Liu Fang; Zhang Hongqi; Xu Erqi; Kang Lei
Source Publicationjournalofresourcesandecology
AbstractVarious environmental factors affect net primary productivity (NPP) of grassland ecosystem. Extensive reports on the effects of environmental variables on NPP can be found in literature. However, the agreement on the relative importance of various factors in shaping the spatial pattern of grassland NPP has not yet been reached. Here a grassland in situ NPP database comprising 602 samples in northern China for 1980–1999 was developed based on a literature review of published biomass and forage yield field measurements. Correlation analyses and dominance analysis were used to quantify the separate and combined effects of environmental variables (climate, topography and soil) on spatial variation in NPP separately. Grassland NPP ranged from 4.76 g C m~(–2)a~(–1) to 975.94 g C m~(–2)a~(–1), showing significant variations in space. NPP increased with annual precipitation and declined with annual mean temperature significantly. Specifically, precipitation had the greatest impact on deserts, followed by steppes and meadows. Grassland NPP decreased with increasing altitude because of water limitation, and positively correlated with slope, but weakly correlated with aspect. Soil quality showed positive effects on NPP. Annual precipitation was the dominant factor affecting the spatial variability of net primary productivity, followed by elevation.
Document Type期刊论文
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Liu Fang,Zhang Hongqi,Xu Erqi,et al. responsesofgrasslandnetprimaryproductivitytoenvironmentalvariablesinnorthernchina[J]. journalofresourcesandecology,2016,7(2):92.
APA Liu Fang,Zhang Hongqi,Xu Erqi,&Kang Lei.(2016).responsesofgrasslandnetprimaryproductivitytoenvironmentalvariablesinnorthernchina.journalofresourcesandecology,7(2),92.
MLA Liu Fang,et al."responsesofgrasslandnetprimaryproductivitytoenvironmentalvariablesinnorthernchina".journalofresourcesandecology 7.2(2016):92.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu Fang]'s Articles
[Zhang Hongqi]'s Articles
[Xu Erqi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu Fang]'s Articles
[Zhang Hongqi]'s Articles
[Xu Erqi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu Fang]'s Articles
[Zhang Hongqi]'s Articles
[Xu Erqi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.