| 史泽艳,高晓飞,谢云.SUNSCAN冠层分析系统在农田生态系统观测中的应用[J].干旱地区农业研究,2005,(4):78~82 |
| SUNSCAN冠层分析系统在农田生态系统观测中的应用 |
| The application of SUNSCAN canopy analysis system in the measurement of field ecosystem |
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| DOI：10.7606/j.issn.1000-7601.2005.04.16 |
| 中文关键词: 观测仪器 光合有效辐射 LAI SUNSCAN冠层分析系统 |
| 英文关键词:measurement instrument photosynthetic active radiation LAI SUNSCAN canopy analysis system |
| 基金项目:国家自然科学基金资助重点项目(40235056)； 国家教育部博士点基金项目与中国科学院禹城综合试验站资助项目 |
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| 中文摘要: |
| 在夏玉米实验田对英国Delta公司生产的SUNSCAN冠层分析系统进行了实地验证,观察其对冠层上下PAR、LAI等生态指标的观测状况。结果表明:该系统可同步实现冠层顶部入射PAR、冠层底的TPAR、LAI及入射PAR中散射辐射占的比例等多项生态指标的测量,克服了以往仪器观测的繁琐及时间上的不同步性,其中对LAI的多样本无损伤性观测较传统方法更具有代表性;自动记录观测具有动态监测太阳总辐射的日变化功能,该系统最佳观测时段是上午9∶00～11∶00和下午13∶00～15∶00。SUNSCAN冠层分析系统是一种高效、轻便的测量工具,具有较大的应用潜力。 |
| 英文摘要: |
| SUNSCAN canopy analysis system made in Delta company of England was validated in the experimental field of summer maize to observe its application in the measurement of ecological parameters such as PAR above and beneath the canopy and LAI. The results show that SUNSCAN system can measure PAR above the canopy, TPAR beneath the canopy and LAI etc at one time. So it surpasses the other instruments that are complicated in measurement and un-synchronous in time, and it is advantageous in the measurement of numerous samples with no damnification. The instrument may operate automatically to observe the diurnal dynamic of total solar radiation. The best measurement period of Sunscan system is (9∶00)11∶00 a.m. and 13∶0015∶00 p.m. In a word, SUNSCAN canopy analysis system is a portable and highly efficient instrument with a great potential of application. |
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