|
|||||
|
|
| 华北平原不同生长发育期作物长势对气候因子的响应研究 | |
| 引用本文： | 苗晨,申双和,贾根锁.华北平原不同生长发育期作物长势对气候因子的响应研究[J].气候与环境研究,2014,19(6):703-712. |
| 作者姓名： | 苗晨 申双和 贾根锁 |
| 作者单位： | 1. 南京信息工程大学应用气象学院，南京 210044; 中国科学院大气物理研究所东亚区域气候-环境重点实验室，北京 100029 2. 南京信息工程大学应用气象学院,南京,210044 3. 中国科学院大气物理研究所东亚区域气候-环境重点实验室,北京,100029 |
| 基金项目： | 国家重点基础研究发展计划项目2012CB956202 |
| 摘 要： | 利用卫星遥感归一化植被指数(NDVI)时间序列数据和站点气象数据,从农作物生长发育过程的角度,分析了1981~2008年华北平原农田在12个生长发育期(冬小麦8个、夏玉米4个)对降水和温度不同的响应特征。研究区农田植被指数对降水响应的滞后性强于对温度的滞后性,其中对降水最为敏感的是前1和前2个生长发育期,对温度最为敏感的是同期和前1个生长发育期。不同种类作物在不同时期对气候因子响应不同:冬小麦发育中后期、夏玉米发育中期,绝大多数站点植被指数与降水呈正相关;冬小麦生长发育前中期植被指数与温度呈显著甚至极显著正相关。冬小麦出苗期温度、返青期温度和返青期降水分别与不同时期植被指数显著相关,出苗期和返青期为研究区农田长势对气候因子响应的敏感期。 |
| 关 键 词： | 归一化植被指数 温度 降水 作物生长发育期 华北平原 |
| 收稿时间： | 2013/7/29 0:00:00 |
| 修稿时间： | 2014/3/14 0:00:00 |
Response of Cropland NDVI to Climatic Factors during Different Phenophases in the North China Plain |
|
| MIAO Chen,SHEN Shuanghe and JIA Gensuo.Response of Cropland NDVI to Climatic Factors during Different Phenophases in the North China Plain[J].Climatic and Environmental Research,2014,19(6):703-712. | |
| Authors: | MIAO Chen SHEN Shuanghe and JIA Gensuo |
| Institution: | College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044;Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044;Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
| Abstract: | The heterogeneous responses of cropland Normalized Difference Vegetation Index (NDVI) to temperature and precipitation were analyzed using Advanced Very High Resolution Radiometer (AVHRR) NDVI time series and station- observed climate data from 1981 to 2008 during 12 phenophases including eight for winter wheat and four for summer maize over the North China Plain. The results showed that the lagged response of NDVI to precipitation was more noticeable than that to temperature and that NDVI was more sensitive to the precipitation (temperature) during the last and previous two phases (current and last phases). Additionally, the response varied among crop species and phenophases. The correlation coefficients between NDVI and precipitation were positive at most sites in the mid-late growing season (medium growing season) of winter wheat (summer maize). NDVI was also positively correlated to temperature at the significance level of 0.05 in the early-mid growing season of winter wheat. Furthermore, NDVI was strongly related to temperature (precipitation) during germination and turning-green (turning-green) phases. Therefore, germination and turning-green were the phases during which crop growing was largely influenced by climatic factors in the region. |
| Keywords: | Normalized difference vegetation index (NDVI) Temperature Precipitation Phenophase North China Plain |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《气候与环境研究》浏览原始摘要信息 | |
| 点击此处可从《气候与环境研究》下载免费的PDF全文 | |