南昌市低效园地和林地的宜耕适宜性调查与评价研究

发布时间：2018-02-11 16:08

本文关键词： 低效园地、林地实地调查适宜性评价开发利用对策南昌市　出处：《江西农业大学》2016年硕士论文　论文类型：学位论文

【摘要】：耕地资源是经济社会发展的重要保障。保护和合理利用耕地资源,是政府和各个政府部门乃至全社会的共同责任。随着社会经济的飞速发展,南昌市工业生产增长快速,土地需求量大,耕地后备资源不足,耕地保护任务艰巨。低效园地和林地作为耕地后备资源,对其调查评价是合理开发利用耕地后备资源的基础,是实现耕地总量动态平衡、耕地红线不突破的重要保障,对于保障粮食安全、促进经济社会发展具有重要意义。根据国家相关文件精神和技术规范,开展了南昌市低效园地和林地潜力调查与评价工作。调查与分析结果如下。(1)运用GIS技术,筛选出南昌市低效园地和林地潜力调查与评价的任务图斑和潜力调查图斑,筛选结果显示:南昌市低效园地和林地潜力调查与评价的任务图斑为19253公顷,其中进贤县和新建区的任务图斑面积较大,分别为9787公顷、6553公顷;低效园地和林地潜力调查图斑面积7487公顷,进贤县和新建区的潜力较大,分别为4780公顷、1687公顷。(2)采取“限制性因子”评价法对筛选出的图斑进行宜耕性评价,评价结果显示南昌市宜耕地总面积为1671公顷,其中宜耕旱地的面积为1446公顷,宜耕水田的面积为225公顷;不宜耕地总面积为5816公顷。(3)在宜耕性评价的基础上,运用指数和法分别对宜耕水田、宜耕旱地的适宜性等级进行评价。评价结果显示:宜耕水田适宜性等别为一等的面积为70公顷,占31.02%,适宜性等别为二等的面积为90公顷,占39.82%,适宜性等别为三等的面积为66公顷,占29.16%;宜耕旱地适宜性等别为一等的面积为520公顷,占35.99%,适宜性等别为二等的面积为659公顷,占45.60%,适宜性等别为三等的面积为266公顷,占18.41%。
[Abstract]:Cultivated land resources is an important guarantee of economic and social development. The protection and rational use of cultivated land resources is the common responsibility of the government, various government departments and even the whole society. With the rapid development of social economy, the industrial production in Nanchang is growing rapidly. As the reserve resources of cultivated land, the investigation and evaluation of low efficiency garden land and forest land are the basis of rational development and utilization of cultivated land reserve resources and the realization of dynamic balance of total cultivated land. The important guarantee of not breaking the red line of cultivated land is of great significance for ensuring food security and promoting economic and social development. According to the spirit of the relevant national documents and technical norms, The investigation and evaluation of low efficiency garden land and forest land potential in Nanchang City were carried out. The results of investigation and analysis were as follows: 1) by using GIS technology, the task map and potential map of investigation and evaluation of low efficiency garden land and forest land potential in Nanchang City were selected. The screening results showed that the task map for the investigation and evaluation of low efficiency garden land and forest land potential in Nanchang city was 19253 hectares, in which the area of task map in Jinxian County and the newly built area was rather large, which was 9787 hectares to 6553 hectares, respectively; The plot area of low efficiency garden land and forest land potential investigation was 7487 hectares, the potential of Jinxian county and newly built area was 4 780 hectares / 1687 hectares respectively) the "restrictive factor" evaluation method was used to evaluate the suitability for tillage of the selected map spot. The results show that the total area of suitable cultivated land in Nanchang is 1671 hectares, of which 1446 ha is suitable for dry land, 225 ha for paddy field, 5 816 ha for unsuitable cultivated land. The index and method were used to evaluate the suitability grade of paddy field and dryland. The results showed that the area of suitability of paddy field was 70 hectares, accounting for 31.02 hectares, and the area of suitability was 90 hectares. For 39.82, the area of the third grade was 66 hectares, accounting for 29.16 hectares; the area of the suitability of the dry land for ploughing was 520 hectares, accounting for 35.99 hectares, and the area of the second class for suitability was 659 hectares, accounting for 45.60 hectares, and the area of suitability for the third grade was 266 hectares. 18.41%.
【学位授予单位】：江西农业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：F323.211

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