摘要
文章旨在研究区域土地利用动态变化及其驱动机理,以期为该区域土地利用的可持续发展提供决策支持.通过分析1999-2008年10年间九龙坡区土地利用数据,阐述该区域土地利用变化情况,并借助SPSS软件对驱动因素进行主成分分析.结果显示,近10年来影响九龙坡区耕地利用变化的主要驱动因素为人口、经济结构和农民福利；影响建设用地利用变化的主要驱动因素为人口、经济发展和农村居民点用地集约化程度.
Abstract
In order to improve nitrogen removal efficiency, strengthen the denitrification treatment effect of waste water, based on extensive literature, the author concluded in-depth exploration of the major wetland nitrogen removal mechanism-nitrification nitrogen, analyzed the impacts of wetland removal efficiency of the main factors, summarized the status of wetland nitrogen, and proposed wetland denitrification research and research directions: improving dissolved oxygen, the optimum parameters such as temperature, Ph and so on, increasing the number of microorganisms, development of efficient matrix, etc. The shortage was lack of discussing the other nitrogen technology, such as shortcut nitrification and denitrification, simultaneous nitrification and denitrification, also lack of discussion of nitrogen response model, still needed a large number of documents through the summary and the experiment which demonstrated the other nitrogen technology, proposed the nitrogen reaction model.
国家科技期刊平台
NSTL
维普
万方数据