精品文档---下载后可任意编辑1990-2024 年中国耕地利用集约化的时空特征及产量效应的开题报告摘要:本文以 1990-2024 年为时间范围,采纳耕地集约化利用指数方法,分析了中国耕地利用集约化水平的时空特征以及其对农作物产量的影响
讨论表明,随着时间的推移,中国耕地利用集约化水平总体上呈现出逐年提高的趋势,但不同地区差异较大
另外,耕地集约化利用水平对农作物产量具有显著的正向影响,不同作物之间产量效应有所不同
关键词:耕地利用集约化;耕地集约化利用指数;农作物产量;时空特征Abstract:Taking the period of 1990-2024 as the temporal scope, this paper analyzes the spatial and temporal characteristics of the level of intensive land use in China and its impact on crop yield by using the index of intensive land use
The study shows that with the passage of time, the level of intensive land use in China shows an overall increasing trend, but there are large differences in different regions
In addition, the level of intensive land use has a significant positive impact on crop yield, and the yield effect is different for different