耕地利用集约度评价及变化研究——以阿勒泰市为例

Intensity evaluation and Change research County Cultivated Land Use——Take Aletai city as an example

分析近20年来阿勒泰市耕地利用集约度的变化规律以及与粮食生产的关系,为县域耕地集约利用和粮食安全提供决策依据。依据耕地利用集约度的定义,建立耕地利用集约度评价指标体系,采用熵权法计算指标权重,综合指数法计算各年耕地利用集约度。研究结果表明近20年来阿勒泰市耕地利用集约度呈阶段性上升趋势,耕地利用投入要素比重不断变化,耕地利用强度呈先升后降的趋势,粮食单产和粮食总产呈上升趋势。研究结论为近20年来阿勒泰市耕地面积增加,耕地生产要素投入持续增加,提高土地利用程度和集约利用度。

Analysis of the past 20 years Aletai cultivated-intensive use intensity and the changes of the relationship between food production and for the cultivated intensive use of county land arid food security to provide basis for decision -making. Based on the definition of intensive cultivated land, the establishment of a farmland use of intensive evaluation index system, using the right method to calculate-entropy index weight, the composite Index of years of intensive land use. Results： Over the past 20 years Aletai intensive use of arable land was phased upward trend, the proportion of cultivated land use input elements constantly changing, the land use intensity is up after the first downward trend in grain yield and total yield of grain were on the rise. The conclusion of the study： Over the past 20 years Aletai steady decline in arable land, the land continued to increase input factors of production, land use intensity increases, offset by a reduction of arable land to enable the negative effects of production.