|Table of Contents|

Effects of Compontents and Habitat Differences on Litter Production and Decomposition of the Primeval Abies georgei Forest in Southeastern Tibet

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年23
Page:
80-87
Research Field:
Publishing date:

Info

Title:
Effects of Compontents and Habitat Differences on Litter Production and Decomposition of the Primeval Abies georgei Forest in Southeastern Tibet
Author(s):
DAI Songjia1; ZHOU Chenni2; 3; 4; DUAN Fei2; 3; 4; FANG Jiangping2; 3; 4; LONG Chunlin1
(1.College of Life and Environmental Sciences,Minzu University of China,Beijing 100081;2.Res.Institute of Tibet Plateau Ecology,Tibet Agriculture & Animal Husbandry University,Nyingchi,Tibet 860000;3.Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agriculture & Animal Husbandry University),Ministry of Education,Nyingchi,Tibet 860000;4.United Key Laboratories of Ecological Security,Tibet Autonomous Region,Nyingchi,Tibet 860000)
Keywords:
Southeast Tibet; annual yield of litter; Abies georgei var. Smithii forest; components; habitats
PACS:
-
DOI:
10.11937/bfyy.20200540
Abstract:
Taking the litterfalls of Abies georgei var.Smithii in Southeast Tibet as the test material,the production dynamic characteristics of different components and the decomposition characteristics of litters under different components and habitat conditions were studied by litter decomposition bag methods.The purpose of this study was to provide basis data and theoretical foundation for in-depth understanding of the material cycle process of forest ecosystem in high altitude and cold environment.The results showed that,the annual yield of litter in the original fir forest in Southeastern Tibet was (3 555.95±256.79)kg?hm-2,yield of leaves（(1 939.17±84.65)kg?hm-2）>yield of branches（(1 001.27±46.98)kg?hm-2）>yield of others（(615.51±26.74)kg?hm-2）.The yield of litters were significantly different in month and component.The decomposition rate of litters of different components was in the order of leaf-sample（2.21%）>natural sample（2.17%）>branch sample（1.70%）.The decomposition rate of litters under different habitat conditions was in the order of IF（2.17%）>OF（1.94%）>BF（1.93%）.Under the condition of different components,50% of the decomposition time of litters of natural sample,leaf sample and branch sample were 2.11,2.34 and 3.08 years,and 95% of the decomposition time were 8.96,10.02 and 13.18 years;under different habitat conditions (IF,OF and BF),50% of the decomposition time of litters were 2.11,2.52 and 2.34 years,and 95% of the decomposition time were 8.96,10.01 and 10.84 years.

References:

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Last Update: 2021-02-19