نتایج جستجو برای: cultivated land

تعداد نتایج: 139197  

2016
Zhanqi Wang Bingqing Li

Land use change is one of the fundamental influence factors of human life and well-being. The land use change due to the unprecedented urbanization in China not only causes an increase of resource consumption and threatens food security, but also affects the people’s living standard which deserves our attention. This study aims to reveal the impacts of land use change on residents’ living stand...

2009
Pasquale Lucio Scandizzo Sara Savastano

of the paper The paper illustrates a theoretical model of real option value applied to the problem of land development. Making use of the 1998-2001 Kyrgyz Household Budget Survey, we show that when the hypothesis of decreasing return to scale holds, the relation between the threshold value of revenue per hectare and the amount of land cultivated is positive. In addition to that, the relation be...

2018
Christina Bogner Bumsuk Seo Dorian Rohner Björn Reineking

Many environmental data are inherently imbalanced, with some majority land use and land cover types dominating over rare ones. In cultivated ecosystems minority classes are often the target as they might indicate a beginning land use change. Most standard classifiers perform best on a balanced distribution of classes, and fail to detect minority classes. We used the synthetic minority oversampl...

Journal: :Remote Sensing 2018
Araya Z. Ghebreamlak Haruya Tanakamaru Akio Tada Bashir M. Ahmed Adam Khalid A. E. Elamin

In this study, a simple methodology for mapping the seasonal cultivated area of the Gash Delta Spate Irrigation System based on satellite images was developed. The methodology combined information from multiple bands to characterize the land surface in terms of spectral indices (e.g., Normalized Difference Vegetation Index (NDVI), and surface temperature (Ts)). Visual interpretations of a conve...

Journal: :Agriculture 2022

Cultivated land planting structure is directly related to China’s food security. The Central Rural Work Conference in 2021 pointed out that ensure security, attention should be paid the adjustment of structure. Therefore, it necessary explore whether tenure security has an impact on farmers’ cultivated non-grain behavior. Based micro survey data 550 farmers Guanzhong Plain, this paper explores ...

2017
Abdul Latif Khan Sajjad Asaf Ahmed Al-Rawahi In-Jung Lee Ahmed Al-Harrasi

Boswellia sacra, a frankincense producing endemic tree, has been well known for its cultural, religious and economic values. However, the tree has been least explored for the associated microsymbiota in the rhizosphere. The current study elucidates the fungal and bacterial communities of the rhizospheric regions of the wild and cultivated B. sacra tree populations through next generation sequen...

Journal: :Frontiers in Environmental Science 2023

The study of cultivated land use models is an important means to improve the benefit and promote sustainable land. rational optimization regional based on consideration background conditions development goals can provide a scientific basis for ensuring This constructed three-dimensional research framework "natural quality-utilization intensity-spatial layout" utilization pattern. Taking county ...

Journal: :Remote Sensing 2016
Zengxiang Zhang Na Li Xiao Wang Fang Liu Linping Yang

Although the mapping of spatiotemporal patterns of urban expansion has been widely studied, relatively little attention has been paid to detailed comparative studies on spatiotemporal patterns of urban growth at the regional level over a relatively longer timeframe. This paper was based on multi-sensor remote sensing image data and employs several landscape metrics and the centroid shift model ...

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