Studies On Grain Production Capacity And Sustainable Use Of Agricultural Soil And Water Resourses In Inner Mongolia

Agricultural Soil and Water Resources (ASWR) is a complicated agricultural resources which exists space and time-space segregation, has anfractuous relationships with Grain Production Capacity (GPC). Its latent determined by the degree and sustentation-capacity of the Sustainable Use of Agricultural Soil-Water Resources (SUASWR). Land coordination can promote GPC and realize SUASWR by improving limitative factors of ASWR. Nowadays, we know this relationships superficially .This article take Inner Mongolia for example, analyzing the latest domestic and international researching achievements, accroding to some differert amalgamation of subject, drawing assistance from previous information of hydrology, meteorology, water resources, land investigation and land consolidation, disclose complicated relationship by building mode calculating to built a controllable platform of National Grain Safety. The main contents and conclusions as follows:(1) This paper analyzed the latest domestic and international researching achievements, existing problems and direction of research. Explained the definition of ASWR, GPC, SUASWR and production capacity, and expounded the viewpoint of carrying out related researches that base on factors and affecter.(2) This research evaluated ASWR, grain yields, GPC, main influential factors and time-space disposition regularity of Inner Mongolia, and built regional successive, mult-hiberarchy, spatial data system.(3) The article establish the system of cropland grade classification index in Inner Mongolia, and cropland in Inner Mongolia were divided into 22 grades according to natural quality and 17 grades according to usable quality. Set up model and calculated conversion quotient between different land grades, realized the comparability of different grades cropland. The maximum conversion quotient of grade 17 land to grade 1 was 4.8. Set up model of production capacity evaluation, calculated potential capacity of temperature, moisture, soil and land utilization four. Started the research of examination and calculation of production capacity, calculated theoretical GPC was 20.8 billion kilograms, total production capacity was 73.18 billion kilograms, which exceeded the practical GPC 17.25 billion kilograms and showed that there were great potentiality of ASWR. Simulated and evaluated the relationships between GPC and affective factors.(4) SUASWR fuzzy evaluation in Inner Mongolia was studied according to administrative area and drainage basin, revealed that integrative index was 0.121～0.973, potential index was 3.252～1.025, and SUASWR would be realized in a mass.(5) Evaluated the amount of water resources and water utilization situation and predicted water use amounts of every industry in year 2010, 2020 and 2030. In addition, the useable agricultural water resource are 26.493,23.389 and 19.564 billions stere, according to land coordination and saving irrigation, irrigation area would be reach 358.31,440.06 and 525.66 ten thousand hectare, built up ASWR coupling collocate model and predicted GPC that are 22.717,25.805 and 28.844 billion kilograms. GPC and cropland grade classification are more improved compare to actuality year.(6) Carried out observation of land consolidation items, confirmed that all measures could improve restrict factors effectively, ratio of water save achieved from 10 to 60 percent, GPC improved from 5 to 40 percent and land grade enhanced 1 to 4 grade, which is import for"managing land, saving water, improving foodstuff, and rich people"in Inner Mongolia.To sum up, this paper set up systems of region scale land grade, conversion and production capacity calculation by connecting ASWR with its constituents on the basis of investigation; raised evaluation method of GPC, SUASWR and land consolidation mode; verified functions of land consolidation for improving GPC and realized SUASWR and provided helpful reference for scientific and reasonable utilization of Inner Mongolia ASWR. Due to this study is in primary stage in domestic, and the limited knowledge level of writer, there maybe many vulnerability and disputes in this paper, that is the just aim of the writer to write the paper.