Abstract:

It’s grave situation of cultivated land protection in mountainous area and is easy to be ignored.In order to know the situations and main causes of the pressure of cultivated land in Northwest Mountainous Area of Hubei Province in China,this paper
calculated the pressure index of cultivated land since 1997~2007,based on the model of the pressure index of cultivated land,which is the ratio of per capita minimal area of cultivated land and per capita actual area of cultivated land.The result shows that the pressure of cultivated land had tended to decrease from 1997 to 2000,of which the main reason was that the increase speed of food output was faster than that of population.And the pressure index increases after 2001 in total because per capita actual area decreases rapidly and the standard of living increases constantly.After contrasting from Hubei Province and China,it shows that the pressure is greater distinct.There are two main reasons.Firstly,mountainoud cultivated land is affected by changing of cultivated land to woods,and damaging by disaster and construction,which makes actual per capita cultivated land to be on the low level.Secondly,the comparative low level of unit output makes minimal per cultivated land area to be on the high side.In order to achieve food supplies security and socialeconomic sustainable development,we should build right cultivated land protect views and increase output rate of cultivated land by using advanced technology so as to decrease the pressure of cultivated land protection.