GIS技术支持下的筠连县耕地质量等别评价
[Abstract]:The current situation of cultivated land in China is mountainous, flat land, small proportion of cultivated land, small proportion of cultivated land, low per capita cultivated land in cultivated land use, uneven distribution of cultivated land resources, great regional differences in cultivated land productivity, a series of problems such as the exhaustion of cultivated land resources and the use of more difficult land, so that the protection and utilization of cultivated land should be taken as a result. In order to ensure the balance, keep the red line of cultivated land and keep the red line of basic farmland and high yield farmland, the quality evaluation of cultivated land should be paid attention to and carried out in practice and theory research. The essence is to reveal the quality of cultivated land and the law of the spatial distribution of cultivated land. This ensures the grain of the 1 billion 300 million population of China. It is of great strategic significance to promote the stable development of agriculture and promote the stable economic and social growth. The protection and research of cultivated land is imperative. To fully understand the factors affecting the quality of cultivated land in Junlian county and the quality of its cultivated land, it is beneficial to adjust the distribution structure of land utilization in Junlian county and to rationally arrange the various construction of cultivated land in the region. According to the actual situation of Junlian County, this paper sets up the evaluation index system of the arable land factor of Junlian County by the Delphi method, and combines the GIS software space by determining the parameters and quality points of the designated crops. The data processing capacity is used to evaluate the cultivated land in Junlian county. According to the results of the evaluation of the cultivated land quality in Junlian County, the soil distribution and land regulation factors which affect the results of the cultivated land quality evaluation are analyzed. On this basis, the utilization of cultivated land is proposed in combination with the actual situation of local cultivation. The main achievements of this paper are as follows: (1) the construction of Junlian is made. Based on the data of the last round of cultivated land and the analysis and verification of the relevant data of the cultivated land in Junlian County, the index system of the factors such as the profile configuration, the soil layer thickness, the landform type, the pH value of the soil, the slope of the soil, the organic matter and so on, is finally constructed, and the production potential of the designated crops is confirmed and confirmed. Number, yield ratio of designated crops, land use coefficient and economic coefficient, and calculate the quality of designated crops according to the relevant formula; (2) the quality evaluation of cultivated land in Junlian county is carried out by fuzzy comprehensive evaluation method, and all cultivated land in Junlian county is divided into arable land and other cultivated land 450.72hm2,9 and other arable land according to the quality of cultivated land. 26712.77hm2,11 and other cultivated land, such as cultivated land, such as cultivated land, such as cultivated land and other cultivated land, such as 0.24hm2. cultivated land, and so on, such as 0.24hm2. cultivated land and other cultivated land, such as 6 arable land, 0.59hm2,7 and so on, 1489.03hm2,8 and so on, 3201.35hm2,9 and so on, 14252.59hm2,10 and so on, 14252.59hm2,10 and so on, 13520.56hm2,11 and other cultivated land, 4562.02hm2. arable land, etc. 0 cultivated land 13261.92hm2,11 and other arable land 4561.2hm2. (3) used ArcGIS software and Excel software to compare the achievements of cultivated land in Junlian county and the results of the upper round. The overall situation of the change is that the area ratio of 8 and 9, such as 8 and 9, is up to 1.22% and 26.64%, respectively, to 10, and so on, compared with the upper wheel compared with the upper wheel. 72.15%; 11 and so on without change, the area of cultivated land increased by 108.61hm2; compared with the results of the upper wheel, the area ratio of 7 other 7 other places, such as the cultivated land use in Junlian County, rose from 2.72% to 2.76%; the area ratio of 8 other places rose from 8.18% to 8.24%; the proportion of the 9 land area rose from 40.60% to 40.86%; the area ratio of 10 areas fell from 35.94% to 35.94%. The area ratio of 35.82%, 11, and other places fell from 12.56% to 12.32%, and the area of cultivated land in Junlian was not changed from 6 to 12.32%, and the area ratio of 7 equal areas rose from 3.89% to 4.02%; the proportion of area 8 increased from 7.63% to 8.65%; the area ratio of 9 and other places dropped from 39.30% to 38.49%, etc. The area ratio decreased from 36.62% to 36.52%, and the proportion of 11 areas decreased from 12.56% to 12.32%.
【学位授予单位】:成都理工大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:P208;F323.211
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