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青藏高原地表土壤水变化、影响因子及未来预估
Variation, causes and future estimation of surface soil moisture on the Tibetan Plateau

查看参考文献41篇

范科科 1,2,3   张强 1,2,3 *   孙鹏 4   宋长青 1,2,3   朱秀迪 1,2,3   余慧倩 1,2,3   申泽西 1,2,3  
文摘 土壤水分是地表和大气连接的纽带,在水文循环中扮演着重要角色。青藏高原作为“第三极”和“亚洲水塔”,其土壤水分对周边地区的气候如亚洲季风的形成和维持产生重要影响,也深刻影响着亚洲水资源的可利用量。基于分布在青藏高原3个气候区的100个站点的实测土壤水数据,对ECV、ERA、MERRA、Noah数据集进行评价,选择对土壤水分评估效果最好的数据集,分析各种气象要素对土壤水分时空格局的影响,并预估未来100年内青藏高原土壤水变化,探讨可能气候成因。结果表明:①Noah数据集对青藏高原历史时期土壤水分评估效果最好,相对其他地区,各数据集对那曲地区土壤水分评估效果最优;②在各种气象因子中,降水是影响大部分地区土壤水分时空变化的最主要因子,但在喜马拉雅山脉地带,尤其山脉北坡,温度和太阳辐射有较高的影响;③1948-1970年土壤水分有明显的下降趋势,1970-1990年土壤水分呈波动变化,无明显趋势,1990-2005年土壤水分有一定的上升趋势,2005年后至今土壤水分有明显快速下降趋势:④不同未来情景,土壤水分有下降趋势,其中在CRP 8.5情景下,土壤水分下降最为明显,在2080年之后有更加显著的下降趋势;⑤未来降水和温度均呈上升趋势,其中干旱指数变化在RCP 8.5情景下呈下降趋势,在RCP 2.6和RCP 4.5情景下无明显变化,干旱指数在一定程度上能解释未来土壤水分的变化格局。
其他语种文摘 Soil moisture is the link between the land surface and the atmosphere, which plays an important role in the hydrological cycle. As the "Third Pole" and "Asian Water Tower",the Tibetan Plateau has an important influence on the climate of the surrounding areas such as the formation and maintenance of the Asian monsoon and it also profoundly affects the availability of Asian water resources. Based on the measured soil moisture data from 100 stations distributed in the three climate zones on the Tibetan Plateau, this paper assesses the ECV,ERA, MERRA and Noah datasets, selects the best evaluated dataset for surface soil moisture, and analyzes the influence of various meteorological factors on spatial and temporal patterns of soil moisture changes. Finally, the paper evaluates the changes of surface soil moisture during the next about 100 years and explores possible climate causes. The results show that: (1) The Noah dataset has the best assessment of surface soil moisture in the Qinghai-Tibet Plateau during the historical period. Among all the regions, Naqu obtains the best assessment of surface soil moisture in each dataset. (2) Among various meteorological factors, precipitation is the most important factor affecting the temporal and spatial patterns of soil moisture in most areas, but the temperature and solar radiation have a relatively high impact in the Himalayas, especially on the north slope of the mountains. (3) The surface soil moisture had a significant downward trend from 1948 to 1970. However, it did not fluctuate obviously from 1970 to 1990. From 1990 to 2005,there existed a certain upward trend. Conversely, it has a rapid downward trend since 2005. (4) There is a downward trend for surface soil moisture in different future scenarios. Compared with the RCP2.6 and RCP4.5 scenarios, the soil moisture declines obviously with a more significant downward trend after 2080 under the RCP8.5 scenerio. (5) In the future, both precipitation and temperature show an upward trend. There was a downward trend for the drought index in the RCP8.5 scenario, whereas, there is no significant change under the RCP2.6 and RCP4.5 scenarios. The drought index can explain the change of surface soil moisture in the future to a certain extent.
来源 地理学报 ,2019,74(3):520-533 【核心库】
DOI 10.11821/dlxb201903009
关键词 青藏高原 ; 土壤水 ; 干旱指数 ; 气候情景 ; 气候模式
地址

1. 北京师范大学, 环境演变与自然灾害教育部重点实验室, 北京, 100875  

2. 北京师范大学, 地表过程与资源生态国家重点实验室, 北京, 100875  

3. 北京师范大学地理科学学部,减灾与应急管理研究院, 北京, 100875  

4. 安徽师范大学地理与旅游学院, 芜湖, 241002

语种 中文
文献类型 研究性论文
ISSN 0375-5444
基金 国家自然科学基金创新研究群体项目 ;  国家自然科学基金国家杰出青年科学基金 ;  国家自然科学基金项目
文献收藏号 CSCD:6447513

参考文献 共 41 共3页

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引证文献 20 篇

1 王振波 青藏高原山水林田湖草生态保护修复模式——以拉萨河流域为例 生态学报,2019,39(23):8966-8974
被引 9 次

2 范科科 青藏高原土壤水分变化对近地面气温的影响 地理学报,2020,75(1):82-97
被引 4 次

显示所有20篇文献

论文科学数据集

1. 基于微波数据同化的中国土壤水分数据集（2002-2011）

2. 全球日尺度时空连续地表土壤水分数据集（2002-2020）

3. 帕里土壤温湿度观测网数据（2015-2021）

数据来源：
国家青藏高原科学数据中心

1. 2015-2019年全球0.25°土壤水分产品逐日数据集

2. 中国西南地区历年月度干旱指数（1951-2016）和8天频率土壤湿度（2007-2016）数据集

3. 2008-2012年俄罗斯伏尔加格勒州1千米 TVDI干旱指数

数据来源：
国家对地观测科学数据中心
PlumX Metrics
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