关键词: 耕地, 土壤, 养分状况, 变异, 黄冈市

Abstract: With the application of conventional statistics and GIS technology,the temporal and spatial variation analysis of soil nutrient status data between 1979-1983 and 2005-2016 was carried out in Huangganga city,Hubei province. The survey results showed that,the proportion of the four grades cultivated land of cultivated land in the whole city from 2005 to 2016 was first-class of 27.19%,second-class of 32.73%,third-class of 25.44%,and fourth-class of 14.63% respectively. Compared with 1979 to 1983,the proportion of the first and third class was basically equal,the proportion of the second class decreased,and the proportion of the four class increased sharply. It showed that the farmland productivity was decreasing in general.

Key words: cultivated land, soil, nutrient condition, variation, Huanggang city