长江三角洲地区麻栎和栓皮栎蒸腾规律及其对气候因子的响应

阮存鑫; 胡海波; 季婧; 马冰; 刘新亮

doi:10.13870/j.cnki.stbcxb.2021.02.045

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长江三角洲地区麻栎和栓皮栎蒸腾规律及其对气候因子的响应

更新时间：2025-03-12

- 长江三角洲地区麻栎和栓皮栎蒸腾规律及其对气候因子的响应
- Transpiration Regulations and Responses to Climate Factors of
- 水土保持学报 2021年35卷第2期页码：338-344
- 作者机构：
  
  1. 南京林业大学南方现代林业协同创新中心,南京,210037
  2. 江苏省水土保持与生态修复重点实验室,南京,210037
- 作者简介：
  
  [ "阮存鑫(1983—),男,博士研究生,主要从事森林生态、城市水文研究。E-mail:625914253@qq.com" ]
- 基金信息：
  
  国家林业和草原局长江三角洲森林生态系统定位研究项目（2020132077）江苏省高等学校林学优势学科建设项目（164010641）江苏省高校研究生科研创新计划项目（CX2213_0555）
- DOI：10.13870/j.cnki.stbcxb.2021.02.045
  中图分类号： S715.4
- 纸质出版：2021
- 稿件说明：
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阮存鑫, 胡海波, 季婧, 等. 长江三角洲地区麻栎和栓皮栎蒸腾规律及其对气候因子的响应[J]. 水土保持学报, 2021,35(2):338-344.

RUAN Cunxin, HU Haibo, JI Jing, et al. Transpiration Regulations and Responses to Climate Factors of[J]. 2021, 35(2): 338-344.
阮存鑫, 胡海波, 季婧, 等. 长江三角洲地区麻栎和栓皮栎蒸腾规律及其对气候因子的响应[J]. 水土保持学报, 2021,35(2):338-344. DOI： 10.13870/j.cnki.stbcxb.2021.02.045.

RUAN Cunxin, HU Haibo, JI Jing, et al. Transpiration Regulations and Responses to Climate Factors of[J]. 2021, 35(2): 338-344. DOI： 10.13870/j.cnki.stbcxb.2021.02.045.

摘要

森林蒸腾在维系森林生态系统水量平衡上起着重要作用，研究麻栎和栓皮栎的蒸腾耗水规律，有助于了解栎林的水文过程和水量平衡。采用热扩散探针法，对江苏省句容市麻栎和栓皮栎林蒸腾速率进行连续观测，研究蒸腾速率在晴天、阴天和雨天的日变化特征，以及不同天气下气候因子对蒸腾速率的影响机制。结果表明，麻栎和栓皮栎蒸腾速率日变化在晴天、阴天均为单峰型，而雨天峰型波动较大。晴天峰值出现在11：30—12：30，阴天峰值出现在13：30—14：00。不同天气下，麻栎、栓皮栎日均蒸腾速率表现为麻栎>栓皮栎，晴天>阴天>雨天。总辐射、气温、饱和水汽压差与麻栎、栓皮栎蒸腾速率呈极显著正相关。总辐射对麻栎、栓皮栎蒸腾速率的贡献最大，在晴天其贡献度分别为91.7%和85.5%，而在阴天为71.0%和80.1%，在雨天为50.4%和57.9%。总辐射是影响麻栎和栓皮栎蒸腾速率最大的气候因子，其次是饱和水汽压差、气温和土壤含水量。

Abstract

Forest transpiration plays an important role in maintaining the water balance of forest ecosystem. Studying transpiration regulations of Quercus acutissima and Quercus variabilis is helpful to understand the hydrology process and water balance of Quercus spp. forest. In this study

the transpirations of Q. acutissima and Q. variabilis were observed continually by the thermal diffusion probe method in Jurong City

Jiangsu Province. Meanwhile

the daily dynamic characters of transpiration and the impact mechanism of climatic factors on transpiration rate under different weather circumstances were studied. The results showed that the daily variation of transpiration rate showed single peak curve in sunny days and cloudy days

and fluctuate peak pattern in rainy days. The peak value was appeared in 11:30—12:30 in sunny days and 13:30—14:00 in cloudy days. The daily mean transpiration for Q. acutissima and Q. variabilis under different weathers were showed as follow:Q. acutissima>Q. variabilis

sunny day>cloudy day>rainy day. The transpiration rate of Q. acutissima and Q. variabilis were significantly positive correlated to the total solar radiation

the atmospheric temperature

and the vapor pressure deficiency. The total solar radiation had the greatest contribution to the transpiration rate of Q. acutissima and Q. variabilis. The contribution rate were 91.7% and 85.5% in sunny days

71.0% and 80.1%in cloudy days

50.4% and 57.9% in rainy days. The total solar radiation among climatic factors had the most important influence on the transpiration rate of Q. acutissima and Q. variabilis

followed by vapour pressure deficit

air temperature

and soil water content.

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