南京近郊麻栎林冠层蒸腾时间变化及降温效应

刘鑫; 张金池; 谢德晋; 庄家尧; 邵永昌; 张水锋

doi:10.11833/j.issn.2095-0756.2015.04.006

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南京近郊麻栎林冠层蒸腾时间变化及降温效应

刘鑫 , 张金池 , 谢德晋 , 庄家尧 , 邵永昌 , 张水锋

文章导航 > 浙江农林大学学报 > 2015 > 32(4): 529-536

刘鑫, 张金池, 谢德晋, 庄家尧, 邵永昌, 张水锋. 南京近郊麻栎林冠层蒸腾时间变化及降温效应[J]. 浙江农林大学学报, 2015, 32(4): 529-536. doi: 10.11833/j.issn.2095-0756.2015.04.006

引用本文:

LIU Xin1, ZHANG Jinchi, XIE Dejin, ZHUANG Jiayao, SHAO Yongchang, ZHANG Shuifeng. Temporal variation for canopy transpiration and its cooling properties in a Quercus acutissima forest of suburban Nanjing[J]. Journal of Zhejiang A&F University, 2015, 32(4): 529-536. doi: 10.11833/j.issn.2095-0756.2015.04.006

Citation:

LIU Xin1, ZHANG Jinchi, XIE Dejin, ZHUANG Jiayao, SHAO Yongchang, ZHANG Shuifeng. Temporal variation for canopy transpiration and its cooling properties in a Quercus acutissima forest of suburban Nanjing[J]. Journal of Zhejiang A&F University, 2015, 32(4): 529-536. doi: 10.11833/j.issn.2095-0756.2015.04.006

南京近郊麻栎林冠层蒸腾时间变化及降温效应

doi: 10.11833/j.issn.2095-0756.2015.04.006

1.
南京林业大学水土保持与生态修复重点实验室，江苏南京 210037;
2.
南京森林警察学院，江苏南京 210023

基金项目:

长三角水源区面源污染林业生态修复技术研究项目（201104055-1）;国家林业公益性行业重大专项（201104005）;江苏高校优势学科建设工程资助项目（PAPD）

详细信息

中图分类号: S715.4

Temporal variation for canopy transpiration and its cooling properties in a Quercus acutissima forest of suburban Nanjing

1.
Jiangsu Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing 210037, Jiangsu, China;
2.
Nanjing Forest Police College, Nanjing 210023, Jiangsu, China

Funds:

长三角水源区面源污染林业生态修复技术研究项目（201104055-1）;国家林业公益性行业重大专项（201104005）;江苏高校优势学科建设工程资助项目（PAPD）

摘要: 2012年9月和10月及2013年5－8月，利用树干液流仪和小气象站对南京近郊东善桥林场的麻栎Quercus acutissima树干液流速率及环境因子进行连续观测，分析麻栎林冠层蒸腾量及其对周边环境的降温效应。结果表明：①各月麻栎液流密度均在13:00左右达到最大值，其中8月峰值最高（18.78 gcm－2h－1），6月峰值最低（13.49 gcm－2h－1）；②5－10月麻栎林冠层蒸腾总量为237.52 mm，7月冠层蒸腾量最高（50.46 mm），10月冠层蒸腾量最低（29.86 mm）；③7月的蒸腾耗能量与太阳辐射能量值最高，分别为154.97 MJm－2，489.65 MJm－2，8月冠层蒸腾耗能系数最高（35.82%），10月的冠层蒸腾耗能系数最低（25.76%）；④麻栎林7月冠层蒸腾降温值最高（3.07 ℃），生长期平均可降温（2.35 0.53） ℃。图6表1参28
- 森林水文学 /
- 麻栎林 /
- 冠层蒸腾 /
- 降温
Abstract: Global warming and regional water resources shortage have become the focus of the global. Climate warming affects global hydrological cycles, and tree transpiration also affects climate warming. This study was conducted to analyze canopy transpiration of Quercus acutissima and to determine its cooling effect on surrounding environments. Continuous observation of the sap flow density and environmental factors, such as solar radiation, air temperature, air relative humidity, soil temperature, soil water content, used a sap flow meter and a mini weather station in Nanjing Dongshanqiao Forest Farm. Maximum sap flux density, peak daily sap flux density, transpiration heat flux, solar energy, consumed-energy coefficient, and canopy transpiration cooling was conducted according these data. Six trees of different diameter grade were observed. Results indicated that 1） the maximum sap flux density appeared at 13:00; the greatest peak daily sap flux density was 18.78 gcm-2h-1 in August, and the lowest was 13.49 gcm-2h-1 in June. 2） Canopy transpiration summed from May to October was 237.52 mm with the highest month being July. 3） July also had the greatest transpiration heat flux （154.97 MJ m-2） and solar energy （489.65 MJm-2）. The coefficient of consumed-energy for canopy transpiration was highest in August （35.8%） and lowest in October （25.8%）. 4） Canopy transpiration cooling from Q. acutissima was highest in July （3.07 ℃）, and during the growing season, canopy transpiration reduced the average temperature （2.35 0.53）℃h-1 per 10 m3 air. According to the transpiration and its cooling effect, we could choose suitable afforestation design in order to alleviate global warming and heat island effect ［Ch, 6 fig. 1 tab. 28 ref.］
- forest hydrology /
- Quercus acutissima forest /
- canopy transpiration /
- cooling

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南京近郊麻栎林冠层蒸腾时间变化及降温效应

doi: 10.11833/j.issn.2095-0756.2015.04.006

1. 南京林业大学水土保持与生态修复重点实验室，江苏南京 210037;

2. 南京森林警察学院，江苏南京 210023

基金项目:

长三角水源区面源污染林业生态修复技术研究项目（201104055-1）;国家林业公益性行业重大专项（201104005）;江苏高校优势学科建设工程资助项目（PAPD）

收稿日期: 2014-11-20
修回日期: 2014-12-24
刊出日期: 2015-08-20

中图分类号: S715.4

关键词:

摘要: 2012年9月和10月及2013年5－8月，利用树干液流仪和小气象站对南京近郊东善桥林场的麻栎Quercus acutissima树干液流速率及环境因子进行连续观测，分析麻栎林冠层蒸腾量及其对周边环境的降温效应。结果表明：①各月麻栎液流密度均在13:00左右达到最大值，其中8月峰值最高（18.78 gcm－2h－1），6月峰值最低（13.49 gcm－2h－1）；②5－10月麻栎林冠层蒸腾总量为237.52 mm，7月冠层蒸腾量最高（50.46 mm），10月冠层蒸腾量最低（29.86 mm）；③7月的蒸腾耗能量与太阳辐射能量值最高，分别为154.97 MJm－2，489.65 MJm－2，8月冠层蒸腾耗能系数最高（35.82%），10月的冠层蒸腾耗能系数最低（25.76%）；④麻栎林7月冠层蒸腾降温值最高（3.07 ℃），生长期平均可降温（2.35 0.53） ℃。图6表1参28

English Abstract

Temporal variation for canopy transpiration and its cooling properties in a Quercus acutissima forest of suburban Nanjing

1. Jiangsu Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, Nanjing 210037, Jiangsu, China;

2. Nanjing Forest Police College, Nanjing 210023, Jiangsu, China

Funds:

长三角水源区面源污染林业生态修复技术研究项目（201104055-1）;国家林业公益性行业重大专项（201104005）;江苏高校优势学科建设工程资助项目（PAPD）

Received Date: 2014-11-20
Rev Recd Date: 2014-12-24
Publish Date: 2015-08-20

Keywords:

Abstract: Global warming and regional water resources shortage have become the focus of the global. Climate warming affects global hydrological cycles, and tree transpiration also affects climate warming. This study was conducted to analyze canopy transpiration of Quercus acutissima and to determine its cooling effect on surrounding environments. Continuous observation of the sap flow density and environmental factors, such as solar radiation, air temperature, air relative humidity, soil temperature, soil water content, used a sap flow meter and a mini weather station in Nanjing Dongshanqiao Forest Farm. Maximum sap flux density, peak daily sap flux density, transpiration heat flux, solar energy, consumed-energy coefficient, and canopy transpiration cooling was conducted according these data. Six trees of different diameter grade were observed. Results indicated that 1） the maximum sap flux density appeared at 13:00; the greatest peak daily sap flux density was 18.78 gcm-2h-1 in August, and the lowest was 13.49 gcm-2h-1 in June. 2） Canopy transpiration summed from May to October was 237.52 mm with the highest month being July. 3） July also had the greatest transpiration heat flux （154.97 MJ m-2） and solar energy （489.65 MJm-2）. The coefficient of consumed-energy for canopy transpiration was highest in August （35.8%） and lowest in October （25.8%）. 4） Canopy transpiration cooling from Q. acutissima was highest in July （3.07 ℃）, and during the growing season, canopy transpiration reduced the average temperature （2.35 0.53）℃h-1 per 10 m3 air. According to the transpiration and its cooling effect, we could choose suitable afforestation design in order to alleviate global warming and heat island effect ［Ch, 6 fig. 1 tab. 28 ref.］

引用本文: