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Simulating, forecasting and displaying flood submergence range accurately and scientifically has important significance for flood control, flood fighting, flood assessment and disaster relief to provide decision support. This paper develops the Flood Submergence Analysis System using ArcEngine component library. The main functions of this system are as follows: generation of 3D terrain, display of...
In order to evaluate the arable land change and ites pressure in coastal region of Jiangsu province, China. Land use change from 2006 to 2010 were analyzed based on TM imagery. With the help of the Statistical Yearbook, the pressure index of arable land in the region was calculated and the four partition were divided. The urbanization trend and the driving factors were also analyzed. That some countermeasures...
Since Asian countries are responsible for approximately 90% of the world rice production and consumptions, rice is the most significant cereal crop in Asia. Japan Aerospace Exploration Agency (JAXA) works with Thai Geo-Informatics and Space Technology Development Agency (GISTDA) to develop a prototype system to provide crop anchorage and yield estimation by using space-based radar and other earth...
It is necessary to adopt effective technologies promptly to investigate and find out the rural land management right spatial distribution. We developed land parcel fundamental information field acquisition system PDA of rural land management right contract which can conveniently collect fundamental information such as land parcel spatial location information, management right information and land...
The conventional theory of sampling inspection is not suitable for the quality inspection of ocean data due to its specific characters such as magnanimity, multi-source, multi-dimensions, various types, and obvious spatiality. Thus, in this paper, we proposed a novel multi-scale fuzzy sampling model based on fuzzy mathematics. Given their magnanimity, multi-dimensions, and various types, the ocean...
Rain use efficiency (RUE, crop grain yield divided by annual precipitation) is key for agricultural production where water resources are limited. RUE of maize (Zea mays) was calculated based on grain yield data collected across the precipitation gradient on the Chinese Loess Plateau under three treatments: (1) CK, flat plot without mulch; (2) HM, half-mulch flat plot, i.e. alternating plastic film...
Choosing a farmland's ecological compensation mode with low transaction cost, consideration to both fairness and efficiency and easy operation fairness, efficiency and operability, realizing the market operation of farmland ecological products, which do not only influence the effect of the ecological compensation, but also are the key to a successful implementation of ecological compensation mechanism...
With the acceleration of rural-urban land conversion and the development of our society. It is important to evaluate the external benefits loss in rural-urban land conversion. In this paper, the author's use the contingent valuation method (CVM) to evaluate the external benefits loss of rural-urban land conversion in Hongshan District, Wuhan. Several conclusions can be drawn from the study. Firstly,...
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...
The distributing map of surface reflectivity of Shanghai city and its adjacent areas is generated by MODIS remote sensing image. According to the surface spectrum features of this area and the changing characters of surface reflectivity caused by MODIS pixels, we explain the distributing map of surface reflectivity as follows. In the fifth wave band of MODIS, the distributing map of surface reflectivity...
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