干旱区生态环境知识资源中心(Arid): 我国不同季节陆地植被NPP对气候变化的响应

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	我国不同季节陆地植被NPP对气候变化的响应
其他题名	Seasonal Dynamics of Terrestrial Net Primary Production in Response to Climate Changes in China
	朴世龙; 方精云; 陈安平
来源期刊	植物学报
ISSN	1672-6650
出版年	2003
卷号	45 期号:3 页码:269-275
中文摘要	阐明不同季节陆地植被净第一性生产力（NPP）对全球变化的响应将有助于理解陆地生态系统和气候系统之间的相互作用以及NPP变化机制。本文使用1982－1999年间的AVHRR／NDVI、气温、降水以及太阳辐射等资料，结合植被分布图和土壤质地图，利用生态过程模型，研究不同季节我国陆地植被NPP的年际变化及其地理分异。结果表明，在1982－1999年的18年间，4个季节的NPP都呈显著增加趋势。其中，春季是NPP增加速率最快的季节，夏季是NPP增加量最大的季节，不同植被类型对全球变化的响应有很大差异。常绿阔叶林，常绿针叶林和落叶针叶林NPP的增加主要由生长季节的提前所致。而落叶阔叶林、针阔混交林、矮林灌丛，温带草原及草甸，稀树草原、高寒植被，荒漠以及人工植被NPP的增加主要来自生长季生长加速的贡献。从区域分布看，在四季中春季NPP增加量最大的地区主要集中在东部季风区域；夏季NPP增量最大的地区包括西北干旱区域和青藏高原的大部分地区，小兴安岭－长白山区，三江平原，松辽平原，四川盆地，雷州半岛，长江中下游部分地区以及江南山地东部；而秋季植被NPP增加量最大的地区主要有云南高原－西藏东部和呼伦湖的周围等地区。不同植被和地理区域NPP的这些响应方式与区域气候特征及其变化趋势有关。
英文摘要	Study on seasonal responses of terrestrial net primary production (NPP) to climate changes is to help understand feedback between climate systems and terrestrial ecosystems and mechanisms of increased NPP in the northern middle and high latitudes. In this study, time series dataset of normalized difference vegetation index (NDVI) and corresponding ground-based information on vegetation,climate, soil, and solar radiation, together with an ecological process model, were used to explore the seasonal trends of terrestrial NPP and their geographical differences in China from 1982 to 1999. As the results, seasonal total NPP in China showed a significant increase for all four seasons (spring,summer, autumn and winter) during the past 18 years. The spring NPP indicated the largest increase rate, while the summer NPP was with the largest increase in magnitude. The response of NPP to climate changes varied with different vegetation types. The increased NPP was primarily led by an advanced growing season for broadleaf evergreen forest, needle-leaf evergreen forest, and needle-leaf deciduous forest, whilst that was mainly due to enhanced vegetation activity (amplitude of growth cycle) during growing season for broadleaf deciduous forest, broadleaf and needle-leaf mixed forest, broadleaf trees with groundcover, perennial grasslands, broadleaf shrubs with grasslands, tundra, desert, and cultivation. The regions with the largest increase in spring NPP appeared mainly in eastern China, while the areas with the largest increase in summer NPP occurred in most parts of Northwestern China, Qinghai-Xizang Plateau, Mts. Xiaoxinganling-Changbaishan, Sanjiang Plain, Songliao Plain, Sichuan Basin, Leizhou Peninsula, part of the middle and lower Yangtze River, and southeastern mountainous areas of China. In autumn, the largest NPP increase appeared in Yunnan Plateau-Eastern Xizang and the areas around Hulun Lake. Such different ways of the NPP responses depended on regional climate attributes and their changes.
英文关键词	Carnegie-Ames-Stanford-Approach (CASA) model net primary production (NPP) seasonal change normalized difference vegetation index (NDVI) climate change
语种	英语
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:1219505
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204578
作者单位	Department of Ecology, Peking University, Key Laboratory for Earth Processes of the Ministry of Education, BeiJing 100871, China
推荐引用方式 GB/T 7714	朴世龙,方精云,陈安平. 我国不同季节陆地植被NPP对气候变化的响应[J]. 北京大学,2003,45(3):269-275.
APA	朴世龙,方精云,&陈安平.(2003).我国不同季节陆地植被NPP对气候变化的响应.植物学报,45(3),269-275.
MLA	朴世龙,et al."我国不同季节陆地植被NPP对气候变化的响应".植物学报 45.3(2003):269-275.