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中国农学通报

中国农学通报 ›› 2023, Vol. 39 ›› Issue (34): 130-135.doi: 10.11924/j.issn.1000-6850.casb2022-0930

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

2002—2021年西藏中西部车前物候对气象条件驱动的响应

次旺1(), 杜军2,3(), 晋美朗杰4, 王挺3, 扎西旺拉3   

  1. 1 西藏自治区气候中心，拉萨 850001
    2 西藏高原大气环境科学研究所/西藏高原大气环境研究开放实验室，拉萨 850001
    3 中国气象局墨脱大气水分循环综合观测野外科学试验基地，西藏墨脱 860700
    4 拉萨市气象局，拉萨 850001
  • 收稿日期:2022-11-06 修回日期:2023-04-19 出版日期:2023-12-05 发布日期:2023-11-30
  • 通讯作者:
    杜军，男，1969年出生，贵州绥阳人，高级工程师，本科，主要从事高原气候与气候变化、生态与农业气候研究。通信地址：850001 西藏自治区拉萨市林廓北路2号 西藏高原大气环境科学研究所，Tel：0891-6322565，E-mail：。
  • 作者简介:

    次旺，男，1990年出生，西藏萨迦人，工程师，本科，主要从事高原气候诊断分析与研究。通信地址：850001 西藏自治区拉萨市林廓北路2号，Tel：0891-6364608，E-mail：。

  • 基金资助:
    第二次青藏高原综合科学考察研究项目“西风-季风协同作用及其环境效应”(2019QZKK0106); 中国气象科学研究院青藏高原与极地气象科学研究所开放课题“高原气候变化和农业与生态气象研究”(ITPP2021K03); 西藏科技创新基地自主研究项目“高分辨率卫星遥感数据在西藏地表参数监测中的应用研究”(XZ2021JR0001G)

Response of Plantago asiatica Phenology to Meteorological Conditions in West-central Tibet from 2002 to 2021

TGEWANG1(), DU Jun2,3(), JIGME Namgyal4, WANG Ting3, TASHI Wanglha3   

  1. 1 Tibet Climate Centre, Lhasa 850001
    2 Tibet Institute of Plateau Atmospheric and Environmental Science Research/Tibet Open laboratory of Plateau Atmospheric and Environmental Research, Lhasa 850001
    3 Field Science Experiment Base for Comprehensive Observation of Atmospheric Water Cycle in Motuo County, China Meteorological Administration, Motuo, Tibet 860700
    4 Lhasa Meteorological Bureau, Lhasa 850001
  • Received:2022-11-06 Revised:2023-04-19 Published-:2023-12-05 Online:2023-11-30

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摘要：

探讨日喀则车前物候变化及其与气象条件的关系，旨在为气候变暖背景下西藏植被物候变化的研究提供支撑。基于2002—2021年西藏中西部日喀则站车前物候期和逐月平均气温、最高气温(Tmax)、最低气温(Tmin)、相对湿度(RH)、降水量(Pr)和日照时数(S)等资料，采用线性回归、Pearson相关系数和偏最小二乘法(PLS)回归等方法对车前物候期变化及与气象因子的关系进行研究。结果表明：（1）2002—2021年西藏中西部车前各物候期均呈显著推迟趋势，平均每10年推迟8.96~38.63 d，以种子全熟期推迟的最为明显；生长季长度呈弱的延长趋势(1.03 d/10 a)。（2）西藏中西部1月Tmin降低、3月S和11月RH减少，以及11月Tmax显著升高，是车前物候期显著推迟的主要原因。车前展叶始期和黄枯普期对气温的响应速率分别为3.41、4.37 d/℃。

关键词: 车前, 物候期, 变化, 气象条件, 西藏中西部

Abstract:

The phenology changes of Plantago asiatica (PA) and their relationship with meteorological conditions were investigated in Shigatse, aiming to provide support for the study on the vegetation phenological changes in Tibet under the background of climate warming. Based on the data of PA’s phenology and monthly mean temperature, maximum temperature (Tmax), minimum temperature (Tmin), relative humidity (RH), precipitation (Pr) and sunshine duration (S) in Shigatse of west-central Tibet from 2002 to 2021, the change of PA’s phenophase and its relationship with meteorological factors in Shigatse were studied by the methods of linear regression, Pearson correlation coefficient and partial least regression (PLS). The main results showed that: (1) the phenophases of PA had been significantly delayed in west-central Tibet from 2002 to 2021, with rates ranging from 8.96 to 38.63 days per decade, among which the changing rate of seed full maturity date was the most obvious with the highest value. In contrast, the length of growth season had prolonged slowly at a rate of 1.03 days per decade. (2) The significant delay in the phenology of PA in west-central Tibet could be mainly attributed to the decrease of Tmin in January, the reducing of S in March and RH in November, and the significant increase of Tmax in November. The response rates to temperature were 3.41 and 4.37 d/℃ in the first leaf expansion date and common leaf withering date of PA, respectively.

Key words: Plantago asiatica, phenophase, change, meteorological conditions, west-central Tibet