Chapter
May 31, 2018
World Environmental and Water Resources Congress 2018

Study of Nutrients to Better Understand Restoration of Grassland Ecosystems in Xinjiang, China

Publication: World Environmental and Water Resources Congress 2018: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management

ABSTRACT

Restorations of vegetation in damaged grassland ecosystems is a challenging task for researchers and requires better understanding of nutrient availability and dynamics. The stoichiometric properties of plant carbon (C), nitrogen (N), and phosphorus (P), and their relationships with soil were studied in different grassland communities i.e., desert steppe, semi-desert steppe, mountain meadows, mountain meadow steppes, and alpine meadows in northwestern, China. The result showed that C contents in below ground parts were lower than in above ground parts from the temperate steppe community. The average values of total C in plant of the above ground (A-ground) and below ground (B-ground) (0~20 cm) were 346.1 g.kg−1 and 341.8 g.kg−1, respectively. The average values of N and P in plant leaves were 13.6 g.kg−1 and 1.7 g.kg−1, respectively. For the below ground part, the average values of N and P were 9.5 g.kg−1 and 1.4 g.kg−1, respectively. By comparison with the mean N and P contents of leaves in China, N contents in the study area were lower, while the P contents were consistent with average values at national level. The average A-ground and B-ground of the chemometrics N/P ratio were 7.5 and 7.1, respectively. N is a limiting factor and it should be taken into consideration for the appropriate supply of nitrogen. This study could provide the theoretical basis for vegetation restorations of damaged ecosystems and support for further protecting grassland and ecosystems.

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Go to World Environmental and Water Resources Congress 2018
World Environmental and Water Resources Congress 2018: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
Pages: 498 - 508
Editor: Sri Kamojjala, Las Vegas Valley Water District
ISBN (Online): 978-0-7844-8140-0

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Published online: May 31, 2018

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Jie Ma
Hebei Univ. of Engineering, Hebei 056038; Xinjiang Institute of Ecologyand Geography, Chinese Academy of Science, Xinjiang 830011; Dept. of Civil and Environmental Engineering and Construction, Univ. of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV 89154-4015
Lanhai Li
Xinjiang Institute of Ecologyand Geography, Chinese Academy of Science, Xinjiang 830011 (corresponding author)
Xiang Liu
Xinjiang Institute of Ecologyand Geography, Chinese Academy of Science, Xinjiang 830011
Achhami Abhusan
Dept. of Civil and Environmental Engineering and Construction, Univ. of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV 89154-4015
Sajjad Ahmad
Dept. of Civil and Environmental Engineering and Construction, Univ. of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV 89154-4015

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