Tree temperature shift and regulation of various landscape tree species under high-temperature stress: A case study in Shanghai Chenshan Botanical Garden

doi:10.3969/j.issn.1000-5641.2025.06.010

Abstract

Abstract:

We have investigated the correlations between tree temperature and leaf physiological variables (net photosynthetic rate, respiration rate, and stomatal conductance) and functional traits (leaf area, leaf thickness, specific leaf weight and specific leaf area) by measuring tree temperatures using infrared thermal imager in Shanghai Chenshan Botanical Garden taking 37 tree species as sample. In general, the average temperature difference between the crown and the air is 0.6℃, while the average temperature difference between the trunk and the air is 2.1℃. Under high temperature stress, the temperature regulation mechanisms of different landscape tree species have significant differences. According to the regulation shifts of the tree temperature in response to high-temperature stress, tree species can be divided into 3 types, i.e., rising type, maintenance type, and descending type. Tree species with larger single-leaf areas, specific leaf areas, and thinner leaf thickness have relatively lower crown temperatures and higher physiological levels of leaves, resulting in relatively better cooling effects. This can be used as a reference for selecting suitable tree species for regulating microclimate.

Key words: landscape tree species, high temperature stress, tree temperature, crown temperature, microclimate regulation

CLC Number:

TU986

Ming LIU, Zhiyuan WANG, Kankan SHANG. Tree temperature shift and regulation of various landscape tree species under high-temperature stress: A case study in Shanghai Chenshan Botanical Garden[J]. J* E* C* N* U* N* S*, 2025, 2025(6): 82-93.

Figures/Tables 9

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编号	种名	拉丁名	平均树高/m	平均胸径/cm	平均冠高/m	平均冠幅/m
1	三角槭	Acer buergerianum	8.6	25.2	7.6	10.0
2	樟叶槭	Acer coriaceifolium	6.5	21.0	3.5	7.4
3	梣叶槭	Acer negundo	5.2	23.6	3.3	10.5
4	五角枫	Acer pictum subsp. mono	5.2	24.8	2.2	7.9
5	七叶树	Aesculus chinensis	6.2	15.9	8.2	6.5
6	重阳木	Bischofia polycarpa	7.3	27.4	7.0	8.7
7	构树	Broussonetia papyrifera	6.0	22.0	4.0	10.6
8	美国山核桃	Carya illinoinensis	10.8	33.1	9.8	12.4
9	朴树	Celtis sinensis	5.8	26.1	5.6	9.6
10	南酸枣	Choerospondias axillaris	7.3	28.7	4.4	9.0
11	樟	Camphora officinarum	7.3	34.4	5.6	13.7
12	天竺桂	Cinnamomum japonicum	5.7	21.0	3.7	6.6
13	香橼	Citrus medica	4.5	20.7	3.5	6.6
14	光皮梾木	Cornus wilsoniana	6.1	19.1	3.1	8.4
15	梧桐	Firmiana simplex	7.8	25.5	6.5	8.5
16	银杏	Ginkgo biloba	7.6	24.5	9.3	7.5
17	毛叶山桐子	Idesia polycarpa var. vestita	5.9	14.0	2.9	6.3
18	冬青	Ilex chinensis	5.1	18.5	3.1	6.5
19	黄山栾树	Koelreuteria bipinnata 'integrifoliola'	6.1	23.6	6.4	9.1
20	紫薇	Lagerstroemia indica	4.1	15.6	6.5	6.7
21	鹅掌楸	Liriodendron chinense	6.6	26.1	2.7	8.6
22	荷花玉兰	Magnolia grandiflora	5.3	18.2	7.2	6.4
23	乐昌含笑	Michelia chapensis	6.1	21.3	6.6	7.7
24	黄心夜合	Michelia martini	5.6	12.7	4.6	3.0
25	花榈木	Ormosia henryi	6.6	21.3	5.4	6.9
26	红豆树	Ormosia hosiei	6.8	21.3	3.8	8.4
27	木樨	Osmanthus fragrans	3.8	19.4	6.2	6.1
28	黄连木	Pistacia chinensis	6.3	25.8	3.3	10.0
29	二球悬铃木	Platanus acerifolia	7.3	29.6	18.7	11.4
30	枫杨	Pterocarya stenoptera	8.1	39.5	11.8	16.8
31	白栎	Quercus fabri	5.7	16.6	7.8	6.8
32	弗吉尼亚栎	Quercus virginiana	7.6	26.1	5.6	7.1
33	刺槐	Robinia pseudoacacia	5.8	21.0	7.8	9.3
34	无患子	Sapindus saponaria	7.0	19.1	3.3	7.8
35	乌桕	Triadica sebifera	5.4	23.9	6.5	6.7
36	玉兰	Yulania denudata	4.6	17.5	3.6	5.6
37	榉树	Zelkova serrata	8.3	35.4	6.5	11.8