哀牢山亚热带常绿阔叶林土壤温度时空分布对模拟增温的响应

生态学杂志

哀牢山亚热带常绿阔叶林土壤温度时空分布对模拟增温的响应

张一平^1,2**,武传胜^2,4,梁乃申³,沙丽清^1,2,罗鑫²,刘玉洪^1,2

（¹中国科学院热带森林生态学重点实验室，昆明 650223; ²中国科学院哀牢山亚热带森林生态系统研究站，云南景东 676209; ³日本国立环境研究所，日本筑波3058506; ⁴中国科学院大学，北京 100049）

出版日期:2015-02-07 发布日期:2015-02-07

The response of soil temperature to experimental warming in a subtropical evergreen broad-leaved forest in Ailao Mountains, Yunnan, SW China.

ZHANG Yi-ping^1,2**, WU Chuan-sheng^2,4, LIANG Nai-shen³, SHA Li-qing^1,2, LUO Xin², LIU Yu-hong^1,2

(¹Key Laboratory of Tropical Forest Ecology （Xishuangbanna Tropical Botanical Garden）, Chinese Academy of Sciences, Kunming 650223, China; ²Ailaoshan Station for Subtropical Forest Ecosystem Studies, Jingdong 676209, Yunnan, China; ³National Institute for Environmental Studies, Tsukuba 3058506, Japan; ⁴University of Chinese Academy of Sciences, Beijing 100049, China)

Online:2015-02-07 Published:2015-02-07

摘要/Abstract

摘要：

为把握森林不同深度的土壤温度对区域气候变暖的响应，评估气候变暖对亚热带森林土壤呼吸的影响，利用在哀牢山亚热带常绿阔叶林中设置的土壤增温和土壤呼吸人工控制实验，对2011—2013年的对照样地和增温样地不同深度的土壤温度实测数据进行了分析，结果表明：区域气候变暖导致的温度升高不改变土壤温度的年变化和日变化特征；干季的增温效应大于雨季；同一深度增温效应具有一定的年变化，但日变化不明显；增温效应在土壤表层较大，1—4月明显，2月最高，增温可达3 ℃；5 cm深度的平均增温效应在2 ℃左右，且年变化较小；随着深度的增加，增温效应呈现对数降低趋势；如果以0.5 ℃为增温效应的阈值，推算可得出：干季的影响深度为3.82 m，雨季可达12.04 m，年均为6.58 m。

关键词: 生态保护, 选择实验, 支付意愿, 随机效用理论, 条件价值评估法

Abstract:

To improve our understanding of responses of soil temperature to global warming in forests, we conducted a soil warming experiment in a subtropical evergreen broadleaved forest in Ailao Mountains, Yunnan, SW China. Based on measurements from 2011 to 2013, we examined warming effects on seasonal and diurnal patterns of soil temperature. The results showed that warming effects in dry season were greater than in rainy season, showing seasonal variations, but not diurnal variations. Soilsurface temperatures increased between January and April, with a 3 ℃ maximum in February. Warming increased soil temperature by 2 ℃ at the soil depth of 5 cm. The warming effect decreased exponentially with soil depth. Based on a 0.5 ℃ temperature increase, soil warming could reach the depth of 3.82 m in the dry season, 12.04 m in the rainy season, with an annual mean of 6.58 m.

Key words: ecological protection, random utility theory, choice experiment, contingent valuation method, willingness to pay

张一平1,2**,武传胜2,4,梁乃申3,沙丽清1,2,罗鑫2,刘玉洪1,2. 哀牢山亚热带常绿阔叶林土壤温度时空分布对模拟增温的响应[J]. 生态学杂志.

ZHANG Yi-ping1,2**, WU Chuan-sheng2,4, LIANG Nai-shen3, SHA Li-qing1,2, LUO Xin2, LIU Yu-hong1,2. The response of soil temperature to experimental warming in a subtropical evergreen broad-leaved forest in Ailao Mountains, Yunnan, SW China.[J]. cje.

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