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Agriculture plays important role in economic and social development in China. Diverse climatic and geomorphological conditions make it difficult to monitor agriculture timely and accurately in China. In this paper, we demonstrated the application of GF-1 imager and data products in agricultural monitoring in China.
To improve the performance of crop models for regional crop yield estimates, a particle filter (PF) was introduced to develop a data assimilation strategy using the Crop Environment Resource Synthesis (CERES)—Wheat model. Two experiments involving winter wheat yield estimations were conducted at a field plot and on a regional scale to test the feasibility of the PF-based data assimilation strategy...
Image classifications including sub pixel analysis are often used to estimate directly the crop acreage, while ground data collected during field surveys play a secondary role. This type of crop area assessment using image classifications often leads to a biased estimation due to non-representative selection of training data and subjective a-priori knowledge. Instead regression estimator approach...
Acreage of crops is an important agricultural economic information. In this paper, Using a detailed land use data, constructed sample frame. Ditch planted crops into account the direction,. In support of GIS spatial technology, the survey cost and distribution of natural land, set a reasonable standard of land area. Then under the irregular block size, spatial distribution, the relationship between...
With the sustaining economic development in China, the timely, accurate and objective agricultural production information service has been highly demanded by the central and provincial governments. China Agricultural Remote Sensing Monitoring System (CHARMS) is an operational agricultural monitoring system in the Ministry of Agriculture of China to meet this demand.
China's rape acreage and total output of rapeseeds ranks among the top in the world, accounting for more than 30% of the world's total rape acreage and output of rapeseeds. This paper takes Landsat TM as the main data source in conducting the study of extracting rape acreage information in the Shou County, Anhui Province. Through analysis and calculations of phenological diversity, spectral discrimination,...
Under the integrated influences of global climate changes and overgrazing, China rangeland has degraded over recent years. Fuhai County is located in the north margin of Junggar basin and its range land has experienced expansive degradation. The eco-migration policy are launched respectively by local government in 1998 and 2006. In order to analyze the regional effects of ecological migration, we...
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