[1]YAN Deren,ZHANG Shengnan,HUANG Haiguang,et al.Effect of Decomposition of Desert Moss Crust Plant on Soil Improvement[J].Research of Soil and Water Conservation,2020,27(03):225-229,237.
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Effect of Decomposition of Desert Moss Crust Plant on Soil Improvement
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 03
Page number:
225-229,237
Column:
目次
Public date:
2020-04-20
- Title:
- Effect of Decomposition of Desert Moss Crust Plant on Soil Improvement
- Keywords:
- moss biological crust; bryophyte; decomposition process; element content; accumulation coefficient; soil nutrient
- CLC:
- S714.6
- DOI:
- -
- Abstract:
- Bryophytes are pioneers in plant succession in many extreme environments. The study on the decomposition characteristics of desert mossy crust plants and their effects on the changes of nutrients in aeolian sandy soils are important for the scientific evaluation of the ecological functions of moss crusts. The changes of element contents of desert bryophytes and the contents of aeolian sandy soil nutrients were analyzed by the combination of field decomposition test and indoor measurement. The results show that bryophytes decomposition during the period 0.41～2.33 years, the contents of total N, P, K and C of bryophytes present the fluctuating reduction trend, and the content of total Ca increases; the bryophyte decomposition follows the equation, Y=115.42e-0.1033x,and the accumulation coefficients of N, P, K and C in bryophyte residues are 0.89, 0.93, 0.87 and 0.94, respectively, the accumulation coefficients of Ca, Mg and Fe elements are 1.05, 1.06 and 1.02, respectively; the contents of total nitrogen, total phosphorus, available nitrogen, available phosphorus and available potassium in 0—5 cm soil layers show different degrees of increasing trend with the extension of the decomposition process of bryophytes. The decomposition process was slow due to the sandy environment and low N content of desert bryophytes. However, there is still releases of N, P, K and C elements,which increases the nutrient contents of aeolian sandy soil.
- References:
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Last Update:
2020-04-30