Changes of plant community biomass and soil nutrients during the vegetation succession on abandoned cultivated land in desert steppe region

By the method of substituting temporal serial with spatial serial, and taking five abandoned cultivated lands with different ages (1, 4, 9, 12, and 20 years) in desert steppe region as test objects, this paper studied the change characteristics of plant community biomass and soil nutrients during ve...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 22; no. 12; p. 3145
Main Authors An, Hui, Yang, Xin-Guo, Liu, Bing-Ru, Li, Xue-Bin, He, Xiu-Zhen, Song, Nai-Ping
Format Journal Article
LanguageChinese
Published China 01.12.2011
Subjects
China
Conservation of Natural Resources
Crops, Agricultural - growth & development
Desert Climate
Ecosystem
Poaceae - growth & development
Population Dynamics
Soil - analysis
Trees - growth & development
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Summary:By the method of substituting temporal serial with spatial serial, and taking five abandoned cultivated lands with different ages (1, 4, 9, 12, and 20 years) in desert steppe region as test objects, this paper studied the change characteristics of plant community biomass and soil nutrients during vegetation succession. With the increasing abandoned years, the plant community aboveground biomass on the abandoned lands increased after an initial decrease, whereas the total nitrogen, total phosphorus, organic carbon contents, and carbon density in 0-60 cm soil layer increased first, decreased then, and increased again, with the maximum values of soil total nitrogen and phosphorus contents appeared on the abandoned lands with the ages 4 and 20 years. During vegetation succession, the effects of soil total nitrogen and organic carbon on plant community biomass were greater than those of soil total phosphorus and soil bulk density.
ISSN:1001-9332