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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...
Crop Growth Monitoring System (CGMS) was originally developed by European Union based on a crop growth model (WOFOST) with the goal of regional yield estimations for major crops. The CGMS, driven by the geographic information system and the crop growth model, is composed of three main components: weather monitoring, crop monitoring and crop yield forecasting. In this study, the CGMS is introduced...
Climate variability has been viewed as a prime field of interest among the environmental scientific communities, especially in the agriculture planning field. Variable climatic condition has a direct impact toward the agricultural productivity. This variability, especially change in temperature, could be due to the expansion of urbanization within the region. Rapid growth of urbanization due to population...
The Loess Plateau covers an area of 640,000 km2 in the upper and middle reaches of China's Yellow River. The natural environment of this region is complex and variable and is considered as one of the major ecologically fragile areas in China. In the last two decades, with dramatic changes in population, agricultural cultivation patterns and regional climate, uncertainty surrounding the potential to...
Crop Growth Monitoring System (CGMS) which was developed by MARS (Monitoring Agriculture with Remote Sensing)Project in European Union (EU) Joint Research Centre (JRC) is a large-scale crop growth monitoring system. CGMS has made a wide range of applications in the EU, and has become an important part of MARS Project; it also plays an important role in scientific decision-making in the EU agricultural...
Accurate evaluation and prediction of the potential impact of climate change on crop production is essential to the sustainable development of a country's agriculture. Model variations plus uncertainties in the future climate change scenarios create a big challenge for such evaluation. In this work, we developed a statistical crop model using the historical yield data between 1981–2010 from the National...
Rainfall erosivity is an essential factor to describe the potential soil loss caused by rain, which can be expected to change in correspondence to climate changes. Spatial distribution pattern of rainfall erosivity is a guideline to erosion regional difference revelation and soil conservation regionalization. The focus of this article is to search an optimum spatial interpolation model for the mapping...
In this study, the irrigation impact on land surface parameters was analyzed using a new irrigation map of China and remote sensing products during two time periods and three sub-regions. Based on this study, in North China, the mean Normalized Difference Vegetation Index (NDVI), visible band albedo, evapotranspiration (ET), daytime land surface temperature (LST) and nighttime LST during the growing...
Changing climate conditions have exacerbated the need for early warning systems that integrate with agroecosystem decision support. Short term forecasts are becoming more common, but it is not clear how current forecasting can practically be improved beyond the accuracy of current federal weather data forecast sources. One possibility is to systematically incorporate trends that are interannual or...
Understanding change in climate and temperature is extremely important to carry out any sort agricultural decision. These fluctuations of climate could be cause by some global reason such as tropical atmospheric circulation. Expansion in the tropical atmospheric circulation brings significant temperature changes and precipitation especially in the equatorial region such as the Caribbean. For this...
As a case study on analysis of soil erosion change, in Hulunbeir, Inner Mongolia, China, was once one of the most severely eroded regions in semi-arid and semi-humid China. However, its soil erosion is becoming a matter of concern for more and more people in recent years. The main body of vegetation is Daxinganling virgin forests and Hulunbeir grassland, However, large areas of forest were destroyed...
Biomass is an important source of renewable energy that has the potential to reduce greenhouse gas emissions. Some food crops, such as corn, can be used as feedstock for bioenergy production. Under limited cultivated land resources, this may lead to increased food prices due to resource competition between food and fuel. Some energy crops, such as switchgrass and hybrid poplar, can be grown on marginal...
In this study time-series VCI data provided by George Mason University's Global Agricultural Drought Monitoring and Forecasting System (GADMFS) are used for agricultural drought monitoring and forecasting. The validity of using VCI as a primary tool for drought monitoring is supported by the statistical result obtained in this article that the VCI is highly correlated with the PDSI at specific temporal...
In the geospatial domain, the Open Geospatial Consortium (OGC) has recently released two new web service interface specifications designed to enable spatial data provision, calculations and modeling on the Internet. These specifications are known as the Web Processing Service (WPS) and Table Joining Service (TJS). A WPS can be used to enable access to any sort of calculation or model, although it...
Crop development information is critical to U.S. agricultural economy and decision making. In this paper, a general framework of Hidden Markov Models (HMMs) based corn progress percents esitmation method has been presented. Multivariate time series involving mean NDVI, fractal dimension, and Accumulated Growing Degree Days (AGDDs) are embedded into the modified HMM. Features of mean NDVI and fractal...
Agricultural land quality monitoring is a fundamental and key work for national food security and cultivated land protection that ensures the sustainable development of agriculture. Traditional land surveys usually take long term and huge effort to conduct, while RS technologies are mainly used to monitor the quantity change of land resources. The changing information of the Natural Quality Index...
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