A climate diagram atlas of Qingzang Plateau

doi:10.17521/cjpe.2021.0360

Abstract

Abstract:

Climate diagram can be used to reflect visually observation data of temperature and precipitation as well as information of weather stations. It is an effective tool for studying the relationship between vegetation and climate. This paper aims to provide the atlas of climate diagrams of the Qingzang Plateau, based on the 30-year averaged observational records of national surface weather stations during 1951-1980 and 1981-2010, respectively, in order to understand the plateau climate feature of every vegetation region and to further explore the vegetation- climate relationships on the plateau. The atlas of climate diagrams of 205 weather stations on the Qingzang Plateau for both the two 30-year periods were produced according to the standard of climate diagrams in Vegetation of China. Results showed that the temperature and precipitation of the Qingzang Plateau were overall low in the whole year but relatively higher in summer, and differed obviously among different vegetation regions. The mean annual temperature and annual precipitation showed an increasing trend from the first 30-year period of 1951-1980 to the later one of 1981-2010. Although the number of weather stations in the western plateau is very sparse, this climate diagram dataset covers every vegetation regions of the plateau surface. This atlas can be used effectively to study the relationships between vegetation and climate, and conveniently to display the climate environment of the plateau.

Key words: climate diagram, atlas, Qingzang Plateau, vegetation region, climate change

HU Xiao-Fei, WEI Lin-Feng, CHENG Qi, WU Xing-Qi, NI Jian. A climate diagram atlas of Qingzang Plateau[J]. Chin J Plant Ecol, 2022, 46(4): 484-492.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2021.0360

https://www.plant-ecology.com/EN/Y2022/V46/I4/484

Figures/Tables 4

Fig. 1 Spatial distribution of weather stations on the Qingzang Plateau. A, 1951-1980. B, 1981-2010. C, Vegetation regionalization map. D, Temporal change of the number of stations. III, warm-temperate deciduous broadleaf forest region; IIIii, southern warm-temperate deciduous Quercus forest zone; IV, subtropical broadleaf evergreen forest region; IVAi, northern subtropical broadleaf evergreen and deciduous forest zone; IVAii, middle subtropical broadleaf evergreen forest zone; IVBi, middle subtropical broadleaf evergreen forest zone; IVBiii, subtropical mountains cold-temperate needleleaf forest zone; V, tropical monsoon rain forest and rain forest region; VBi, northern tropical seasonal rain forest, semi-evergreen monsoon rain forest zone; VI, temperate steppe region; VIAii, southern temperate steppe zone; VII, temperate desert region; VIIBi, temperate semi-shrubby and shrubby desert zone; VIIBii, warm-temperate shrubby and semi-shrubby desert zone; VIII, Qingzang Plateau alpine vegetation region; VIIIAi, subalpine scrub and alpine meadow zone; VIIIAii, alpine meadow zone; VIIIBi, alpine steppe zone; VIIIBii, temperate steppe zone; VIIICi, alpine desert zone; VIIICii, temperate desert zone. Vegetation regionalization map was drew based on Vegetation Atlas of China (1:1 000 000) (The Editorial Committee of Vegetation Map of China, Chinese Academy of Sciences, 2001).

Table 1 Changes of temperature and precipitation on the Qingzang Plateau

气候指标 Climate variable	年 Years	平均数±标准差 Mean ± SD	最大值 Maximum	最小值 Minimum
年平均气温 Mean annual air temperature (℃)	1951-1980	3.0 ± 4.2	14.7	-5.6
年平均气温 Mean annual air temperature (℃)	1981-2010	5.3 ± 4.7	17.0	-5.0
年降水量 Mean annual precipitation (mm)	1951-1980	469.9 ± 235.2	1 667.6	17.6
年降水量 Mean annual precipitation (mm)	1981-2010	528.5 ± 250.9	1 778.5	15.5

Fig. 2 Differences of climatic variables in stations with the same location during 1951-1980 and 1981-2010.

Table 2 Characteristics of climate in different vegetation regions on the Qingzang Plateau

气候指标 Climate variable	年份 Years	植被区域 Vegetation region
气候指标 Climate variable	年份 Years	III	IV	V	VI	VII	VIII
T (℃)	1951-1980	3.2	7.0	3.7	4.2	1.6	0.4
T (℃)	1981-2010	4.1	8.9	8.0	6.2	3.3	1.3
T₁ (℃)	1951-1980	-9.0	-2.3	-4.7	-9.7	-12.7	-11.1
T₁ (℃)	1981-2010	-7.7	-0.3	0.8	-7.0	-10.5	-10.0
T₇ (℃)	1951-1980	13.7	15.0	11.2	15.6	14.2	10.6
T₇ (℃)	1981-2010	14.3	16.8	14.9	17.4	15.8	11.4
T_max (℃)	1951-1980	32.0	36.7	31.9	35.1	35.5	32.0
T_max (℃)	1981-2010	35.0	39.0	32.6	40.3	36.4	33.7
T_min (℃)	1951-1980	-28.5	-33.7	-33.2	-34.1	-39.6	-48.1
T_min (℃)	1981-2010	-27.9	-30.6	-19.1	-31.9	-32.0	-45.2
P (mm)	1951-1980	487.1	701.3	550.3	407.8	202.0	435.2
P (mm)	1981-2010	503.5	677.9	723.3	388.0	169.5	452.6
N_tmin< 0	1951-1980	5.3	5.2	6.0	6.3	7.4	8.0
N_tmin< 0	1981-2010	6.2	4.2	4.0	5.5	6.9	7.7

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