洞庭湖区土壤肥力的综合评价

以洞庭湖区生态地球化学调查数据为基础,采用模糊综合评价法,讨论了区域土壤肥力分布状况及影响因素.结果显示,洞庭湖区土壤肥力处于较高水平,但区域内土壤肥力存在差异,其中平原区河流冲积物区土壤肥力最高,丘岗山地区的红层、花岗岩等区土壤肥力较低;地质背景对土壤肥力有显著影响;土地利用类型对土壤微量养分影响最为显著,认为在合适的区域,以合理的耕种方式和有效地防止水土流失对培肥地力至关重要.

Comprehensive Evaluation of Soil Fertility in Dongting Lake Region

Based on mass of soil data obtained from Dongting Lake region and used fuzzy comprehensive evaluation methods,this article discussed Dongting lake regional soil fertility distribution and influencing factors.The results showed that the regional soil fertility was in high level,but the soil fertility difference in different region.The geological background has the remarkable influence to soil fertility,The soil fertility of fluvial plain is the highesta,nd the soil grown from hillock laterite and granite is ...