thesis or Dissertation Palavras-chave: Ecological footprint; Cultivated land; Sustainable utilization; China; Community/Rural/Urban Development; Environmental Economics and Policy; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/53591
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Variation of Cultivated Land Quantity in Coastal Cities and Its Driving Forces - A Case of Huludao City, China AgEcon
Li-juan, Tang; Lei, Lei; Ling, Cao.
Variation of cultivated land quality in 10 major cities and its driving forces are introduced in recent 10 years. And economic development and population growth are the common driving forces for the reduction of cultivated land in coastal cities. Among them, economic development is the main driving force. Taking Huludao City as an example, driving factors of cultivated land variation in Huludao City are studied by Principal Component Analysis according to the relevant statistical data in the year 1998-2007. Result shows that in recent 10 years, total cultivated land area has increased in Huludao City, especially in the years 1998-2002. Driving force of cultivated land variation in Huludao City can be summarized as economic growth, population growth and...
Tipo: Journal Article Palavras-chave: Coastal city; Cultivated land; Quantity variation; Driving force; Principal component analysis; China; Agribusiness.
Ano: 2010 URL: http://purl.umn.edu/93242
Registros recuperados: 6
Primeira ... 1 ... Última
 

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