甘肃荒漠绿洲区农用地分等研究——以河西走廊地区金塔县为例

以河西走廊地区金塔县为样区,对甘肃荒漠绿洲区农用地分等进行了研究,结果表明:金塔县农用地划分为2个自然等,从地类分布情况看,其分布规律与耕地的可灌溉情况紧密关联,全县99.45%的分等单元为自然质量较高的16等,在各乡镇均有分布;从农用地利用等别看,全县共分为3个等别(11～13等);农用地等别共分为6个,主要为4～8等,在空间分布上更趋于集中,而三合乡的水浇地由于地形平坦、土壤肥力较高,加之种植合理,成为全县等别最高的农用地,为10等。

Study of Agricultural Land Classification of Gansu Desert Oasis with Jinta County in Hexi Corridor for A Case

An agricultural land classification in Gansu desert oasis was studied with Jinta County in Hexi Corridor area as example. The results showed that： the county agricultural land is divided into two natural levels. According to land type distribution, the distribution rule is closely related to the irrigating of cultivated land. The county has 99.45% of the grading unit for the sixteenth level with natural high quality, distribu- ted in all the villages in the county; According to agricultural land use, the county is divided into three levels from the eleventh to the thir- teenth ; Agricultural land is classified into six levels, mainly from the fourth to the eighth level, the spatial distribution tend to be more concen- trated, and Sanhe Township irrigable land become the tenth level of the highest level, for its fiat terrain and high soil fertility and reasonable planting.