云南省耕地经济等生态环境空间分布特征

发布时间：2018-05-26 05:25

本文选题：耕地 + 经济等　；参考：《水土保持研究》2017年02期

【摘要】：合理利用耕地资源的首要问题是明确耕地利用现状,掌握其数量、质量和空间分布。以云南省129个县的农用地分等省级数据为基础,结合该省生态环境现状分区成果,分析了全省耕地经济等在空间上的分布特征。结果表明:(1)云南省耕地经济等呈典型偏正态分布,以1~5等为主,占比高达92.39%;优区内耕地面积分布随经济等的提高呈现逐渐下降的趋势,其他生态环境分区耕地经济等均呈偏正态分布。(2)云南省耕地经济等总体水平偏低,其平均等为2.9等。中区耕地平均经济等最高,为3.2等;劣区最低,为2.2等;优等地平均经济等最高,为10.7等;低等地最低,为2.0等。各生态环境分区耕地质量等级平均等发展趋势与全省平均等一致。(3)云南省耕地以中、低等地为主,所占比例高达95.96%。其中劣区主要分布低等地,占比高达92.66%;优等地、高等地主要分布在中区及良区,占比分别为71.2%和74.9%;中等地在生态环境分区分布相对均匀。研究成果对优化耕地布局、提升耕地质量和保护耕地生态具有重要意义。
[Abstract]:The most important problem of rational utilization of cultivated land resources is to make clear the present situation of cultivated land use, to master its quantity, quality and spatial distribution. Based on the provincial data of agricultural land classification in 129 counties of Yunnan Province, the spatial distribution characteristics of cultivated land economy in Yunnan Province were analyzed. The results show that the economic distribution of cultivated land in Yunnan Province is typical and normal, with the proportion of 92.39%, and the area distribution of cultivated land in the superior area decreases gradually with the increase of economy. The total level of cultivated land economy in Yunnan Province is low, with an average of 2.9, etc. The average economic value of cultivated land in the middle region was the highest, 3.2, the lowest in the inferior area, 2.2, the highest in the superior land, 10.7, and the lowest in the lower, 2.0, et al. The average development trend of cultivated land quality grade in each ecological environment zonation is consistent with that of the whole province.) the cultivated land in Yunnan Province is mainly middle and low, accounting for 95.96% of the total cultivated land. Among them, the inferior areas are mainly distributed in low and equal areas, accounting for 92.66 percent, while superior and higher areas are mainly distributed in the middle and good areas, accounting for 71.2% and 74.9%, respectively, and the distribution of the middle areas is relatively uniform in the ecological environment zonation. The research results are of great significance to optimize the distribution of cultivated land, improve the quality of cultivated land and protect the ecology of cultivated land.
【作者单位】：云南农业大学国土资源科学技术工程研究中心;云南省土地资源利用与保护工程实验室;云南农业大学水利学院;昆明理工大学建筑工程学院;
【基金】：云南省教育厅科学研究基金项目“九大高原湖泊流域土地利用空间分异水质响应及驱动机制研究”(2015Z104) 云南农业大学自然科学青年科研基金项目“非点源污染治理中湖泊流域上游种植生态区划研究”(2015ZR16)
【分类号】：F323.211

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