[1]张巧凤,刘桂香,于红博,等.锡林郭勒草原蒸散发月季动态及相关因子分析[J].水土保持研究,2017,24(03):164-169.
　ZHANG Qiaofeng,LIU Guixiang,YU Hongbo,et al.Monthly and Seasonal Dynamics of ET in Xilingol Steppe and Related Factors Analysis[J].Research of Soil and Water Conservation,2017,24(03):164-169.
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锡林郭勒草原蒸散发月季动态及相关因子分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年03期 页码: 164-169 栏目: 出版日期: 2017-06-28
Title:
Monthly and Seasonal Dynamics of ET in Xilingol Steppe and Related Factors Analysis
作者:
张巧凤1,2,3,4, 刘桂香2, 于红博1,3, 玉山1,3, 包玉海1,3
1. 内蒙古师范大学 地理科学学院, 呼和浩特 010022;
2. 中国农业科学院草原研究所, 呼和浩特 010010;
3. 内蒙古自治区 遥感与地理信息系统重点实验室, 呼和浩特 010022;
4. 内蒙古防灾减灾与生态安全监测实验室, 呼和浩特 010022
Author(s):
ZHANG Qiaofeng1,2,3,4, LIU Guixiang2, YU Hongbo1,3, YU Shan1,3, BAO Yuhai1,3
1. College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, China;
2. Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot 010010, China;
3. Inner Mongolia Key Laboratory of Remote Sensing and Geography Information System, Hohhot 010022, China;
4. Inner Mongolia Laboratory of Disaster Prevention and Reduction and Ecological Safety Monitoring, Hohhot 010022, China
关键词:
锡林郭勒草原; 蒸散发; 植被指数; 气象要素; 相关分析
Keywords:
Xilingol grassland; ET; NDVI; meteorological factors; correlation analysis
分类号:
S812
摘要:
蒸散发（Evapotranspiration，ET）的时空动态对理解水热对植被的影响具有重要作用。利用MODIS MOD16 A2和MOD13 A3月产品数据及气象数据，通过回归分析和相关分析等方法，研究了锡林郭勒草原不同类型草地近15年（2000—2014年）的ET月季动态及相关因子。结果表明：3—10月的ET均表现出草甸草原 > 典型草原和沙地植被 > 荒漠草原，1—2月和11—12月的ET均表现出草甸草原 < 典型草原和沙地植被 < 荒漠草原。荒漠草原11月ET最大，其余各类草原均在7月达到最大值；各类草原的最小ET均为5月。各类草原3—5月和10月的ET均为下降趋势，而1月、6月、7月和12月的ET均为上升趋势。春季、夏季和秋季的ET均表现出草甸草原 > 典型草原和沙地植被 > 荒漠草原，而冬季的ET表现出草甸草原 < 典型草原和沙地植被 < 荒漠草原。荒漠草原冬季ET最大，其余各类草原的ET均在夏季达到最大值。各类草原春季和秋季的ET均为下降趋势，而夏季和冬季的ET均为上升趋势。Pearson相关分析表明3—10月及春季、夏季和秋季的ET与NDVI和降水量显著正相关，与平均气温显著负相关（p < 0.05）；相反，1—2月、11—12月及冬季的ET与降水量负相关，而与平均气温显著正相关（p < 0.05）。
Abstract:
Spatiotemporal dynamic of evapotranspiration (ET) plays an important role in understanding the impact of water and heat on vegetation. In the present study, MODIS MOD16A2 and MOD13A3 monthly data and meteorological data were employed to analyze the spatiotemporal dynamics of monthly and seasonal ET in different types of grasslands in recent 15 years (from 2000 to 2014) in Xilingol steppe and the correlation between ET and related factors by means of regression analysis and correlation analysis. The results showed that ET decreased from east to west in Xilingol steppe and in the sequence: meadow steppe > typical steppe and sandy vegetation > desert steppe from March to October. In contrast, ET increased from east to west in Xilingol steppe and in the order: meadow steppe < typical steppe and sandy vegetation < desert steppe in January, February, November and December. The max ET appeared in November in desert steppe, but it reached the maximum value in July in other types of grasslands. The min ET all appeared in May in different types of grasslands. In all types of grasslands, ET had the decreasing trend from March to May, and October, but in January, June, July and December, it had the increasing trend, but all the changes were not significant. In spring, summer and autumn, ET decreased from east to west with meadow steppe > typical steppe and sandy vegetation > desert steppe. In contrast, ET increased from east to west with meadow steppe < typical steppe and sandy vegetation < desert steppe in winter. The max ET appeared in winter in desert steppe, but it reached the maximum value in summer in other types of grasslands. In all types of grasslands, ET had the decreasing trend in spring and autumn, but in summer and winter, it had the increasing trend, but all the changes were not significant. Pearson correlation analysis indicated that there was significant positive correlation (p<0.05) between ET and NDVI and precipitation from March to October and in spring, summer and autumn. On the contrary, in January, February, November, December and in winter, there was no significant negative correlation between ET and precipitation, but significant positive correlation (p<0.05) between ET and mean temperature appeared.

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备注/Memo

收稿日期:2016-10-01;改回日期:2016-10-18。
基金项目:中国农业科学院创新工程“草原非生物灾害防灾减灾团队”（CAAS-ASTIP-IGR2015-04）；国家科技支撑计划子课题（2013BAK05B01）；国家自然科学基金（71263033）；内蒙古科技计划项目“阿尔山森林灾害监测预警与应急管理系统研究”
作者简介:张巧凤(1978-),女,内蒙古土左旗人,讲师,博士,主要从事3S应用和草原生态环境监测与风险评估研究。E-mail:zqf2099@163.com
通讯作者:刘桂香(1962-),女,内蒙古乌兰察布人,研究员,博士,主要从事草原生态环境监测评价和草原非生物灾害监测评估研究。E-mail:liugx804@163.com

更新日期/Last Update: 1900-01-01