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中国农学通报 ›› 2024, Vol. 40 ›› Issue (26): 66-72.doi: 10.11924/j.issn.1000-6850.casb2023-0631

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

像元尺度上薏米植被指数与气象因子的关系研究

尹佳琪1(), 张梅1(), 罗箭宇2, 陈玉光1, 杨欣虹3, 董雨鑫1   

  1. 1 辽阳市气象局,辽宁辽阳 111010
    2 凤城市气象局,辽宁凤城 118100
    3 灯塔市气象局,辽宁灯塔 111300
  • 收稿日期:2023-09-05 修回日期:2024-04-18 出版日期:2024-09-15 发布日期:2024-09-11
  • 通讯作者:
    张梅,女,1967年出生,辽宁辽阳人,高级工程师,本科,主要从事生态与农业气象服务方面的工作。通信地址:111010 辽宁省辽阳市白塔区中心路166号 辽阳市气象局,Tel:0419-4226625,E-mail:
  • 作者简介:

    尹佳琪,女,1995年出生,吉林长春人,助理工程师,硕士,主要从事生态与农业气象服务方面的工作。通信地址:111010 辽宁辽阳白塔区中心路166号 辽阳市气象局,Tel:0419-4226625,E-mail:

Study on Relationship Between Coix Seed Vegetation Index and Meteorological Factors at Pixel Scale

YIN Jiaqi1(), ZHANG Mei1(), LUO Jianyu2, CHEN Yuguang1, YANG Xinhong3, DONG Yuxin1   

  1. 1 Liaoyang Meteorological Bureau, Liaoyang, Liaoning 111010
    2 Fengcheng Meteorological Bureau, Fengcheng, Liaoning 118100
    3 Dengta Meteorological Bureau, Dengta, Liaoning 111300
  • Received:2023-09-05 Revised:2024-04-18 Published:2024-09-15 Online:2024-09-11

摘要:

本文旨在研究气象条件对薏米生长的影响,为更好的了解气象条件对薏米生长的影响,通过使用归一化植被指数(NDVI) 作为衡量指标。基于辽阳薏米种植区像元尺度上2013—2020年的遥感数据,结合同期气象台站的气象数据,采用相关分析和T-检验等方法,进行了逐个像元的分析。能够很好的反映植被长势和空间特异特征。结果表明,在多年时间序列水平上,生长季的气象因子变化对薏米植被生长均有促进作用。其中,气温、降水、日照、相对湿度与薏米NDVI值呈现显著的正相关关系,尤其气温的影响最为明显。薏米NDVI对前推一月气温敏感性反映最强,并且在生长季薏米NDVI对气温滞后效应最强,其次是对日照时数、相对湿度滞后效应,而对降水的滞后效应则不显著。本研究对于理解薏米种植区的生态环境变化及其对薏米生长趋势的预测具有重要意义。

关键词: 薏米, 气象因子, NDVI, 相关分析, 气象条件, 气温敏感性, 滞后效应

Abstract:

The Normalized Vegetation Index (NDVI) can effectively reflect vegetation growth and spatial characteristics. In order to better understand the impact of meteorological conditions on the growth of Coix seed, this paper uses correlation analysis, T-test and other methods to conduct pixel by pixel analysis based on the remote sensing data of Liaoyang Coix seed growing region from 2013 to 2020 on the pixel scale, combined with the meteorological data of meteorological stations in the region from 2013 to 2020. The results indicate that at the level of multi-year time series, changes in meteorological factors during the growth season have a promoting effect on the growth of Coix seed vegetation. Temperature, precipitation, sunlight, relative humidity have significant positive correlations with Coix seed NDVI values, with temperature being the most correlated. Coix seed NDVI has the strongest sensitivity to the temperature in the previous month; In growing season, NDVI has the strongest hysteresis effect on temperature, followed by sunshine duration and relative humidity, and has no significant hysteresis effect on precipitation. The research results are of great significance for predicting the growth of Coix seed based on the ecological environment changes in the Coix seed planting area.

Key words: Coix seed, meteorological factors, NDVI, correlation analysis, climatic conditions, air temperature sensitivity, lag effect