Carbon storage allocation pattern of Casuarina equisetifolia Forst with different ages in Wenchang city of Hainan
Journal Title: 广东农业科学 - Year 2018, Vol 45, Issue 11
Abstract
Using the biomass estimation models of Casuarina equisetifolia, we studied the carbon storage and distribution characteristics of C. equisetifolia plantations in Wenchang with different forest ages. The results showed that, the carbon contents of each organ in the C. equisetifolia was in 454~526 g/kg, the average carbon content in each component was: root ＞ leaf ＞ fruit ＞ trunk ＞ branche ＞ bark. The carbon contents in 0-60 cm soil ranged from 0.8 to 9.3 g/kg, and the average carbon content was only 3.6 g/kg. There was significant difference about the carbon content in different soil layers with the same forest age, and the rate of soil carbon content increased with the forest age. Carbon storage order of arbor layer in different forest ages was: over-ripe forest (233.1 t/hm2)＞ mature forest (165 t/hm2)＞ near-mature forest (99.8 t/hm2)＞ middle-aged forest (56.0 t/hm2)＞ young in the aged forest (27.1 t/hm2). The carbon storage of the same organ in different forest ages showed significant differences (P＜0.05), and there was no significant difference between branches and leaves of the middle-aged forest and the near-maturing forest, but there was significant difference among different organs at different ages (P＜0.05). The order of soil carbon storage in different forest ages was: mature forest (34.27 t/hm2)＞ near-maturing forest (22.97 t/hm2)＞ over-ripe forest (20.8 t/hm2)＞ middle-aged forest (15.92 t/hm2)＞ young Lin (12.27 t/hm2), and the same forest age in 0 ~ 10 cm, 10 ~ 20 cm, 20 ~ 40 cm soil layer showed significant differences (P ＜0.05). Besides, the same soil layer between the different ages of the forest was not significant one. The carbon storage in the arbor layer and soil layer werethe main carbon pools of the ecosystem. The carbon storage of the arbors layer was the first carbon pool, which accounts for 79.85%.
Authors and Affiliations
Shao-feng SU, Yang XUE
Keywords
Related Articles
- EP ID EP602385
- DOI 10.16768/j.issn.1004-874X.2018.11.008
- Views 55
- Downloads 0
Segmentation of rice canopy image using the Otsu method based on visual spectral image color related indices
"Digital image analysis of rice canopy has been widely for monitoring rice growth，diagnosis rice N status，and predicting rice yield. The accuracy，stability，and reliability of the rice canopy digital image analysis re...
Effects of fertilization and clipping on the biochemical characteristics of Carex brevicuspis
Carex brevicuspis is one of the most widely distributed plants in Dongting Lake. It has large biomass and high nutritional value, and is an excellent animal husbandry feed resource. In order to reveal the physiological r...
Effects of different fertilizationson the growth and yield parameters of cotton
The dynamic changes of cotton plant height, net photosynthetic rate, bud-shedting rate and root-shoot ratio in different growth stages of cotton under different fertilization treatments were studied in this paper, and th...
Study on variation of growth traits in seedling stage of Schima superba
Grafted clones of Schima superba were cultivated from 211 supper trees in more than 20 counties in Guangdong Province. The variation of seedling growth traits between provenances and clones were analyzed. It showed that...
Research on the difference of influence factors of grain production in China based on grey combination model
The paper simulates the grain yield from 2009 to 2016 to eliminate the fluctuation by GM（1,1） model, and then calculates and analyzes the grey correlation of the grain production and its influence factors of the main g...