1. Net ecosystem productivity of temperate grasslands in northern China: An upscaling study
- Author
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Shiping Chen, Bruce K. Wylie, Tianbao Zhao, Jingfeng Xiao, Tagir G. Gilmanov, Lei Ji, Gensuo Jia, Guangsheng Zhou, Wenping Yuan, Li Zhang, Jing Li, Daniel M. Howard, Huadong Guo, Tomomichi Kato, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
- Subjects
2. Zero hunger ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Atmospheric Science ,Global and Planetary Change ,geography ,geography.geographical_feature_category ,Ecology ,Steppe ,Biome ,Growing season ,Forestry ,15. Life on land ,Normalized Difference Vegetation Index ,Grassland ,Latitude ,Productivity (ecology) ,13. Climate action ,Environmental science ,Ecosystem ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,Agronomy and Crop Science ,ComputingMilieux_MISCELLANEOUS - Abstract
a b s t r a c t Grassland is one of the widespread biome types globally, and plays an important role in the terrestrial car- bon cycle. We examined net ecosystem production (NEP) for the temperate grasslands in northern China from 2000 to 2010. We combined flux observations, satellite data, and climate data to develop a piece- wise regression model for NEP, and then used the model to map NEP for grasslands in northern China. Over the growing season, the northern China's grassland had a net carbon uptake of 158 ± 25 g C m−2 during 2000-2010 with the mean regional NEP estimate of 126 Tg C. Our results showed generally higher grassland NEP at high latitudes (northeast) than at low latitudes (central and west) because of different grassland types and environmental conditions. In the northeast, which is dominated by meadow steppes, the growing season NEP generally reached 200-300 g C m −2
- Published
- 2014
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