基于网孔分解袋法的荒漠草原柠条枯落物分解过程中的养分变化

Translated title of the contribution: Detection of changes in litter nutrients in Caragana korshinskii following the decomposition process in desertified grassland ecosystems using the litter bag method

Jianan Liu, Juan Zhao, Haitao Chang, Anning Zhang, Wei Chen, Rentao Liu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

An investigation of the elemental nutrient residual rate of Cartagena korshinskii shrub litter was conducted using the litter bag method (4, 2, 0.01 mm) in Yanchi County, Ningxia. The results showed: 1) At 210 days, there was a “release” of litter N and K, whereas there was an “accumulation” of litter P and cellulose in C. korshinskii shrub litter within litter bags with three size meshes. Regarding lignin, there was an “accumulation” in the large shrub microhabitats, whereas there was a “release” in the microhabitats with very small-, small-, and medium-sized shrubs in the 0.01 mm mesh litter bags only. 2) There were no significant (P > 0.05) differences in residual rate in the litter between three types of meshes in the microhabitats of small, medium, and large-sized shrubs. In the microhabitats of very small-sized shrubs, however, the residual rate of litter N, P, and K was in the order of 0.01 mm (–32.99%, 121.03%, –2.04%) > 4 mm (–63.64%, 14.31%, –6.95%) > 2 mm (–75.47%, 9.79%, –36.32%), that of lignin was 0.01 mm (–10.56%) > 2 mm (–46.18%) > 4 mm (–49.59%), and that of cellulose was 2 mm (160.44%) > 4 mm (97.80%) > 0.01 mm (21.56%). It was concluded that there were similar changes in litter nutrient elements N, K, P, and cellulose in microhabitats of very small, small, medium, and large shrubs in all three mesh sizes. However, there were interactive effects of soil faunal groups and shrub canopy sizes on litter lignin following the decomposition process in desertified grassland ecosystems of Ningxia.

Translated title of the contributionDetection of changes in litter nutrients in Caragana korshinskii following the decomposition process in desertified grassland ecosystems using the litter bag method
Original languageChinese (Simplified)
Pages (from-to)1624-1633
Number of pages10
JournalPratacultural Science
Volume36
Issue number6
DOIs
StatePublished - 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 Editorial Office of Pratacultural Science. All rights reserved.

Keywords

  • Caragana korshinskii
  • desertified steppe
  • element change
  • litter bag of different mesh
  • litter decomposition
  • shrub size

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