喀斯特退化天坑阴坡阳坡壳斗科植物的功能性状特征

doi:10.13287/j.1001-9332.202107.021

应用生态学报 ›› 2021, Vol. 32 ›› Issue (7): 2301-2308.doi: 10.13287/j.1001-9332.202107.021

喀斯特退化天坑阴坡阳坡壳斗科植物的功能性状特征

冯洁¹, 江聪², 税伟^1*, 朱粟锋³, 郭平平¹, 孙祥¹, 张永永¹, 刘橼锰¹

¹福州大学环境与资源学院, 福州 350116;
²北京大学城市与环境学院, 北京 100871;
³中国环境科学研究院, 北京 100012

收稿日期:2020-12-23 修回日期:2021-03-08 出版日期:2021-07-15 发布日期:2022-01-15
通讯作者: *shuiweiman@163.com
作者简介:冯洁,男,1994年生,硕士研究生。主要从事区域与流域环境规划和安全管理。E-mail:18437925268@163.com
基金资助:
国家自然科学基金项目(41871198)

Functional traits of Fagaceae plants in shady and sunny slopes in karst degraded tiankeng

FENG Jie¹, JIANG Cong², SHUI Wei^1*, ZHU Su-feng³, GUO Ping-ping¹, SUN Xiang¹, ZHANG Yong-yong¹, LIU Yuan-meng¹

¹College of Environment and Resources, Fuzhou University, Fuzhou 350116, China;
²College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;
³Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Received:2020-12-23 Revised:2021-03-08 Online:2021-07-15 Published:2022-01-15
Contact: *shuiweiman@163.com
Supported by:
National Natural Science Foundation of China (41871198).

摘要/Abstract

摘要： 喀斯特退化天坑的负地形生境中阴坡和阳坡的局域环境具有显著差异,导致植物群落类型差异明显。本研究以云南沾益退化天坑深陷塘为例,探究退化天坑阴坡与阳坡壳斗科植物功能性状特征,有助于揭示天坑的物种多样性保护库价值。结果表明: 阴坡土壤营养物质含量高于阳坡,阴坡壳斗科植物的叶面积、比叶面积和叶干重显著大于阳坡,叶厚度显著小于阳坡,叶干物质含量小于阳坡;阴坡壳斗科植物功能性状的主要环境影响因子是土壤全钾和土壤含水量,全磷是阳坡的主要环境影响因子。阴坡的叶功能性状变异程度小于阳坡,主要是以改变叶干重增加植物体内光合速率和碳积累能力的方式适应阴坡生境;阳坡通过保持较小比叶面积,增加叶面积变异程度来获得更多的资源。退化天坑深陷塘阴坡植物群落演替速度明显快于阳坡,壳斗科植物优势在阴坡逐渐减小,在阳坡仍是优势建群种。

关键词: 喀斯特退化天坑, 壳斗科, 植物功能性状, 阴坡, 阳坡

Abstract: In the negative terrain habitat of the karst degraded tiankeng, the shady and sunny slopes are dramatically different, which results in substantial variations in plant communities. With the degraded tiankeng Shenxiantang in Zhanyi, Yunnan as an example, we explored the functional traits of Fagaceae plants in the shady and sunny slopes, which would help reveal the value of tiankeng as species diversity conservation pool. The results showed that soil nutrients in the shady slope were more than those in the sunny slope. Leaf area, specific leaf area and leaf dry weight of Faga-ceae plants in the shady slope were significantly larger than those in the sunny slope. Leaf thickness was significantly lower than that in the sunny slope. Dry matter content of leaves was less than that of the sunny slope. The main environmental factors affecting functional traits of Fagaceae plants in the shady slope were soil total potassium concentration and soil moisture, while soil total phosphorus concentration was the key factor in the sunny slope. The extent of variation of leaf functional traits in shady slope was less than that in the sunny slope. Fagaceae plants mainly adapted to the shady slope habitat by changing the leaf dry weight to increase photosynthetic rate and carbon accumulation abi-lity. Sunny slope obtained more resource by keeping smaller specific leaf area and increasing the extent of variation of the leaf area. The succession rate of plant community in the shady slope of the degraded tiankeng Shenxiantang was significantly faster than that in the sunny slope. The dominance of Fagaceae plants gradually decreased in the shady slope, but remained to be the constructive species in the sunny slope.

Key words: karst degraded tiankeng, Fagaceae, plant functional trait, shady slope, sunny slope

冯洁, 江聪, 税伟, 朱粟锋, 郭平平, 孙祥, 张永永, 刘橼锰. 喀斯特退化天坑阴坡阳坡壳斗科植物的功能性状特征[J]. 应用生态学报, 2021, 32(7): 2301-2308.

FENG Jie, JIANG Cong, SHUI Wei, ZHU Su-feng, GUO Ping-ping, SUN Xiang, ZHANG Yong-yong, LIU Yuan-meng. Functional traits of Fagaceae plants in shady and sunny slopes in karst degraded tiankeng[J]. Chinese Journal of Applied Ecology, 2021, 32(7): 2301-2308.

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喀斯特退化天坑阴坡阳坡壳斗科植物的功能性状特征

Functional traits of Fagaceae plants in shady and sunny slopes in karst degraded tiankeng

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