| 阅海湿地芦苇NPP遥感估算及其时空变化分析 |
| |
| 引用本文： | 钟宇峰,牛涛,贾文贤,崔云磊,刘洪利,邓博文,崔洋,吴门新.阅海湿地芦苇NPP遥感估算及其时空变化分析[J].气象与环境学报,2021,37(6):71-78. |
| |
| 作者姓名： | 钟宇峰 牛涛 贾文贤 崔云磊 刘洪利 邓博文 崔洋 吴门新 |
| |
| 作者单位： | 1. 中国矿业大学(北京), 北京 1000832. 富景天策(北京)科技集团有限公司, 北京 1000893. 中国气象科学研究院 灾害天气国家重点实验室大气化学实验室, 北京 1000814. 中国地质大学(北京), 北京 1000835. 宁夏回族自治区 气候中心, 宁夏 银川 7500026. 国家气象中心生态和农业气象中心, 北京 100081 |
| |
| 基金项目： | 国家重点研发计划项目(2018YFC1506500);中国气象局保障生态文明气象监测与评估能力示范(宁夏)项目 |
| |
| 摘 要： | 利用1987—2012年Landsat 5、2013—2017年Landsat 8数据，分析1987—2017年阅海湿地净初级生产力（NPP）时空变化趋势。同时，基于高分数据（GF2）估算2015—2017年4 m分辨率NPP时空变化，与Landsat结果进行对比。结果表明：在各年7—8月的NPP中2002年NPP值最低，为691.11 g·C·m-2，2003—2007年NPP均值先增大后减小，2008年后芦苇NPP均值趋于平缓；20世纪80—90年代，芦苇广泛分布于阅海湿地湖中心及四周区域，21世纪00—10年代，芦苇集中分布于湖域东北部区域；1987—2017年，阅海湿地芦苇NPP变化区域差异明显。阅海湿地东北部区域呈降低趋势。对比阅海湿地2016—2017年GF2与Landsat反演区域平均NPP，二者并无显著差异，且变化趋势也一致。
|
| 关 键 词： | 遥感反演 净初级生产力 芦苇 |
| 收稿时间： | 2020-08-03 |
Remote sensing estimation of reed NPP in Yuehai Wetland and characteristic analysis of its temporal and spatial changes |
| |
| Yu-feng ZHONG,Tao NIU,Wen-xian JIA,Yun-lei CUI,Hong-li LIU,Bo-wen DENG,Yang CUI,Men-xin WU.Remote sensing estimation of reed NPP in Yuehai Wetland and characteristic analysis of its temporal and spatial changes[J].Journal of Meteorology and Environment,2021,37(6):71-78. |
| |
| Authors: | Yu-feng ZHONG Tao NIU Wen-xian JIA Yun-lei CUI Hong-li LIU Bo-wen DENG Yang CUI Men-xin WU |
| |
| Abstract: | Using Landsat 5 data from 1987 to 2012, and Landsat 8 data from 2013 to 2017, the spatio-temporal characteristics and changing trends of net primary productivity (NPP) in Yuehai Wetland from 1987 to 2017 were analyzed.At the same time, based on high-resolution (Gaofen) data (GF2), the spatio-temporal changes of NPP with 4 m resolution from 2015 to 2017 were estimated and compared with Landsat results.The results show that the NPP in 2002 was the lowest with a value of 691.11 g·C·m-2, and the average NPP increased firstly and then decreased from 2003 to 2007.After 2008, the average NPP tended to be stable.Reeds are distributed widely in the central and surrounding areas in Yuehai Wetland from the 1980s to the 1990s.And then reeds are concentrated in the northeastern region of the wetland from the 2000s to the 2010s.NPP of Yuehai Wetland changed significantly from 1987 to 2017.The area in the northeastern region of Yuehai Wetland is a decreasing trend.Comparing the average NPP retrieved by GF2 and Landsat in Yuehai Wetland from 2016 to 2017, it can be found that there is no significant difference between them and their changing trends are consistent. |
| |
| Keywords: | Remote sensing retrieval Net primary productivity Reed |
|
| 点击此处可从《气象与环境学报》浏览原始摘要信息 |
| 点击此处可从《气象与环境学报》下载免费的PDF全文 |
|
