| With the rapid development of China's economy and society, urbanization has entered a rapid development stage, to take the turnover, construction land replacement and other methods to solve the problem of urban construction land issue has become increasingly unable to meet the development needs of society. Our on urban and rural construction sites linked to the project is targeted, this policy is met by urban construction and development needs for the amount of land, but also make intensive use of land in rural areas, to facilitate the development of township planning of dynamic equilibrium of cultivated land from to a very important role. However, only the pursuit of increasing the number of arable land but ignored the quality of arable land, there will inevitably weaken the quality of arable land question. At this time it reflects the importance of quality evaluation of cultivated land. Cultivated Land Quality Assessment can effectively prevent accounted for more than make up less dominant fill inferior problem, but also a kind of quality assurance linked to changes in the project.In this study, "Chengdu Pujiang County town Daxing Town community, nine pointed village land linked to changes in the project" as the basis, the quality evaluation of land consolidation based on arable land, provide a scientific basis for land consolidation performance. In-depth understanding of the actual situation of the study area and collecting and analyzing relevant information on the basis of a lot, the project assessment, the acceptance stage conducted a field survey, data analysis within the industry, to agricultural land regulations as the basis to determine the evaluation factors and establish cultivated land quality evaluation system, the final assay step by step through agricultural land, from multiple factors, natural environment and social and economic use, the evaluation of the study area is divided into two regions,calculate land and other natural index, utilization index, economy index, supported by Arc GIS software at the quality of cultivated land in the study area were evaluated. By studying the following conclusions:(1) in conjunction Delphi method and evaluation factors' rebuilt Dhamma, the discrete degree weights from the analysis of weightvalues ??mean and variance, the judgment of the evaluation factor weights the most suitable local. Eight evaluation factors and weights paper weight value.Evaluation factors are the effective thickness of soil, soil PH value, surface soil texture, slope of the terrain, soil organic matter content, drainage conditions, the cross-sectional configuration, irrigation guarantee rate. Relative weights eight evaluation factors were 0.12,.0.08,0.14,0.15,0.08,0.14,0.09,0.20. Improve the integrity and accuracy of Cultivated Land Quality Assessment System. And the use of Arc GIS technology evaluation factor to quantify, to improve work efficiency and quality of arable land evaluation accuracy.(2) was constructed to provide a scientific basis for the establishment of projects linked to changes in cultivated land quality evaluation system, update the content of arable land evaluation of the scientific evaluation of project performance based increases linked.(3) using stepwise correction method for analysis of arable land from natural index, index of cultivated land use and farmland three-level economic indicators. Calculation of area designated natural quality of the crop points to give a evaluation of regional and two designated natural crop quality evaluation sub-region were 0.8700,0.9185, natural quality index were 873.828,92.5414 cultivated land utilization index in accordance with the formula were 390.3506,412.7450; arable land and other economic indices were247.3544,261.1437. Final in accordance with relevant provisions of the "Regulations of Farmland Grading" Grading procedures relevant rules, pitch selection method grading, evaluation of a region, the natural quality of 9, etc., as the use of 9, etc., as the economy, etc. 9. Evaluation of Region II, the natural quality of 9, etc., as the use of 9, etc., the national economy is 8 and the like. Summary obtained poor quality research area of ??arable land, the low level of utilization of the situation, should strengthen the management of post-arable land, increase production inputs, so that arable land to sustainable development. At the same time for future land newspaper levy defined settings do not prevent the accounts for more than make the situation less occurrence of practical significance to protect the quality of cultivated land. |
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