基于耕地质量和空间集聚格局的县域基本农田划定

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 25 期数: 2018年04期页码: 349-355,364 栏目: 出版日期: 2018-06-13

Title:: Distribution of Prime Farmland Based on Cultivated Land Quality and Spatial Agglomeration Pattern at County Scale

作者:: 曹丽萍^1,2, 罗志军^1,2, 冉凤维^1,2, 骈奇星³, 蔡正妹^1,2, 赵越^1,2, 赵杰^1,2; 1. 江西农业大学国土资源与环境学院, 南昌 330045;
2. 江西省鄱阳湖流域农业资源与生态重点实验室, 南昌 330045;
3. 南昌市国土资源局经济技术开发区分局, 南昌 330045

Author(s):: CAO Liping^1,2, LUO Zhijun^1,2, RAN Fengwei^1,2, PIAN Qixing³, CAI Zhengmei^1,2, ZHAO Yue^1,2, ZHAO Jie^1,2; 1. College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China;
2. Jiangxi Provincial Key Laboratory of Poyang Lake Basin Agricultural Resources and Ecology, Nanchang 330045, China;
3. Land and Resources Bureau of Nanchang City in Jiangxi Province, Nanchang 330045, China

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分类号:: F301.24;F321.1

摘要:: 为实现新时期划定基本农田数量达标、优质稳定、集中连片、生态并重的具体要求，以余江县为例，从自然条件、区位条件、耕地稳定性和生态安全4个方面构建了耕地质量综合评价指标体系，结合多因素综合评价与逐级修正模型测算了耕地质量综合分值，采用改进的局部空间自相关方法分析了耕地质量的空间集聚特征，从而探索了县域基本农田划定方法。研究表明：（1）余江县的耕地综合质量平均分值为54.74，综合质量总体较高，主要集中在中部河谷平原地区。（2）耕地综合质量在空间上呈现一定的集聚规律：HH型和HL型与高分值耕地空间分布保持一致；LH型和LL型与低分值耕地空间分布保持一致；而无显著型无明显集中区域，面积较小，且零星分布。最终选择HH，HL和LH型入选基本农田。（3）通过耕地质量综合评价得到的基本农田划定结果对此种方法进行验证，并基于景观格局指数对两种方法进行对比分析，这种方法得到的基本农田划定方案在空间连片度、斑块破碎度等方面得到优化，更加符合划定基本农田的稳定、优质、集中的目标。

Abstract:: In order to realize the specific requirements of setting basic farmland quantity, quality stabilization, centralized series and ecological balance in the new period, we took Yujiang County as an example to describe the quality of cultivated land, and constructed indexes for each land unit by four elements such as the spatial difference of cultivated land natural quality, location conditions, the stability of cultivated land and ecological security. The comprehensive score of cultivated land quality was calculated by combining multi-factor comprehensive evaluation with the progressive correction model. The quality of cultivated land was analyzed by using improved local spatial autocorrelation method in spatial agglomeration characteristics, so as to explore the county basic farmland delineation method. The result shows that: (1) the average value of comprehensive cultivated land in Yujiang County was 54.74, reaching up to moderate and upper levels generally; the high-quality cultivated land was located in the central valley plain area; (2) the comprehensive quality of cultivated land had a certain concentration in space, the spatial distribution of HH and HL was consistent with high value cultivated land. The patterns of LH and LL types were consistent with the distribution of low-value cultivated land; there is no significant concentration area, small area, and sporadic distribution; HH, HL and LH types were selected as the prime farmland; (3) through verifying this method by using the result of basic farmland demarcating based on comprehensive evaluation of farmland quality, landscape pattern index was introduced to compare two methods, the proposed method was not only optimized in the aspects of spatial contiguity and patch fragmentation, but also could more better achieve the goals of stability, high quality, concentration of basic farmland demarcation.

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更新日期/Last Update: 1900-01-01