| 2001—2020年藏东南苹果物候期变化特征分析 |
| |
| 引用本文： | 白宇轩,杜军,王挺,索朗旺堆.2001—2020年藏东南苹果物候期变化特征分析[J].中国农学通报,2022,38(20):89-96. |
| |
| 作者姓名： | 白宇轩 杜军 王挺 索朗旺堆 |
| |
| 作者单位： | 1.西藏自治区林芝市气象局,西藏林芝860000;2.西藏高原大气环境科学研究所,西藏拉萨 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,西藏林芝 860700 |
| |
| 基金项目： | 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);2020年西藏自治区科技重点研发计划“气候变化背景下西藏高原季节划分及农业气候资源时空变化特征研究”(XZ202001ZY0023N) |
| |
| 摘 要： | 开展气候变化对苹果物候期的影响研究,可为应对气候变化和指导当地苹果生产提供科学依据。利用2001—2020年林芝苹果物候期和逐日平均气温(Tm)、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,采用线性倾向估计法、Pearson相关系数和优势分析方法等,分析了苹果物候期及生长期长度的变化趋势,以及影响的主导气候因子。结果表明：2001—2020年藏东南苹果各物候期均呈推迟趋势,为2.11~10.20 d/10 a,以开花始期推迟的最多;春季物候期较秋季物候期推迟的明显。果实生长发育期和果树生长季分别以8.10、1.59 d/10 a的速率缩短,这与中国苹果主产地延长趋势不同。果树生长季内,只有Pr、RH、S呈下降趋势,其他气候要素趋于上升。其中,可采成熟期之前Tm、Tmax、Tmin、Pr趋于增加,之后呈下降趋势。影响物候期长度的主导气候因子,除叶变色末期—落叶末期是S外,其他物候期为∑T0。研究区3月上旬Tmax每升高1℃,开花始期提前3.29天;8月下旬Tm平均升高1℃,可采成熟期推迟3.15天。
|
| 关 键 词： | 苹果 物候期 气候变化 积温 影响因子 藏东南 |
| 收稿时间： | 2022-02-10 |
Phenological Change Characteristics of Malus pumila in Southeastern Tibet from 2001 to 2020 |
| |
| BAI Yuxuan,DU Jun,WANG Ting,SONAM Wangdoi.Phenological Change Characteristics of Malus pumila in Southeastern Tibet from 2001 to 2020[J].Chinese Agricultural Science Bulletin,2022,38(20):89-96. |
| |
| Authors: | BAI Yuxuan DU Jun WANG Ting SONAM Wangdoi |
| |
| Institution: | 1.Nyingchi Meteorological Service of Tibet, Nyingchi, Tibet 860000;2.Tibet Institute of Plateau Atmospheric and Environmental Science Research, Lhasa 850001;3.Field Science Experiment Base for Comprehensive Observation of Atmospheric Water Cycle in Mêdog County, CMA, Nyingchi, Tibet 860700 |
| |
| Abstract: | To analyze the impact of climate change on the Malus pumila phenophase in Nyingchi of southeastern Tibet Autonomous Region could provide a theoretical basis for coping with climate change and local apple production. Based on data of the daily mean temperature (Tm), maximum temperature (Tmax), minimum temperature (Tmin), precipitation (Pr), relative humidity (RH) and sunshine duration (S) in Nyingchi from 2001 to 2020, we adopted linear regression method, Pearson correlation coefficient and dominance analysis method to reveal the changing trend of phenophase and growing duration of Malus pumila, and the leading climatic factors. The results showed that the Malus pumila phenological periods were postponed at a rate of 2.11-10.20 d/10a in southeastern Tibet from 2001 to 2020, and the largest delay was found in the first flowering date. The phenological periods in spring were delayed significantly than those in autumn. The fruit growth and development period and the apple tree growing season were shortened by 8.10 and 1.59 d/10 a, respectively, which were different from the prolonging trend in the main apple producing areas in China. During apple tree growing season, Pr, RH and S decreased, while the other climatic factors increased. Tm, Tmax, Tmin and Pr showed an increasing trend before fruit maturing period, and then decreased. The leading factor affecting the length of Malus pumila phenophase was ∑T0 (accumulated temperature ≥0℃), except from the late leaf coloring period to the late leaf falling period, during which, the leading factor was S. On average, for every 1℃ increase of Tmax in early March, the first flowering date could be 3.29 days earlier, and for every 1℃ increase of Tm in late August, the fruit maturing period could be 3.15 days later. |
| |
| Keywords: | Malus pumila phenophase climatic change accumulated temperature influencing factor southeastern Tibet |
|
| 点击此处可从《中国农学通报》浏览原始摘要信息 |
| 点击此处可从《中国农学通报》下载免费的PDF全文 |
|
