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- Title
三工河流域两种琵琶柴群落凋落物分解与周转研究.
- Authors
汪依妮; 柳鑫; 王昭懿; 帅洪刚; 金宝成; 赵学春
- Abstract
Litterfall is the carrier of material and energy conversion between plants and soil, and an important link of the nutrient cycle in terrestrial ecosystem. In this paper, during the 2010 and 2011 growing seasons (May -- October), we studied the production, decomposition and turnover of the litterfall of two Reaumuria soongorica communities, located in the Sangong River basin with different growth, as well as their association with soil factors and responses. In the research process, we used the collector and decomposition bag method. The results showed that the monthly litterfall production of the two communities increased initially, and decreased thereafter with time. Their production reached the maximum value in July and August, respectively. The annual litterfall production of community 1 and community 2 was 25.42 g·m–2·a–1 and 34.05 g·m–2·a–1, respectively. The supplement amount of litterfall to soil organic carbon was 11.81 g·m–2·a–1 and 17.65 g·m–2·a–1, respectively. The residual rate was 71.81% and 75.60% after a year's decomposition in community 1 and community 2, respectively. When the litterfall decomposition reached 50% and 95%, it took 2.52 and 14.64 years for community 1 and 3.69 and 20.13 years for community 2, respectively. The turnover of litterfall in community 1 and community 2 was 1.21 times·a–1 and 0.98 times·a–1, respectively. Soil water content, pH and bulk density were the main factors affecting the decomposition of litterfall in the two communities.
- Subjects
SOIL moisture; NUTRIENT cycles; DECOMPOSITION method; WATERSHEDS; PLANT-soil relationships
- Publication
Ecological Science, 2023, Vol 42, Issue 3, p92
- ISSN
1008-8873
- Publication type
Article
- DOI
10.14108/j.cnki.1008-8873.2023.03.012