基于土壤环境质量的农业区划研究--以浙江省为例

Agricultural regionalization based on soil environment quality—a case study of Zhejiang Province

以2002年浙江省农业地质环境调查数据为基础,对浙江省土壤环境质量进行评价和农业区划.参照《土壤环境质量标准(GB 15618-1995)》将土壤环境质量划分为3类:Ⅰ类土地占21%,Ⅱ类土地占61%,Ⅲ类土地占17%,表明调查区土壤环境质量总体较好.调查区域内适合种植绿色食品和无公害农产品的农用地面积分别为180.9万hm2和204.8万hm2,分别占农用地面积的76.5%和86.6%.调查还发现了29个富硒土壤区,总面积为7657 km2.依据土壤安全性评价结果,将调查区域划分为3个农业功能区:城市生态农业区、平原高效农业区和低山丘陵特色农业区.本研究成果有利于浙江土地资源的高效、可持续利用.

Evaluation and agricultural regionalization of soil environment quality in Zhejiang Province were conducted based on the survey data of Geological Environment Survey Project of Zhejiang Province in 2002. Soil environment quality in Zhejiang Province was classed 3 kinds according to Standard of soil environment quality（GB 15618-1995）. Soil area of kinds Ⅰ , Ⅱ , and Ⅲ accounted for 21%,61%, and 17% of the total area, respectively, which suggest that soil environment quality in surveyed zone was better. The land area for agricultural use adapting to produce green and non-polluting agricultural products were 180.9 × 10^4 and 204.8 × 10^4 hm^2 , respectively, and accounted for 76.5% and 86.6% of the total area, respectively. Twenty nine high Se zones with total area of 7657 km^2 were found in surveyed Zone. The surveyed zone was classed into 3 agricultural function zones, namely, city ecological agricultural zone, plain high efficiency agricultural zone, and low mountain and hill feature agricultural zone, according to the evaluation results of soil security. The results above are propitious to high effective and sustainable utilization of soil resource in Zhejiang Province.