نتایج جستجو برای: cultivated land

تعداد نتایج: 139197  

2008
Xiaochen Zou Ming Luo Wei Su Daoliang Li Yijun Jiang Zhengshan Ju Jun Wang

Land consolidation is the basis of making the land arrangement special plan, meanwhile, land consolidation sub area, ascertaining land consolidation item and setting land consolidation indices are mainly depended on land consolidation potentiality, so it is necessary to do this research. As the most important pattern of land consolidation, potential evaluation of cultivated land consolidation i...

Journal: :Sustainability 2023

Cultivated land quality is an essential agricultural resource and production element. To increase cultivated in a targeted way, it crucial to understand the features of regional elements that constrain its quality. In order diagnose restriction factors affecting improvement grades conduct quantitative analysis factors, index model was used this study analyze distribution characteristics East An...

Journal: :Remote Sensing 2015
Hanh Tran Thuc Tran Matthieu Kervyn

The main objective of this study is to assess the spatio-temporal dynamics of land cover/land use changes in the lower Mekong Delta over the last 40 years with the coastal Tran Van Thoi District of Ca Mau Province, Vietnam as a case study. Land cover/land use change dynamics are derived from moderate to high spatial resolution (Landsat and SPOT) satellite imagery in six time intervals ranging f...

2012
Quan Wu Zhiyuan Pei Fei Wang Hu Zhao Lin Guo Juanying Sun Lijuan Jia

Remote Sensing Application Centre (RSAC) has been working on monitoring the main crop cultivated areas as operational task and research project for several years.The main problems is that the time and features of background data used in sampling maybe produce system errors. The sampling method called stratified sampling adopted by RSAC is also used in this study. But there is an important diffe...

2015
Wei Song Xiangzheng Deng Enrico Sciubba

Since the implementation of market oriented economic reform in 1978, China has been on the track of rapid urbanization. The unprecedented urbanization in China has resulted in substantial cultivated land loss and rapid expansion of urban areas. The cultivated land loss due to urbanization not only threatens food security in China, but has also led to ecological system degradation to which close...

2016
Xiaobing Wang Futoshi Yamauchi Keijiro Otsuka Jikun Huang

This paper aims to examine the dynamics of land transactions, machine investments, and the demand for machine services using farm panel data from China. Recently, China's agriculture has experienced a large expansion of machine rentals and machine services provided by specialized agents, which has contributed to mechanization of agricultural production. On the other hand, the empirical results ...

2015
Peng Gao Xiang Niu Bing Wang Yunlong Zheng

Land use change is one of the important aspects of the regional ecological restoration research. With remote sensing (RS) image in 2003, 2007 and 2012, using geographic information system (GIS) technologies, the land use pattern changes in Yimeng Mountain ecological restoration area in China and its driving force factors were studied. Results showed that: (1) Cultivated land constituted the lar...

Journal: :Agronomy 2021

Cultivated Land Balance Policy (CLBP) has led to the “better land occupied and worse supplemented” program. At same time, current field-scale cultivated quality (CLQ) evaluation cannot meet work requirements of CLBP. To this end, study selected 24 newly added farmland in Fuping County performed eight different high farming layer construction experiments improve CLQ. A new comprehensive model wa...

2014
Jian Deng Youzhen Xiang Wenhui Hao Yongzhong Feng Gaihe Yang Guangxin Ren Xinhui Han

Food security is chronically guaranteed in Egypt because of the food subsidy policy of the country. However, the increasing Egyptian population is straining the food supply. To study changes in Egyptian food security and future food supply capacity, we analysed the historical grain production, yield per unit, grain-cultivated area, and per capita grain possession of Egypt. The GM (1,1) model of...

2015
Jinfeng Du Jean-Claude Thill Richard B. Peiser

a r t i c l e i n f o Keywords: Land use efficiency Land use productivity Land pricing Beijing China This paper analyzes how the newly introduced land pricing system affects urban land productivity in China, taking post-land-reform Beijing as an example. China has been developing its urban land market by building an effective pricing system. This study indicates that the effects of such pricing...

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