| 中国植被总初级生产力对气候变化的响应 |
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| 引用本文： | 高振翔,叶 剑,丁仁惠,唐 欢,周红根,李 成.中国植被总初级生产力对气候变化的响应[J].水土保持研究,2022,29(4):394-399+414. |
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| 作者姓名： | 高振翔 叶 剑 丁仁惠 唐 欢 周红根 李 成 |
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| 作者单位： | (1.宿迁市气象局, 江苏 宿迁 223800; 2.江苏省气象探测中心, 南京 210008; 3.扬州大学 园艺与植物保护学院, 江苏 扬州 225009) |
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| 摘 要： | 为理解中国植被GPP的变化规律,基于改进后的EC-LUE模型,分析了中国1982—2016年植被GPP的空间格局、变化特征及驱动因子。结果表明:(1)中国植被GPP年变化范围介于0～3 051.08 g C/(m2·a),总体呈现出南高北低的空间分布特征。高值区主要分布在华南、东南沿海地区,低值区分布在青藏高原、新疆、内蒙古西部等地区;(2)近35 a中国植被GPP整体呈增加趋势,增加速率为2.43 g C/(m2·a)(p<0.05),特别是黄土高原地区植被GPP增加趋势明显,但在东北及东南沿海的部分地区呈显著减少的趋势;(3)中国植被GPP变化与气温和降水呈正相关关系,气温和降水强驱动的面积占比8.1%,气温为主要驱动因子的面积占比25.3%,降水为主要驱动因子的面积占比15.1%,气温和降水弱驱动面积占比8.9%。虽然近年来中国植被固碳能力呈变好趋势,但在未来气候变化存在不确定性的背景下,生态保护工作任重道远。
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| 关 键 词： | 植被总初级生产力 气候变化 驱动因子 中国 |
Response of Vegetation Gross Primary Productivity to Climate Change in China |
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| GAO Zhenxiang,YE Jian,DING Renhui,TANG Huan,ZHOU Honggen,LI Cheng.Response of Vegetation Gross Primary Productivity to Climate Change in China[J].Research of Soil and Water Conservation,2022,29(4):394-399+414. |
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| Authors: | GAO Zhenxiang YE Jian DING Renhui TANG Huan ZHOU Honggen LI Cheng |
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| Institution: | (1.Suqian Municipal Meteorological Bureau, Suqian, Jiangsu 223800, China; 2.Jiangsu Municipal and Technical Equipment Centre, Nanjing 210008, China; 3.College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China) |
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| Abstract: | In order to understand the variation characteristics of vegetation gross primary productivity(GPP)in China, based on improved EC-LUE model, the spatiotemporal-variations and driving factors of GPP over China from 1982 to 2016 were analyzed. The results show that:(1)the average annual GPP in China during the 35 years ranged from 0 to 3 051.08 g C/(m2·a), which was higher in the northern China than that in the southern region; the high-value area mainly distributed in the southern and southeast of China, while the low-value area was located in the Qinghai-Tibet Plateau, Xinjiang, and western Inner Mongolia;(2)on the whole, overall GPP showed an increasing trend with an average annual growth rate of 2.43 g C/(m2·a); in particular, vegetation GPP in the Loess Plateau had a significant increasing trend, but it showed a significant decrease in parts of the northeast and southeast regions;(3)the vegetation GPP of China had positive correlations with temperature and precipitation, the air temperature and accumulated precipitation were strong drivers accounting for 8.1%, the air temperature drivers accounted for 25.3%, the accumulated precipitation driver accounted for 15.1%, and the air temperature and accumulated precipitation were weak drivers accounted for 8.9%. Although the vegetation carbon sequestration capacity in China had the improving trend, but the ecological protection work will have a long way to go under the background of uncertainty climate change in future. |
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| Keywords: | gross primary productivity climate change driving factors China |
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