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The pairwise separability index (SI) has been demonstrated as an effective indicator for capturing crucial phenological differences between two plant species. However, its application to crop types, which have more obvious phenological characteristics than natural vegetation, has received less attention, and extending the pairwise SI to multiple crops for feature selection still remains a challenge...
The objective of this paper is to describe the method of crops pattern change allocation, and to simulate the crops pattern in Heilongjiang province utilizing crop pattern simulator (CROPS) model. In this study, based on interpreted remote sensing data and crops pattern statistical data, CROPS model simulates long time series crop spatial pattern. Firstly, crops pattern and driving factor analysis...
Spatial Production Allocation Model (SPAM), developed by International Food Policy Research Institute (IFPRI), is one of broadest spatial models that applied a cross-entropy method to downscale the area and yield for each crop with a resolution of 5 arc minute globally for the year 2000 and 2005. To evaluate the accuracy of three staple crops (rice, wheat and maize) in China allocated by SPAM, we...
Rice is one of the staple grains in China and has a strong relationship with annual accumulation temperature which has a potential effect on rice planting area. This study utilizes a model called SPAM (Spatial Allocation Model) to detect the rice spatial distribution change during the 1981–2010 under the climate change in the Northeast China Plain. The result shows that climate change plays an important...
The forth IPCC report pointed out grain production as one of the highest vulnerability by which climate change is expected to impart the most severe effects. The recent concern about food scarcity motivates the development of the present system named Remote Sensing Environmental Monitor (RSEM) for crop yield monitoring. The authors have developed a photosynthesis model for rice production to address...
This study made an analysis of agricultural land use efficiency in APEC (Asia-Pacific Economic Cooperation) with an objective to find which member economy can produce at least the same amount of food production with less resources input. To do so, data envelopment analysis (DEA), a useful method to evaluate the efficiency and productivity of a number of producers which consume multiple inputs to produce...
This study made an assessment of food security in APEC (Asia-Pacific Economic Cooperation) region with more attention to highlight grain production in food security system. To do so, the mechanism method was firstly used to calculate the productivity potential of radiation, thermal, climatic, and land productivity potential regressively, and to count the grain production potential in the whole APEC...
This study presents the research result on estimating winter wheat yield in North China Plain, by assimilating multi- temporal Landsat TM images into the GIS-based EPIC model (Erosion Productivity Impact Calculator, recently renamed Environmental Policy Integrated Climate). The results indicate that the assimilation of LAI maps retrieved from remotely sensed data has improved the yield simulation...
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