Characteristics of Vegetation Succession and Soil Moisture in Abandoned Cropland of Arid Desert Region

doi:10.7522/j.issn.1000-694X.2017.00040

Journal of Desert Research ›› 2018, Vol. 38 ›› Issue (4): 800-807.DOI: 10.7522/j.issn.1000-694X.2017.00040

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Characteristics of Vegetation Succession and Soil Moisture in Abandoned Cropland of Arid Desert Region

Ma Junmei, Man Duoqing, Li Delu, Liu Youjun, Guo Chunxiu

State Key Laboratory of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730000, China

Received:2017-03-21 Revised:2017-05-03 Online:2018-07-20 Published:2018-11-06

Abstract

Abstract: In this study, 27 samples from cultivated land abandoned for different years in Minqin,Gansu were surveyed by using the method of space-time interchange. Vegetation community characteristics and soil water content were analyzed by descriptive statistical analysis, and the relationship between plant succession and soil moisture was explored by multiple linear regression. The results showed that:(1) During the 18 years of natural succession of abandoned land, the natural succession process of the abandoned farmland community was as follows:mixed herbs and shrubs-single herbaceous herbs-mixed annual and perennial herbaceous community-shrub species increase and gradually the dominant species. The diversity and richness index of the species increased during the 18 years. (2) Soil moisture increased at different soil depths and gradually increased with the increase of soil depth during the same time. (3) Soil moisture has a significant effect on species Margalef index and Shannon-Wiener index. Compared with other soil layers, the soil layer of 40-50 cm depth has the most significant contribution to vegetation growth and succession.

Key words: abandoned land, arid desert region, vegetation succession, species diversity, soil moisture, correlation

CLC Number:

S152.75

Ma Junmei, Man Duoqing, Li Delu, Liu Youjun, Guo Chunxiu. Characteristics of Vegetation Succession and Soil Moisture in Abandoned Cropland of Arid Desert Region[J]. Journal of Desert Research, 2018, 38(4): 800-807.

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Characteristics of Vegetation Succession and Soil Moisture in Abandoned Cropland of Arid Desert Region

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