干旱区生态环境知识资源中心(Arid): 基于MOD16的锡林郭勒草原14年蒸散发时空分布特征

Arid

	基于MOD16的锡林郭勒草原14年蒸散发时空分布特征
其他题名	14 Years Spatial-temporal Distribution Characteristics of Evapotranspiration in Xilingol Grassland Based on MOD16
	佟斯琴; 张继权; 哈斯; 马齐云
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2016
卷号	38 期号:4 页码:83-91
中文摘要	基于MODIS全球陆地蒸散发产品(MOD16),对锡林郭勒草原近14年蒸散发的年际和年内时空变化规律进行分析,同时探究不同类型草原蒸散发的变化特征。结果表明:(1)2000~2013年研究区蒸散发有波动中缓慢上升的趋势,在175.2~234.5mm间波动,多年年均值达204mm。月蒸散量高值集中在水分充足、气温较高、植被生长旺盛的6~8月份,在7月份达到最大值。(2)锡林郭勒草原多年平均蒸散发的空间格局由东北向西南逐渐减少,植被覆盖度高的区域蒸散量大,近14年来蒸散发的变化有增加趋势的面积大于呈减少趋势的面积,其中呈显著增加的像元主要位于东乌珠穆沁旗北部;减少的地区主要分布在二连浩特、苏尼特右旗及苏尼特左旗西部等。(3)不同草原类型蒸散发量由草甸草原向草原化荒漠、典型草原和荒漠草原逐渐减少。(4)在年际尺度上,在锡林郭勒地区降水是影响蒸散量的更为重要的因素。
英文摘要	Based on the MODIS ET products (MOD16), the spatiotemporal distribution and variability of evapotranspiration (ET) in Xilingol grassland were studied from 2000 to 2013. The results showed that the mean annual evapotranspiration of Xilingol grassland increased slowly in the fluctuations with values ranging from 175.2 mm/a to 234.5 mm/a, and with an average value of 204mm/a. High value of monthly evapotranspiration concentrated in June, July and August, in which moisture was sufficient, temperature was high and vegetation growth was exuberant. Furthermore, the maximum value appeared in July. The spatial distribution of the mean annual evapotranspiration reduced gradually from northeast to southeast, the higher the vegetation coverage areas, the higher the evapotranspiration. The pixels with significantly increased evapotranspiration mainly distributed in the north of East Ujimqin, the pixels with decreased evapotranspiration distributed in Erenhot, Sonid Youqi and the west of the Sonid Zuoqi. The evapotranspiration of different grassland types was gradually reduced from meadow steppe, steppe desert, typical steppe to desert steppe. In addition,the ET value of steppe desert was higher than typical desert may be because of the ecological restoration project or artificial planting. Compared with temperature, precipitation was the more important factor affecting Xilingol steppe terrestrial evapotranspiration.
中文关键词	蒸散发 ; 时空分布 ; 锡林郭勒草原
英文关键词	MOD16 MOD16 Evapotranspiration Spatial-temporal distributions Xilingol grassland
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5776709
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235326
作者单位	东北师范大学环境学院/自然灾害研究所, 长春, 吉林 130117, 中国
推荐引用方式 GB/T 7714	佟斯琴,张继权,哈斯,等. 基于MOD16的锡林郭勒草原14年蒸散发时空分布特征[J],2016,38(4):83-91.
APA	佟斯琴,张继权,哈斯,&马齐云.(2016).基于MOD16的锡林郭勒草原14年蒸散发时空分布特征.中国草地学报,38(4),83-91.
MLA	佟斯琴,et al."基于MOD16的锡林郭勒草原14年蒸散发时空分布特征".中国草地学报 38.4(2016):83-91.