Study On Spatial Allocation Of Land, Water Resources And Its Impact On Farmland Productivity In Henan Province

Water and land resources are the foundation of human life, and support conditionsof agricultural production. Agricultural water and land resource is a kind of resourcewith spatial and temporal variation and complexity, the efficiency level of the two playsan important role in boosting the Farmland Productivity. Henan province is the corearea of national grain production and only one of the six provinces with grainredeployment capacities. Therefore, there is great significance of studying on the spaceallocation status of water and land resources and its impact on production capacity inHenan Province.The object of study was based on water and land resources and agriculturalland capacity in Henan Province, with the help of model method, comparativeanalysis, correlation analysis and spatial analysis software, the main findings andconclusions are as follows:The scarcity of water and non-balanced distribution of spatial and temporalare still the problem in Henan province. Years of average water resources are403.53×108m~3and per capital hold of water resources is406.87×108m~3, quantityof water in mu is407×108m~3(mu, a unit of area=0.0667hectares), separatelythe1/6and1/5of the national per capita water resources.The spatial distributionof water resources in the South is more than the north area, east and west ismore than the back-land,plain is less than mountainous.The general trend is moreor less alike rainfall distribution and over60percent of the rainfall was mainlyin June to September.The number and quality of cultivated land resources in Henan Province isrich in total, but poor in per capital, fast in decline，poor in general quality andcentralized distribution. The proportion of arable land in high, medium and lowquality is roughly18:36:46,the transformation of low-yielding fields is difficult.In Henan province,75per-cent of the arable land resources are mainly distributedin the plain regions which cover55.7percent of the total land area. Arable landresources mainly distributed in eastern plain, Tai hang piedmont mountain areaand Nanyang basin. The spatial distribution of water and soil resources in Henan Province wereobviously dislocated, that is, poor matched. Because of centralized spatial distribution of water and land resources, the region whose reclamation rate was over48percent is mainly in the Huang-Huai-Hai Plain which is in the east of Beijing-Guangzhou railway,and the water resources in this region account for42percentof the province. Thus3/4of the provincial water and soil resources are poorlymatched, and the distribution is like this: south is better than the north,the mountain areas are better than the hills and plains.In Henan province,the effect of space allocation of land and water resourceson the productivity appears positive correlation: There is even stronger positivecorrelation in these areas such as Huanghuai Plain area, Yan-Taihang Piedmontmountains areas,Hebei-Henan-Shandong low lying Plain areas,it perfectly explainsthat the space allocation of land and water resources has obvious impact on farmland productivity.