Study on Agricultural Drought Comprehensive Monitoring in Hainan #br#
Island Based on MODIS Data and Meteorological Data

LI Hailiang; DAI Shengpei; HU Shenghong; TIAN Guanghui; LUO Hongxia

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Study on Agricultural Drought Comprehensive Monitoring in Hainan #br# Island Based on MODIS Data and Meteorological Data

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- Study on Agricultural Drought Comprehensive Monitoring in Hainan #br# Island Based on MODIS Data and Meteorological Data
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 51, Issue 6, (2012)
- 作者机构：
  
  1. 中国热带农业科学院科技信息研究所/海南省热带作物信息技术应用研究重点实验室,海南,儋州,571737
  2. 中国热带农业科学院环境与植物保护研究所,海南,儋州,571737
  3. 海南省气象科学研究所,海南,海口,570203
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012，
  
  Published Online：25 November 2012，
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LI Hailiang, DAI Shengpei, HU Shenghong, et al. Study on Agricultural Drought Comprehensive Monitoring in Hainan #br# Island Based on MODIS Data and Meteorological Data. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 51(6).(2012)
DOI：

LI Hailiang, DAI Shengpei, HU Shenghong, et al. Study on Agricultural Drought Comprehensive Monitoring in Hainan #br# Island Based on MODIS Data and Meteorological Data. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 51(6).(2012) DOI：

摘要

采用遥感信息与地面气象观测数据相结合的方法进行农业干旱监测研究。选择适合高植被覆盖区旱情监测的标准化植被供水指数及适合热带气候区旱情监测的综合降水距平指数作为参数，通过与同步实测土壤含水量的数据融合构建农业干旱综合指数模型。用检验样点的实测数据对模型进行精度验证与实用性评价，检验结果显示均方根误差RMSE为4.65%，相对均方根误差RMSE

为19.28%，说明该模型具有较高的精度，可以用来监测海南岛的农业干旱。利用模型对海南岛2004年10月至2005年1月旱情进行监测与分析。结果表明海南岛旱情西部重于东部、北部重于南部、四周平原重于中部山区。2004年10月上旬起旱情持续加重，12月上旬达到旱情高峰，12月中旬旱情略有缓解，但直至监测末期2005年1月下旬旱情依然严重。旱情随着海拔、坡度减小而加重的趋势明显；平地旱情比坡地重，旱情随坡向的分异不是很明显。

Abstract

In this paper

the agricultural drought was monitored based on the MODIS data and meteorological data. The agricultural drought index model was established by the standardization vegetation supply water index (SDI)

comprehensive precipitation departure index (MSRI) and soil moisture data measured simultaneously.The SDI is suitable for drought monitoring in high vegetation cover region

and the MSRI is suitable for drought monitoring in tropical climate area. The model accuracy was evaluated by the measured data in May 2011 in Hainan Island. The results show that root mean square(RMSE) of the model is 4.65% and the relative root mean square(RESE

) is 19.28%

indicating that the model has higher accuracy and can be used to monitor agricultural drought in Hainan Island. The model was used to monitor agricultural drought in Hainan Island from October in 2004 to January in 2005. Based on the results of agricultural drought monitoring

temporal attribute and spatial distributions of droughts in the study area were briefly discussed. The drought occurrences had some little fluctuations

but with a developing trend.The drought in west and north is more serious than in east and south of the island.As a whole

the drought is more serious in the plain than that in the mountain area of the central section of Hainan during the monitoring period

with an obvious temporal change trend. The drought was aggravated with the elevation and slope decrease.The drought in the plain is more serious than in the slope land and the aspect differentiation of drought is not obvious.

关键词

MODIS农业干旱旱情指数综合监测海南岛

Keywords

MODISagricultural droughtdrought indexcomprehensive monitoringHainan Island

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Related Institution

Institute of Scientific and Technical Information, Chinese Academy of Tropical Agricultural Sciences ∥Key Laboratory of Practical Research on Tropical Crops Information Technology in Hainan



Department of Science and Technology, Chinese Academy of Tropical Agricultural Sciences, Haikou

School of Earth Sciences and Geological Engineering ∥Guangdong Provincial Key Lab of Geological Processes and Mineral Resource, Sun Yat-sen University

Institute of Geographical Science and Tourism∥Laboratory of Information Integration and Eco-Security∥Xinjiang Key Laboratory Lake Environment and Resources in Arid Zone，Xinjiang Normal University

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