Changes of Vegetation and Soil Environment of Desert Grassland in the Early Period of Restoration in Alxa,Inner Mongolia

JOURNAL OF DESERT RESEARCH ›› 2003, Vol. 23 ›› Issue (6): 661-664.

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Changes of Vegetation and Soil Environment of Desert Grassland in the Early Period of Restoration in Alxa,Inner Mongolia

FU Hua¹, CHEN Ya-ming², ZHOU Zhi-yu¹, AI Dong³, ZHOU Zhi-gang³

1. College of Pastoral Agriculture Science and Technology of Lanzhou University, Gansu Grassland Ecological Research Institute, Lanzhou 730020, China;
2. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000, China;
3. Alashan Grassland Station, Bayanhaote 750306, China

Received:2002-06-19 Revised:2003-01-21 Online:2003-12-20 Published:2003-12-20

Abstract

Abstract: In this paper,vegetation change and soil nutrition in the early period of restoration of desert grassland in Alxa were studied.The results showed that vegetation coverage and biomass of enclosed desert grassland increased by 272%~536% and 44.39%~305.5% respectively compared to those of unenclosed desert grassland under the similar environments.Vegetation restoration also resulted in the changes of soil physicochemistry properties including the significant increase in contents of organic matter,total nitrogen,available potassium,fine sand,very fine sand and clay,and the decrease in available nitrogen,phosphorus.Significantly,positive correlations were found between soil contents of organic matter,total N,total P and < 0.05 mm clay particle,available K,and between contents of organic matter,total N and total P.

Key words: desert grassland, restoration, vegetation, soil physicochemical properties, Alxa

CLC Number:

Q948.113

FU Hua, CHEN Ya-ming, ZHOU Zhi-yu, AI Dong, ZHOU Zhi-gang. Changes of Vegetation and Soil Environment of Desert Grassland in the Early Period of Restoration in Alxa,Inner Mongolia[J]. JOURNAL OF DESERT RESEARCH, 2003, 23(6): 661-664.

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Changes of Vegetation and Soil Environment of Desert Grassland in the Early Period of Restoration in Alxa,Inner Mongolia

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