[1]郭焘,于红博,马梓策,等.基于MODIS的土壤含水量时空变化及干旱化程度分析[J].水土保持研究,2019,26(04):185-189.
　GUO Tao,YU Hongbo,MA Zice,et al.Analysis of Spatial and Temporal Variations of Soil Moisture Content and Drought Degree Based on MODIS[J].Research of Soil and Water Conservation,2019,26(04):185-189.
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基于MODIS的土壤含水量时空变化及干旱化程度分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 26 期数: 2019年04期 页码: 185-189 栏目: 出版日期: 2019-06-11
Title:
Analysis of Spatial and Temporal Variations of Soil Moisture Content and Drought Degree Based on MODIS
作者:
郭焘1, 于红博1,2, 马梓策1, 曹聪明1
1. 内蒙古师范大学 地理科学学院, 呼和浩特 010022;
2. 内蒙古师范大学 遥感与地理信息系统重点实验室, 呼和浩特 010022
Author(s):
GUO Tao1, YU Hongbo1,2, MA Zice1, CAO Congming1
1. College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, China;
2. Key Laboratory of Remote Sensing and Geography Information System, Inner Mongolia Normal University, Hohhot 010022, China
关键词:
MODIS; 土壤含水量; 遥感反演; 干旱
Keywords:
MODIS; soil water content; remote sensing inversion; drought
分类号:
S152.7
摘要:
以内蒙古锡林郭勒盟为研究区域，基于MODIS数据，反演得到锡林郭勒盟地表含水量指数（SWCI），结合野外实测数据对其进行了修正。选取了2000—2017年每年7月份，枯水年（2007年）、平水年（2015年）和丰水年（2012年）生长季4—9月的数据，结合气象资料对研究区土壤含水量的时空变化特征进行了分析，通过土壤含水量对锡林郭勒盟干旱化程度进行了定量分析。结果表明：（1）锡林郭勒盟土壤含水量空间分布自西南向东北呈条带状逐渐增加趋势，荒漠草原 < 典型草原 < 草甸草原。（2）锡林郭勒盟4—5月份的土壤含水量变化幅度不大，空间分布较均一；6—7月份的土壤含水量随着降水的增减而增减，呈现明显的由西向东增加的空间分布趋势；8月份，土壤含水量基本达到最低值；9月份土壤含水量有所回升。（3）锡林郭勒盟的土壤含水量与降水、水汽压和相对湿度呈正相关，与气温呈负相关。（4）锡林郭勒盟以中度干旱面积为主，重度干旱面积占比最小；其中，苏尼特右旗、二连浩特市、苏尼特左旗、阿巴嘎旗、镶黄旗长期处于中度干旱状态；东乌珠穆沁旗东部、西乌珠穆沁旗东部、多伦县多数情况无旱情发生。
Abstract:
Taking the Xilin Gol League of Inner Mongolia as the research area, based on the MODIS data, the surface water content index (SWCI) of the Xilin Gol League was obtained by inversion, which was corrected with the field measured data. The data of growing season from April to September of the dry year (2007), the normal year (2015) and the wet year (2012), July of 2000—2017 were selected, and the soil moisture content of the study area was combined with meteorological data. The temporal and spatial variation characteristics were analyzed, and the degree of aridification of the Xilin Gol League was quantitatively analyzed using soil water content. The results show that: (1) the spatial distribution of soil water content in Xilin Gol League gradually increasesed from southwest to northeast, and the soil moisture increased in the order: desert grassland < typical grassland < meadow grassland; (2) the soil water content of the Xilin Gol League in April and May did not changed much, and the spatial distribution was relatively uniform; the soil water content in June and July increased or decreased with the increase and decrease of precipitation, showing a significant increase trend from west to east; in August, soil water content basically reached the lowest value; soil moisture in September rebounded; (3) the soil water content of Xilin Gol League is positively correlated with precipitation, vapor pressure and relative humidity, and negatively correlated with temperature; (4) Xilin Gol League is dominated by moderate arid area, with the smallest proportion of severe arid area; among them, Sunite Right Banner, Erlianhot City, Sunite Zuoqi, Abaqi Banner and Inlaid Yellow Flag have been in a state of severe drought for a long time; in the eastern part of Dongwuzhumuqi Banner, the eastern part of Xiwuzhumuqi Banner and Duolun County, most cases did not suffer from drought.

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备注/Memo

收稿日期:2018-10-25;改回日期:2018-11-19。
基金项目:国家自然科学基金（41661009）；内蒙古自治区自然科学基金（2017MS0408）；内蒙古自治区高等学校科研项目（NJZY17047）
作者简介:郭焘(1977-),男,甘肃定西人,硕士研究生,研究方向为区域生态学。E-mail:569577241@qq.com
通讯作者:于红博(1977-),女(满族),内蒙古呼和浩特人,博士,副教授,主要从事生态建模与遥感图像处理研究。E-mail:yuboge2003@sohu.com

更新日期/Last Update: 1900-01-01