| 摘要: |
| 高州油茶 Camellia gauchowensis 是华南区域主栽油茶品种之一。 探讨核算其林分固碳释氧和增
湿降温能力, 旨在为其生态功能综合评价提供数据参考。 文章以揭阳市内高州油茶成林为研究对象, 采用
光合仪测定其光合蒸腾参数; 利用积分法测算其单位叶面积固碳量、 释氧量、 增湿量和降温量; 结合叶面
积指数核算其单位林地面积固碳量、 释氧量、 增湿量和降温量; 运用环境效益评价法估算揭阳市内现有高
州油茶林生态效益。 结果表明高州油茶单位叶面积固碳量、 释氧量、 增湿量和降温量存在明显的季节差
异, 固碳释氧能力夏季高于冬季, 全年季节变化由大到小依次为 9 月、 7 月、 1 月、 3 月和 11 月, 其单位
叶面积日平均固碳量和释氧量分别为 6. 777 g·m
-2·d
-1
、 4. 929 g·m
-2·d
-1
; 增湿降温作用夏季明显,
全年季节变化由大到小依次为 7 月、 9 月、 11 月、 1 月和 3 月, 分别为 1 090. 073 g·m
-2·d
-1 和 0. 210
℃; 高州油茶单位林地面积日平均固碳量、 释氧量、 增湿量和降温量分别为 18. 841 g·m
-2·d
-1
、 13. 702
g·m
-2·d
-1
、 3 030. 402 g·m
-2·d
-1
、 0. 585 ℃。 揭阳市现有高州油茶林面积为 1 400 hm
2
, 其全年固碳
量、 释氧量、 增湿量和降温量分别为 6. 07 万 t、 4. 41 万 t、 975. 79 万 t、 1. 88×10
9℃。 揭阳市全年固碳释
氧及增湿降温计量获得的总货币效益为 5. 68 亿元。 由此可见, 高州油茶具有良好的生态功能效益。 |
| 关键词: 高州油茶 固碳释氧 增湿降温 生态效益 计量核算 广东揭阳 |
| DOI： |
| 投稿时间：2023-06-13修订日期：2023-09-21 |
| 基金项目: |
|
| Evaluation of Carbon Sequestration and Oxygen Release, Humidification and Cooling Capacity of Camellia gauchowensis Forest, East Guangdong |
| LiuZhen,FuZhiqiang,ShenChunhui,XiRuchun |
| (College of Forestry and Landscape Architecture, South China Agricultural University) |
| Abstract: |
| Camellia gauchowensis is one of the main cultivars of Camellia in south China. This study was
conducted to calculate the carbon sequestration, oxygen release, humidification and cooling capacity of C. gauchowensis, aiming at providing data reference for the evaluation of the comprehensive benefits of its ecological functions. We measured the photosynthetic transpiration parameters using a photosynthesis meter and calculated the carbon sequestration, oxygen release, humidification and cooling capacity per unit leaf area using the integration method. Combined with the leaf area index, we calculated the carbon sequestration, oxygen release, humidification and cooling capacity per unit forestland area; and used the environmental benefit evaluation method to estimate the ecological benefits of C. gauchowensis forest existing in Jieyang. There were significant seasonal differences in carbon sequestration, oxygen release, humidification and cooling perunitleafarea of C. gauchowensis; The carbon and oxygen sequestration and release capacity of C. gauchowensis was higher in summer than in winter, and the seasonal changes throughout the year was from large to small in September, July, January, March and November, the average daily carbon sequestration and oxygen release per unit leaf area were 6. 777 g·m-2·d-1 and 4. 929 g·m
-2·d-1. The humidity and cooling effect were obvious in summer, and the seasonal changes throughout the year were from large to small in July, September, November, January and
March, these values were 1 090. 073 g·m
-2·d
-1
and 0. 210 ℃ respectively. The meanvalues of carbon sequestration, oxygen release, humidification and cooling per unit forestland area of C. gauchowensis were 18. 841
g·m
-2·d
-1
, 13. 702 g·m
-2·d
-1
, 3 030. 402 g·m
-2·d
-1
and 0. 585 ℃ respectively. At present, there are
1 400 hm
2
of C. gauchowensis forest in Jieyang, Guangdong Province, and its annual carbon sequestration,
oxygen release, humidification and cooling capacity are 60 700 tons, 44 100 tons, 9 757 900 tons, 1. 88 ×
10
9 ℃ respectively. The total monetary benefit obtained from carbon sequestration oxygen release and humidification and cooling measurement for the year is 5. 68 billion yuan in Jieyang. This indicates that C. gauchowensis
has good ecological function benefits. |
| Key words: Camellia gauchowensis carbon fixation and oxygen release humidification and cooling ecological benefit measurement and accounting Jieyang |
