The Analysis Of Arable Land Intensity Of Henan Province Base On The Principle Of Suitability

In recent years the evaluation of land suitability is one of the main components of study on land resources at home and abroad. It provides a reliable basis mainly for land use analysis, land use planning, rational development and utilization of land resources and so on. Arable land is the essence of land resources, is very scarce irreplaceable natural resources and agricultural production factors. In order to make use of arable land reasonably and efficiently, basic on the theory of evaluation of land suitability, select the grain output as the intensity indicator of arable land use, research with correlation analysis. It has Realistic Significance and theoretical significance to protect the arable land reasonable, enhance the level of grain output.This thesis basic on the relevant statistical data of Henan Province from 1999 to 2008, apply the Principle of Suitability, combine the condition of Henan Province, research the arable land use level from to kinds of mathematical methods. The main content of research is:1)Firstly, make a comment to the related theory of the evaluation of land suitability. The main point is to summarize and introduce the evaluation of land suitability in FAO'land evaluation outline', discuss the method use in evaluation of land suitability usually, point out the applicable scope to each other.2)Chose the arable land in Henan Province as the study area, collect the relevant data in recent ten years, research the arable land use by theory of MLR(Multiple Linear Regression)and PCA (principal component analysis), chose the unit area grain yield as delegate of arable land use intensity, research the dominating factor influence the arable land use intensity.3)Obtain the result on the basis of analysis. The main factor influence the arable land use intensity analyses by the Multiple Linear Regression are population density, urbanization rate, GDP per capita, multiple cropping index and chemical fertilizer dosage per hectare. Through principal component analysis we know that component 1 has more influence to unit area grain yield, it include population density, urbanization rate, GDP per capita, multiple cropping index, chemical fertilizer dosage per hectare and agricultural machinery dynamic per hectare. The two kind of analysis method explain that society and economy condition have more influence to the arable land use intensity.The arable land use can develop steadily in recent years in Henan Province;according to the national policy orientation, can make effective use to macro policy making development, therefore, insure the grain stable yield and high yield. Even so, the man-land relationship is still very worthy of attention, so we have to do these:1)Local conditions. Combine the condition of Henan Province to other regions with local condition, use the arable land scientifically, and strengthen the agricultural development.2)Control the population strict. human-land conflict become more serious, population increase make overburdened pressure to arable land, so we have to guarantee that arable land resource be uninfluenced and to achieve use reasonable, must carry out the measure of control population strict, control the population increase, coordinate the man-land relationship.3)Protect arable land. Arable land protection is basic right of every citizen, to realize total arable land invariant, must strengthen arable land protection work realistically, unsure the grain production safety, ensure the production efficiently, ensure the grain output.4)Do well in water resource rational distribute in each department. In order to ensure water resource for arable land abundant, summarized experience and lesson on soil and water loss have ever had, prevent soil and water loss, continue insist the policy of water and soil conservation work, make overall arrangements; distribute the water resource use reasonably.5)Increase the agricultural investment, science investment, enhance the arable land productivity. Utilize the agricultural technique rationally, improve agricultural water facilities effectively, and increase the agricultural science investment. Excavate potential of contribution the technical progress to arable productivity sufficiently; enhance the arable land use rate.6)Carry out the land manage work actively. Go along the strict land manage work, Enhance the land use saving and intensive, increase the quantity of useable arable land, enhance the rational use rate of arable land, ensure the grain yield, guarantee the grain yield increase but reduce of Henan Province.