Research On Quality Monitoring Index System Of Cultivated Land In Songnen Plain

Cultivated land resource, which is the most important material in the people development and survival, is the essential agricultural resource and production factor as well. Also, it is important for maintaining social stability and protecting cultivated land resources. With the development of social economy, the quantity of cultivated land is declining continually. However, the declined in the numbers of is visible, instead of the quality. Cultivated land quality monitoring work is the investigation of the existing agricultural land classification and land resources based on the overall situation which is the research the quality changes of cultivated land and cultivated land quality. Songnen Plain is the main grain producing areas in Heilongjiang Province.Moreover, it is meaningful to ensure national grain food security so that we can grasp in the plain of limiting factors of cultivated land quality and land quality by doing research on the Songnen Plain of cultivated land quality monitoring index system in the future.By the literature review in my essay, it argues that the basis of defining the concepts. Based on the agricultural regionalization theory, person relations’ theory, this essay chooses the Songnen Plain as the subject. Additionally, it combined with land use in the characteristics of the subject, the main limiting factors and regional factors influencing cultivated land quality to analyze of the driving factors affecting the quality of cultivated land.The construction of Songnen Plain Farmland refining comprehensive and targeted index system of cultivated land quality monitoring, points to determine the period and method of monitoring indexes. Finally, the outline of this essay is as follows:(1) Diagnosis and analysis of factors affecting the quality of cultivated land. Protect the quality of cultivated land as a fundamental goal, by analyzing of the relevant concepts and theories, and the driving factors in-depth. The natural factor contains climate, soil, topography, and vegetation cover factors. In addition, the human factor contains soil pollution and land use change. With the development of the society, the driving factors of the comprehensive renovation project are the land consolidation, the pollution control of water and soil, and keep the implementation of engineering measures.(2) The purpose of investigating on the construction of index system of cultivated land quality monitoring in Songnen plain. This essay on the basis of the theory of agricultural land grading by correlation analysis and mathematical statistics method, on the agricultural land classification commonly used selection index and the index system of research and analysis, when choosing the cultivated land quality monitoring indicators provide a basis. The agricultural land classification, land quality monitoring and effective convergence, then Lin selected using higher frequency indicators, soil PH value and effective soil layer thickness. The reference partition of agricultural regionalization combined with restricted factors in this subject, following the cultivated land quality monitoring principle of index selection. Songnen Plain, the temperature is a cool and semi humid area. Songnen Plain, another part in the South warm semi arid region. As we can see, the cinfentral Songnen Plain is mild semi humid area, the northern Songnen plain cool is warm soil erosion area and Songnen plain warm western Aeolian sandy soil salinization area cultivated land quality monitoring index system are established respectively.(3) The research on monitoring sample point layout, monitoring period and method. Based on the existing cultivated land quality monitoring points layout method, the combination of potential index Cesc test samples and the calculation of grading factors provided index can intuitively reflect the influence of various natural factors. Meanwhile, the factor of lifting and accurately reflects monitoring plots of cultivated land comprehensive quality. Through the monitoring index of stability factor analysis, indicators are divided into the stability index, slow variable index, index mutation, perturbation of the balance of nature and social economic factors. The profits from the predecessor research results. Besides, monitoring indicators monitoring cycle are divided into three categories, that is, no regular monitoring, regular monitoring, and annual monitoring. Overall, the method of monitoring measure affecting the quality of cultivated land nature, land use and other factors. According to the specific characteristics to determine the monitoring method of each index, including monitoring model, field sampling survey, remote sensing technology, land use and survey methods.