干旱气象 ›› 2020, Vol. 38 ›› Issue (2): 188-194.DOI: 10.11755/j.issn.1006-7639(2020)-02-0188

• 论文 • 上一篇    下一篇

基于CLDAS数据的甘蔗干旱监测评估标准对比——以2011年广西干旱为例

陈燕丽1,黄思琦2,莫建飞1,罗永明1,蒙良莉3,匡昭敏1   

  1. 1.广西壮族自治区气象科学研究所,广西生态气象和卫星遥感中心,广西 南宁 530022;
    2.南京信息工程大学地理与遥感学院,江苏 南京 210044;
    3.南宁师范大学地理科学与规划学院,广西 南宁 530001
  • 出版日期:2020-04-28 发布日期:2020-04-28
  • 通讯作者: 匡昭敏(1968— ),女,博士,正研级高级工程师,主要从事气象灾害监测评估研究. E-mail:kzhaomin@163.com。
  • 作者简介:陈燕丽(1982— ),女,高级工程师,主要从事生态气象与遥感应用研究. E-mail:cyl0505@sina.com。
  • 基金资助:
    2014年公益性行业专项重点项目(GYHY201406030)、广西科技基金项目(2018GXNSFAA281338)和干旱气象科学研究基金项目(IAM201707)共同资助

Comparison of Drought Monitoring Standards of Sugarcane Based on CLDAS Data: A Case of Drought in Guangxi in 2011

CHEN Yanli1, HUANG Siqi2, MO Jianfei1, LUO Yongming1, MENG Liangli3, KUANG Zhaomin1   

  1. 1. Guangxi Institute of Meteorological Sciences, Guangxi Ecological Meteorology and Satellite Remote Sensing Center, Nanning 530022, China;
    2. College of Geography and Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    3. College of Geography and Planning of Nanning Normal University, Nanning 530001, China
  • Online:2020-04-28 Published:2020-04-28

摘要: 利用2011年中国国家气象信息中心CLDAS反演的土壤体积含水量和联合国粮农组织和维也纳国际应用系统研究所联合建立的HWSD推算的田间持水量以及广西15个农业气象站土壤相对湿度逐旬观测资料,计算、检验了土壤相对湿度,并参照我国国家标准《甘蔗干旱灾害等级》和《农业干旱等级》,结合甘蔗灾情普查数据,对2011年广西甘蔗种植区夏秋干旱进行监测和评估,在此基础上调整CLDAS甘蔗干旱监测指标,实现干旱动态监测。结果表明:CLDAS反演的土壤相对湿度与农气站实测值一致性较好,相关系数在0.62~0.87之间,RMSE在7.9%~16.7%之间。基于《农业干旱等级》和《甘蔗干旱灾害等级》的蔗区干旱监测结果均低估了旱情,尤其是《农业干旱等级》,而调整后的CLDAS干旱监测指标可以较好地反映旱情及动态演变过程,与实际受灾面积的绝对误差百分率小于8%。

关键词: 干旱, 甘蔗, CLDAS土壤体积含水量, 广西

Abstract: Based on retrieved soil volumetric moisture content of CLDAS (land data assimilation system of China Meterological Administration), extracted field capacity of HWSD (harmonized world soil database) from FAO and Vienna International Apply System Institute and ten-daily soil relative moisture observation data at 15 agro-meterological stations of Guangxi, the soil relative humidity of CLDAS was calculated and tested. Combined with the statistics data of drought disaster, the drought in sugarcane planting area of Guangxi from summer to fall in 2011 was monitored and evaluated by using the agricultural drought grades and sugarcane drought levels classification standards. And on this basis, the sugarcane drought monitoring indicators of CLDAS were adjusted, and it was applied in the monitoring of drought. The results show that the retrieved soil relative humidity of CLDAS was better consistent with ground observation data from agro-meterological stations. The correlation coefficients were from 0.62 to 0.87, and RMSE was from 7.9% to 16.7%. The classification standards of agricultural drought grades and sugarcane drought levels underestimated the drought in 2011 in Guangxi, especially for agricultural drought grades, while the adjusted monitoring index of CLDAS could reflect the drought and its evolution process in sugarcane planting area well, and the percentage of absolute error with statistical drought disaster area was less than 8%.

Key words: drought, sugarcane, soil volumetric moisture content of CLDAS, Guangxi

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