Research On RS-based Soil-salinization Monitoring And Dynamic Analysis In DaQing City

Soil-salinization is one of the major types of Land Desertification and Degradation, which has already destroyed the Ecological environment seriously, led to the decrease of plantation over large areas, affected Agricultural production and income of farmers. ultimately will affect Socio-economic sustainable development. The more and more people around the world pay attention to it.In this paper, seleced the relatively typical Soil-salinization in Daqing City of Heilongjiang Province as an example, which used the modern Remote Sensing of technical support, and the data were LandsatTM5 satellite Remote Sensing data in 1990s.2006s and 2010s, combined with the field investigation data, used the Maximum Likelihood Classification algorithm, On the geographical distribution, degrees of Soil-salinization carried on the Supervised classification. The Transfer Matrix were used of Studied and Analyzed to Soil-salinization and other classes of land. For the complex process of change of Soil-salinization, a myriad of factors the situation, the choice to abstract and simplify the characteristics of Land use and Land cover model (LUCC model) within the region the extent of soil salinity and other land-use type of conversion process describe and explain the Genetic Mechanism of change process and forecast the future trends of land use types.Soil-salinization is a common results of Physical Geography factors and Productive activities of human, in the different regions and periods; The dominant role of the different factors, so the formation of Soil-salinization was a very long And complex process. For this. the paper used the 1990s to 2010s annual Precipitation and annual Evaporation, annual Temperature, and the annual total Population of the region as Soil-salinization's driving factors to do research and analysis. Physical Geography factors were the objective conditions in the formation and development of Soil-salinization, but natural factors on the impact of soil salinity is relatively slow. Productive activities of human on soil resources of various excessive demand, such as the inconsequence irrigation of the soil destroyed the ecological balance, sped up the process of Soil-salinization.In a word, based on modern Remote Sensing technology, combining the relevant driven analysis of natural and human factors, the dynamic changes of Soil-salinization, in order to prevent further deterioration, to within the region, It provides scientific basis for restore and improve the salinization of soils of Daqing City.