中文摘要：

借助“污染”与“清洁”两部门模型,分析得出研发投入与环境污染可能出现类似于“先增加后减少”的关系,政府对于研发相关激励政策将显著影响环境状况的发展。运用空间计量分析工具对我国31个省级1998～2013年的数据进行实证发现：研发投入对环境的影响作用呈现倒U型的关系,目前我国研发投入的增加恶化了环境质量,但长期内存在拐点;我国研发投入配置不合理,清洁能源技术发展迟缓,人口压力仍然存在,这些都对我国的环境形势提出严峻考验,需结合市场调节和政府引导,加强省域间密切合作,努力协调好经济、人口与环境的系统性关系。

英文摘要：

Using two sectors model, it is found that pollution may tirst Increase and then decrease with the growing of R＆D, and the government＇s relevant policies will significantly influence the envi- ronment. Then by using the spatial-econometric analysis tools, it is found that R＆D investment＇s im- pact on the environment effect presents inverted U-shaped relationship, the increase of R＆D deterio- rates environmental quality in China now, and there would be a turning point in the long run. It is concluded that China＇s R＆D is inconsequently allocated, clean energy technology is being developed slowly, environmental pressure from population still exists, and it should be combined with market and government Intervention to coordinate the relationship among economics, population and environ- ment. Key words.