| Effects of aspects on soil environment and plant growth on the Qinghai-Tibet Plateau北大核心CSCD |
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| 引用本文： | 兰爱玉,林战举,范星文,姚苗苗.Effects of aspects on soil environment and plant growth on the Qinghai-Tibet Plateau北大核心CSCD[J].冰川冻土,2023(1):42-53. |
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| 作者姓名： | 兰爱玉 林战举 范星文 姚苗苗 |
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| 作者单位： | 1. 中国科学院西北生态环境资源研究院冻土工程国家重点实验室;2. 中国科学院大学 |
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| 基金项目： | 国家自然科学基金面上项目“高海拔多年冻土区局地坡向效应及水热差异定量化研究”（41971089）； |
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| 摘 要： | The different aspects lead to great differences in the processes of water，heat，and energy balance，which further affect the soil environment and the growth of alpine plants. Based on an experimental study with eight aspects（abbreviated as octagonal platform）of Huashixia frozen soil observation base on the Qinghai-Tibet Plateau，the influence of aspects on soil environments and alpine vegetation growth was studied. The results showed that：（1）After 6 years，the soil temperature of each slope near the surface（10 cm and 30 cm depth）from high to low was as follows：south > southeast > southwest > west > east > northwest > northeast > north，that is，the relatively sunny slope（east，southeast，south and southwest）was higher than the relatively shady slope（west，northwest，north and northeast）. However，there was no significant difference in soil water con? tent between the sunny slope and the shady slope at the depth of 0~30 cm. （2）The growth trend of aboveground vegetation（including plant height，coverage and aboveground biomass）on sunny slope was better than that on shady slope. The growth trend of underground vegetation（including root depth and underground biomass）on sunny slope was worse than that on shady slope. （3）In the depth of 0~10 cm，the content of soil organic carbon and total nitrogen on sunny slope was higher than that on shady slope. However，the content of total phosphorus on sunny slope was lower than that on shady slope. There was no significant difference in total potassium and available nutrients among different slopes（P>0. 05）. In general，the effect of temperature on vegetation growth and nutrient distribution is significant in alpine regions，and these findings provides an important reference for vegetation restoration and energy balance research in different aspects. © 2023 The Author(s).
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| 关 键 词： | 青藏高原 坡向 土壤温湿度 高寒植被 土壤养分 |
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