[1]DONG Jinwei,LI Yiping,LI Xinkai,et al.Effects of Vegetation Types on Biocrusts and the Underlying Soil Nutrients in Mu Us Sandland[J].Research of Soil and Water Conservation,2019,26(02):112-117.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 02
Page number:
112-117
Column:
Public date:
2019-04-28
- Title:
-
Effects of Vegetation Types on Biocrusts and the Underlying Soil Nutrients in Mu Us Sandland
- Author(s):
-
DONG Jinwei1,2, LI Yiping5, LI Xinkai2,3, LI Bingyin4, GUO Qi4, BU Chongfeng2,4
-
1. Beijing Zhongbang Wenlv Technology Development Co., Ltd., Beijing 100083, China;
2. Institute of Soil and Water Conservation, China Academy of Science, Yangling, Shaanxi 712100, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China
-
- Keywords:
-
Mu Us Sandland; biocrusts; vegetation type; soil nutrients
- CLC:
-
S154
- DOI:
-
-
- Abstract:
-
In order to understand the nutrient effect of desert soil biocrusts and its relationship with shrub vegetation, this study focused on moss and algal crusts widely distributing in the Mu Us Sandland. Typical plots of four types of vegetation were selected and the effects of vegetation types on the distribution of nutrients of biocrusts and underlying soil were discussed in detail. The results showed that: (1) nutrients in algae crusts and underlying soil under the canopy of Artemisia ordosica were higher than those between the canopy, the corresponding values under the canopy of the Salix and Caragana communities were significantly lower than those between the canopies of the vegetation types (p<0.05); (2) soil nutrients in biocrusts of Salix psammophila, Artemisia ordosica and Caragana gradually decreased as soil depth increased, it indicated that soil nutrients in 5—10 cm soil were significantly higher than that in upper soil in grassland; the distribution of total nitrogen and organic matter in moss crust decreased in the order: Caragana korshinskii > grassland > Salix > Artemisia, the total phosphorus content of mossy crust and the nutrient content of algae crust decreased in the order: grassland > Caragana > Artemisia annua > Salix; (3) moss and algae crusts of each vegetation could significantly increase the nutrient contents in the 0—10 cm soil layer, and the nutrient enrichment of moss crusts was better than those of algae crusts.