气候变化领域集成服务门户(CCPortal): Precipitation influences on the net primary productivity of a tropical seasonal rainforest in Southwest China: A 9-year case study

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DOI	10.1016/j.foreco.2020.118153
	Precipitation influences on the net primary productivity of a tropical seasonal rainforest in Southwest China: A 9-year case study
	Linger E.; Hogan J.A.; Cao M.; Zhang W.-F.; Yang X.-F.; Hu Y.-H.
发表日期	2020
ISSN	0378-1127
卷号	467
英文摘要	The net primary productivity (NPP) of tropical forests is a key part of the global carbon cycle. Numerous studies have estimated tropical forest NPP, yet most of them focus on how annual NPP dynamics vary over several years. Little is known about how NPP responds to long-term climatic variation at the monthly or seasonal scales. We estimated NPP at three-month intervals from 2009 to 2017 for a tropical seasonal rainforest in Xishuangbanna, Southwest China using data from >2000 dendrometer bands and litter fall traps within a 20-ha permanent forest dynamics plot. We asked which climatic factor has the greatest effect on forest NPP at the sub annual scale, and how the relationships vary with seasonality. Calculations showed that NPP ranged from 12 to 20 t ha−1 yr−1, and that forest productivity showed a slight, but insignificant increase from 2009 to 2017. NPP was significantly higher in the wet season than that in the dry season and was significantly related to precipitation only when all data were concerned. During the dry season, precipitation had a significant positive influence on NPP, but no effect during the wet season. We further identified that there was a threshold effect of precipitation on NPP. Specifically, productivity increased more rapidly when monthly precipitation below 229 mm. In summary, we conclude that periods of low rainfall strongly regulate the productivity in this tropical seasonal rainforest which could guide the management design of water use efficiency in tree based land-use system, like agroforestry ecosystems. © 2020 Elsevier B.V.
关键词	Drought Ecosystems Land use Photosynthesis Phytoplankton Tropics Agro-forestry ecosystems Climatic factors Climatic variation Forest productivity Global carbon cycle Net primary productivity Threshold effect Water use efficiency Forestry agroforestry carbon cycle climate variation forest dynamics litterfall net primary production precipitation (climatology)rainforest seasonality trap (equipment)tropical forest water use Drought Ecosystems Forestry Land Use Photosynthesis Tropics China Xishuangbanna Yunnan
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132802
推荐引用方式 GB/T 7714	Linger E.,Hogan J.A.,Cao M.,et al. Precipitation influences on the net primary productivity of a tropical seasonal rainforest in Southwest China: A 9-year case study[J]. Forest Ecology and Management,2020,467.
APA	Linger E.,Hogan J.A.,Cao M.,Zhang W.-F.,Yang X.-F.,&Hu Y.-H..(2020).Precipitation influences on the net primary productivity of a tropical seasonal rainforest in Southwest China: A 9-year case study.,467.
MLA	Linger E.,et al."Precipitation influences on the net primary productivity of a tropical seasonal rainforest in Southwest China: A 9-year case study".467(2020).