Delineation of Suitable Areas for Maize in China and Evaluation of Application for the Technique of Whole Plastic-Film Mulching on Double Ridges
Climate, topography, soil and land use data which closely associated with the distribution of maize (Zea mays L.) has been collected and collated to identify the suitable areas for maize on condition of nature and using the tech-nique of whole plastic-film Mulching on Double Ridges in China, the database of these factors have been created in the current article. The weights of these factors, criteria and suitability levels have been defined using MultiCriteria Evaluation (MCE) approach based on Geographic Information System (GIS), each factor was classed into five suitability levels: Most suitability, Moderate suitability, and medium, Moderate unsuitability and Unsuitability. Pair-wise comparison matrixes were made to get the weights of each factor, the suitability maps of the factors have been obtained by overlaying these layers according to their weights, got the suitability map for maize. The suitable areas map was cre-ated by the suitability map and the land use map which has been masked the non-cultivated land. The result indicated that the higher yield of maize can be gained from 4.535xl05 km2 which distributed in 741 counties inl6 provinces. In accordance with the method of above, analysis the suitable area after the techniques of whole plasticfilm mulching on double ridges was used. The re-sults showed the higher yield could be got in 6.145X105 km2, some areas of Gansu, Inner Mongolia and other places in arid and semiarid areas that cant distribute or only have low yield maize could get higher yield after using the technique of whole plastic-film mulching on double ridges. With the increased requirement of food, the new techniques and the more perfect regional planning of grain could be take into account for socio-political and environment issues.
Multi-Criteria Evaluation (MCE) Spatial analysis whole plastic-film mulching on double ridges Geographic information system (GIS)
Chaojie Jia Wenlong Zhao Yaxiong Chen Guojun Sun
MOE Key Laboratory of Arid and Grassl and Ecology, Lanzhou University,Lanzhou, Gansu Province, 73000 MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University,Lanzhou, Gansu Province, 730000
国际会议
南昌
英文
390-400
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）