基于三角模型河南省耕地集约利用趋势及时空分异

Trend and Spatial-temporal Differentiation of Cultivated Intensive Utilization of Farmland in Henan Based on Triangle Model

耕地集约利用事关国家粮食安全及经济社会可持续发展。以河南省为研究对象，采用三角模型定量分析1996。2008年河南省耕地集约利用状态及趋势，并分析其时空分异特征。研究表明：（1）1996．2008年河南省耕地集约利用状态总体呈增加态势，并且耕地集约利用状态依次为一般集约、强集约、很强集约三个阶段。受自然灾害等影响，2003和2004年出现波动；（2）河南省耕地集约利用存在三个明显趋势：T1、T3和T2，1996～1999年呈T1趋势，1999。2005年为T3趋势，2005—2008年是T2趋势；（3）河南省耕地集约利用存在时空分异，地处粮食核心生产区的焦作、漯河、许昌、商丘、鹤壁等耕地集约利用程度居前列，而三门峡以及经济发展较好的郑州、洛阳等耕地集约程度较低。

Cultivated land intensive use plays an important role in national tooct securtty- economic and social development. Taking Henan province as an example, the euhivated land intensive use and trend are analyzed based on triangle model from 1996 to 2008, in which the spatial and temporal varying characteristics are revealed. The results indicate that： 1） the cultivated land intensive use degree shows an increasing trend from 1996 to 2008, with ordinary intensive, strong intensive and very strong intensive phases. There are fluctuations for natural disasters in 2003 and 2004. 2） There are three obvious trends of cultivated land intensive use in Henan. They are T1 for 1996 - 1999, T3 for 1999- 2005 and T2 for 2005 - 2008, respectively. 3） Cultivated land intensive use of Henan has temporal and spatial differentiation characteristics. Districts lying in core grain-producing area have high cultivated land intensive use degree, such as Jiaozuo, Luohe, Xuchang, Shangqiu, Hebi and so on. On the contrary, San menxia, Zhengzhou and Luoyang have low cultivated land intensive use degree.