Spectroscopy and Spectral Analysis, Volume. 41, Issue 7, 2205(2021)
Research in Crop Yield Estimation Models on Different Scales Based on Remote Sensing and Crop Growth Model
Figures & Tables(10)
Fig. 2. Comparison of WOFOST simulated yield with site-measured yield
Fig. 3. LAI (a) and WSO (b) daily outputs from 50 random simulations of the WOFOST
Fig. 4. The coefficient of determination (
Fig. 5. Comparison of SCYM estimated yield with site-measured yield
Fig. 6. Spatial distribution of relative error between the SCYM estimated yield and the site-measured yield
Table 1. Range of calibrated values of maincrop parameters of WOFOST model
View tableView in ArticleTable 1. Range of calibrated values of maincrop parameters of WOFOST model
参数名称 定义 单位 取值范围 TSUM1 出苗至开花有效积温 ℃·d 600.0~1 500.0 TSUM2 开花至成熟有效积温 ℃·d 500.0~1 200.0 IDSOW 播种日期 d 273~313 TDWI 初始生物量 kg·hm-2 100~210 SPAN 叶片衰老系数 d 21~41 LAIEM 出苗时叶面积指数 hm-2·hm-2 0.136 5 CVL 叶生长同化物转化效率 kg·kg-1 0.485~0.685 CVO 贮存器官生长同化物转化效率 kg·kg-1 0.729~0.81 CVR 根同化物转化效率 kg·kg-1 0.694 CVS 茎同化物转化效率 kg·kg-1 0.662~0.762 EFFTB 对应生育期单片光能利用效率 kg·hm-2·h-1·J-1·m-2·s-1 0.35~0.5 AMAX01(DVS=0.00)
AMAX02(DVS=1.00)
AMAX03(DVS=1.30)
AMAX04(DVS=2.00)叶片最大CO2同化速率 kg·hm-2 35.83
38.83
30~35.83
4.48SLA01(DVS=0.00)
SLA02(DVS=0.50)
SLA03(DVS=2.00)比叶面积 hm2·kg-1 0.001 25~0.002 12
0.001 35~0.002 75
0.0~0.001 5
Table 2. Seasonal meteorological weather indicators to be selected
View tableView in ArticleTable 2. Seasonal meteorological weather indicators to be selected
天气变量 待选指标 平均气温/℃ 12月平均气温 1月平均气温 2月平均气温 12月—2月平均气温 3月—5月平均气温 平均最低气温/℃ 12月平均最低气温 1月平均最低气温 2月平均最低气温 12月—2月平均最低气温 降水量/mm 越冬前降水量 返青期降水量 拔节期降水量 抽穗扬花期降水量 灌浆期降水量 全生育期总降水量 太阳辐射/(kJ·m-2) 灌浆期太阳辐射 3月太阳辐射 4月太阳辐射 5月太阳辐射 3月—5月平均太阳辐射 饱和水汽压差/kPa 3月平均饱和水汽压差 4月平均饱和水汽压差 5月平均饱和水汽压差 3月—5月平均饱和水汽压差 有效活动积温/℃ 播种—越冬期积温 返青—成熟期积温 全生育期积温 越冬期负积温
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Xin-hua YU, Wei-qing ZHAO, Zai-chun ZHU, Bao-dong XU, Zhi-zhan ZHAO. Research in Crop Yield Estimation Models on Different Scales Based on Remote Sensing and Crop Growth Model[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2205
Paper Information
Category: Research Articles
Received: Jul. 9, 2020
Accepted: --
Published Online: Sep. 8, 2021
The Author Email: Xin-hua YU (yuxh1970@139.com)
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