摘要
文章基于MODIS下MOD17A3、MCD12Q1产品,结合气温、降水数据,利用距平分析、趋势线分析以及相关分析等方法,对河南省2001年至2010年农田生产力的时空变化格局及影响因素进行了研究。结果表明:河南省农田生产力整体呈现东南高、西北低的态势;研究期内农田生产力呈现减少趋势的面积比例为4.98%,集中分布在信阳市的潢川县、固始县;河南省大部分农田的NPP与气温成正相关,成负相关的农田集中分布在西北边缘一带;农田NPP与降水成正相关的区域分布偏北,成负相关区域分布偏南,南阳盆地一带较为集中。
Based on MOD17A3, MCD12Q1 data from MODIS satellite （Terra and Aqua）, with the temperature and precipitation information, using anomaly analysis, trendline analysis and correlation a- nalysis, this paper studied the temporal-spatial changes and the influential factors on the farmland produc- tivity from 2001 to 2010 in Henan province. The findings are as follows, the farmland productivity dis- played the tendency of high productivity in the southeast of Henan and low productivity in the northwest; from 2001 to 2010, 4.98% of farmland productivity was decreasing, concentrated in Huangchuan county and Gushi county of Xinyang; NPP in most of the farmland was closely relative to the temperature in Henan province, the farmland whose NPP was in negative correlation with the temperature was distribu- ted at the edge of northwest of Henan province; the farmland whose NPP was closely relative to the pre- cipitation was found in the north of Henan province, while that in negative correlation was mainly in southern Henan province, concentrated in Nanyang Basin.
出处
《测绘科学》
CSCD
北大核心
2014年第11期67-71,共5页
Science of Surveying and Mapping
基金
教育部人文社科研究规划基金项目(10XJA790011)
陕西师范大学中央高校基本科研业务费专项资金项目(GK201302031)
国家自然科学基金项目(41071057)
