| 三江源地区草地植物功能性状与蒸散发关系研究 |
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| 引用本文： | 霍莉莉,陈懂懂,李奇,张莉,贺福全,舒敏,赵亮.三江源地区草地植物功能性状与蒸散发关系研究[J].草地学报,2022,30(8):2182-2190. |
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| 作者姓名： | 霍莉莉 陈懂懂 李奇 张莉 贺福全 舒敏 赵亮 |
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| 作者单位： | 1. 中国科学院西北高原生物研究所, 青海 西宁 810008;2. 中国科学院三江源国家公园研究院, 青海 西宁 810008;3. 中国科学院大学, 北京 10049 |
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| 基金项目： | 青海省基础研究项目（2021-ZJ-761）；第二次青藏高原综合科学考察研究项目（2019QZKK040104）资助 |
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| 摘 要： | 蒸散发作为调控区域水分收支的重要支出项，受植物性状的影响。本研究于2021年5月—2021年9月对三江源及其周边共5个区域(海晏(HY)、同德(TD)、玛多(MD)、曲麻莱(QML)、可可西里(KKXL))的实际蒸散发及植被数据进行收集，通过相关性分析解释植被变化过程对环境的适应策略。结果表明：三江源草地植物多以丛生或密丛生为主，其中比叶面积与株高、叶片干物质含量、生长型和种子类型间呈显著负相关(P<0.05)。生长季实际蒸散发日、月动态在5个区域均呈现单峰变化趋势，生长季累积量为HY(309.97 mm)>TD(279.58 mm)>QML(247.90 mm)>MD(239.42 mm)>KKXL(230.35 mm)。分析植物功能性状与实际蒸散发之间的相关性，表明株高、比叶面积、叶片干物质含量、生长型和种子类型均与实际蒸散发呈现一定相关性，其中生长型相关性最大(R2=0.74)。
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| 关 键 词： | 植物功能性状 蒸散发 草地类型 三江源 |
| 收稿时间： | 2022-02-21 |
Study on the Relationship between Functional Traits of Grassland Plants and Evapotranspiration in the Sanjiangyuan |
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| HUO Li-li,CHEN Dong-dong,LI Qi,ZHANG Li,HE Fu-quan,SHU Min,ZHAO Liang.Study on the Relationship between Functional Traits of Grassland Plants and Evapotranspiration in the Sanjiangyuan[J].Acta Agrestia Sinica,2022,30(8):2182-2190. |
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| Authors: | HUO Li-li CHEN Dong-dong LI Qi ZHANG Li HE Fu-quan SHU Min ZHAO Liang |
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| Institution: | 1. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;2. Institute of Sanjiangyuan National Park, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;3. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Evapotranspiration is a key expenditure item in regulating the regional water budget and can affect the growth and traits of plants. Here,from May 2021 to September 2021,a total of 5 research sites in Sanjiangyuan and its surrounding areas (Haiyan (HY),Tongde (TD),Maduo (MD),Qumalai (QML),Hoh Xil (KKXL)),were investigated on the vegetation traits to explain the adaptation strategies of plants to the environment. The results showed that:the plants in Sanjiangyuan are mostly clustered or densely clustered,and there was a significant negative correlation between specific leaf area and plant height,leaf dry matter content,growth type and fruit (P<0.05). The actual daily and monthly dynamics of evapotranspiration showed a single-peak trend in the 5 research sites during the growing season,the accumulation in the growing season were HY (309.97 mm)>TD (279.58 mm)>QML (247.90 mm)>MD (239.42 mm)>KKXL (230.35 mm). The correlation between plant functional traits and actual evapotranspiration was analyzed,and the results showed that plant height,specific leaf area,leaf dry matter content,growth form and fruit all had a certain correlation with actual evapotranspiration,among them the growth form had the greatest correlation (R2=0.74). |
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| Keywords: | Plant functional traits Evapotranspiration Grassland type Sanjiangyuan |
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