塔里木河下游铁干里克绿洲土地生产潜力综合研究

Study on Land Productive Potential Comprehensive of Tieganlike Oasis in Tarim Downstream

采用潜力衰减法对塔里木河下游铁干里克绿洲农业资源条件进行了分析,估算了土地生产潜力,并采用土地生产潜力对气候因素的敏感度和适应能力级别评价了该区域对气候变化的响应。研究表明:在保证充足的灌溉用水和土壤理化性质良好的条件下,研究区土地生产潜力以5.66%的年增长率递增。研究区土地生产潜力对温度和降水的敏感度不大,对全球气候变化的适应能力也较强,人工引水水资源缺乏,土壤盐渍化程度较高、土壤水肥较差是造成研究区土壤生产潜力低下的主要原因。

Adopting potential attenuation method to analyze Tieganlike oasis in Tarim River downstream agriculture resources condition,the study estimates the land productive potential,and evaluates the response to the climate change in this region by using the land productive potential of climate factors sensitivity and adaptability level.The research indicated：in the assurance of enough irrigation water and high-quality soil physical and chemical properties,the land productive potential in research area increases by 5.66% annual growth rate.Study area of land productive potential is not very sensitive to temperature and precipitation and it has strong adaptability to global climate change.The exile artificial diversion water resources,the high soil salinification degree and the poor soil fertility primarily cause low soil productive potential in the research area.