Universität zu Köln

Liu, Yangyang, Yang, Yue, Wang, Qian, Khalifa, Muhammad, Zhang, Zhaoying, Tong, Linjing, Li, Jianlong and Shi, Aiping (2019). Assessing the Dynamics of Grassland Net Primary Productivity in Response to Climate Change at the Global Scale. Chin. Geogr. Sci., 29 (5). S. 725 - 741. NEW YORK: SPRINGER. ISSN 1993-064X

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Abstract

Understanding the net primary productivity (NPP) of grassland is crucial to evaluate the terrestrial carbon cycle. In this study, we investigated the spatial distribution and the area of global grassland across the globe. Then, we used the Carnegie-Ames-Stanford Approach (CASA) model to estimate global grassland NPP and explore the spatio-temporal variations of grassland NPP in response to climate change from 1982 to 2008. Results showed that the largest area of grassland distribution during the study period was in Asia (1737.23 x 10(4) km(2)), while the grassland area in Europe was relatively small (202.83 x 10(4) km(2)). Temporally, the total NPP increased with fluctuations from 1982 to 2008, with an annual increase rate of 0.03 Pg C/yr. The total NPP experienced a significant increasing trend from 1982 to 1995, while a decreasing trend was observed from 1996 to 2008. Spatially, the grassland NPP in South America and Africa were higher than the other regions, largely as a result of these regions are under warm and wet climatic conditions. The highest mean NPP was recorded for savannas (560.10 g C/(m(2)center dot yr)), whereas the lowest was observed in open shrublands with an average NPP of 162.53 g C/(m(2)center dot yr). The relationship between grassland NPP and annual mean temperature and annual precipitation (AMT, AP, respectively) varies with changes in AP, which indicates that, grassland NPP is more sensitive to precipitation than temperature.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Liu, Yangyang UNSPECIFIED UNSPECIFIED UNSPECIFIED Yang, Yue UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Qian UNSPECIFIED UNSPECIFIED UNSPECIFIED Khalifa, Muhammad UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhang, Zhaoying UNSPECIFIED UNSPECIFIED UNSPECIFIED Tong, Linjing UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, Jianlong UNSPECIFIED UNSPECIFIED UNSPECIFIED Shi, Aiping UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-132032
DOI:	10.1007/s11769-019-1063-x
Journal or Publication Title:	Chin. Geogr. Sci.
Volume:	29
Number:	5
Page Range:	S. 725 - 741
Date:	2019
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1993-064X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CARBON USE EFFICIENCY; INTERANNUAL VARIABILITY; TIBETAN PLATEAU; ATMOSPHERIC CO2; PATTERNS; DROUGHT; BIOMASS; CHINA; SEQUESTRATION; SENSITIVITY Multiple languages Environmental Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13203