ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

基于哨兵-2A模擬反射率及其影像的冬小麥?zhǔn)斋@指數(shù)估算
CSTR:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國(guó)家自然科學(xué)基金項(xiàng)目(41871353,、41471364),、中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)(1610132021009)和中國(guó)農(nóng)業(yè)科學(xué)院科技創(chuàng)新工程項(xiàng)目(CAAS-2022-IARRP-GJ2022-20-2)


Estimation of Harvest Index of Winter Wheat Based on Simulated Sentinel-2A Reflectance Data and Its Real Remote Sensing Imagery
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問(wèn)統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    為驗(yàn)證基于花后累積地上生物量比例動(dòng)態(tài)參數(shù)(D-fG)的作物動(dòng)態(tài)收獲指數(shù)(D-HI)遙感估算方法在大范圍獲取作物收獲指數(shù)空間信息的可行性和有效性,,以我國(guó)黃淮海平原河北省衡水市為研究區(qū),,以冬小麥為研究對(duì)象,,在前期田間冠層尺度確定作物收獲指數(shù)估算敏感波段中心和最大波段寬度基礎(chǔ)上,利用哨兵-2A(Sentinel-2A)遙感模擬反射率數(shù)據(jù)及其真實(shí)遙感數(shù)據(jù)開展基于花后累積地上生物量比例的區(qū)域冬小麥?zhǔn)斋@指數(shù)遙感估算研究,。在基于不同波段組合Sentinel-2A遙感模擬數(shù)據(jù)篩選出的冬小麥動(dòng)態(tài)收獲指數(shù)估算最優(yōu)波段信息基礎(chǔ)上,,利用Sentinel-2A影像數(shù)據(jù)實(shí)現(xiàn)區(qū)域作物收獲指數(shù)空間信息準(zhǔn)確獲取。結(jié)果表明,,在Sentinel-2A多光譜遙感模擬反射率波段λ1(672~680nm)和λ2(855~875nm)條件下,,基于D-fG遙感參數(shù)信息的D-HI估測(cè)精度最高,其中,,均方根誤差(RMSE),、歸一化均方根誤差(NRMSE)和平均相對(duì)誤差(MRE)分別為0.0404、10.83%,、9.56%,,證明Sentinel-2A衛(wèi)星遙感數(shù)據(jù)在冬小麥?zhǔn)斋@指數(shù)估算中具有一定應(yīng)用潛力。同時(shí),,在估測(cè)D-HI精度最高的模擬遙感數(shù)據(jù)波段信息基礎(chǔ)上,,基于Sentinel-2A衛(wèi)星遙感紅光和窄近紅外波段組合的灌漿期不同階段和成熟期D-HI估測(cè)區(qū)域總體驗(yàn)證精度指標(biāo)RMSE、NRMSE和MRE分別為0.0502,、13.81%,、12.00%。上述結(jié)果表明基于Sentinel-2A衛(wèi)星數(shù)據(jù)和花后累積地上生物量比例的作物動(dòng)態(tài)收獲指數(shù)遙感估算方法在大范圍D-HI空間信息獲取中具有一定可行性和有效性,,為基于寬波段多光譜衛(wèi)星遙感數(shù)據(jù)的大范圍作物動(dòng)態(tài)收獲指數(shù)空間信息準(zhǔn)確獲取提供一定技術(shù)方法借鑒,。

    Abstract:

    In order to verify the feasibility and effectiveness of the remote sensing estimation method for dynamic harvest index (D-HI) based on the dynamic fraction of cumulative aboveground biomass after anthesis (D-fG) to obtain the regional spatial information of crop harvest index, the research on the regional estimation of crop harvest index was carried out, which was supported by the previous research results of sensitive band centers and their maximum band widths for crop harvest index estimation at the canopy level. Hengshui City, Hebei Province in Huang-Huai-Hai Plain of China was selected as the study area, and winter wheat was selected as the research object, and the simulated reflectance data of Sentinel-2A and its real satellite remote sensing data were used. Finally, under the guidance of optimal band information for D-HI estimation of winter wheat based on the simulated Sentinel-2A remote sensing data of different band combinations, the Sentinel-2A image data were used to obtain accurate spatial information of regional crop D-HI. The results showed that under the condition of the simulated reflectance bands of λ1(672~680nm) and λ2 (855~875nm), the D-HI estimation accuracy based on D-fG remote sensing information was the highest, the root mean square error (RMSE), normalized root mean square error (NRMSE), and mean relative error (MRE) were 0.0404, 10.83%, and 9.56%, respectively, which proved that Sentinel-2A satellite remote sensing data had certain application potential in the estimation of winter wheat harvest index. At the same time, supported by the band information of simulated remote sensing data with the highest estimation accuracy of D-HI, the RMSE, NRMSE and MRE were 0.0502, 13.81%, and 12.00%, respectively, in the overall verification of D-HI estimation at different grain filling stages and maturity stages based on red band and narrow NIR band of Sentinel-2A satellite remote sensing data. The above results indicated that the remote sensing estimation method of crop D-HI based on Sentinel-2A satellite data and the fraction of cumulative aboveground biomass after anthesis had certain feasibility and effectiveness in the acquisition of regional spatial information of D-HI, and it could provide a certain technical method reference for the accurate acquisition of crop D-HI spatial information based on multispectral satellite remote sensing data in a large region.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

任建強(qiáng),張寧丹,劉杏認(rèn),吳尚蓉.基于哨兵-2A模擬反射率及其影像的冬小麥?zhǔn)斋@指數(shù)估算[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2022,53(12):231-243. REN Jianqiang, ZHANG Ningdan, LIU Xingren, WU Shangrong. Estimation of Harvest Index of Winter Wheat Based on Simulated Sentinel-2A Reflectance Data and Its Real Remote Sensing Imagery[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(12):231-243.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2022-08-11
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2022-11-02
  • 出版日期:
文章二維碼