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| Characteristics of coarse woody debris（CWD） in a coast protection forest of Pinus elliottii in China |
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| DOI：10.16768/j.issn.1004-874X.2016.08.015 |
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| Abstract: |
| Coarse woody debris（CWD） is a crucial structure and function element of forest ecosystem as well as the indispensible link of researching biogeochemical cycle process，and Pinus elliottii is one of the most important coast protection forest species in China. The distributions of diameter at breast height（DBH），length，volume of wood ，and decay rank of CWD in the coast protection forest of P. elliottii in China were counted and analyzed. The results showed that the timber of CWD accounted for 5.45（ ±6.39）% of the existing living wood. DBH of CWD distributed at the range of 2.5-17.5 cm evenly in general. The range of tree length of CWD was from 0 to 20 m，most of which were less than 2.4 m. The distribution of wood volume of CWD was from 0 to 0.14 m3. In addition，Level 1 was the least while Level 3 was the most in decay rank with a distribution between 3.0-3.4. The storage of CWD mainly depends on quantity and length，but have no significant relations with decomposition extent. Wind and other outside forces are the main reasons of the production of CWD in a coast protection forest of Pinus Elliottii. Young stage of a coast forest is still a critical period and the decomposition processes were a little different. The results provided a theoretical basis for the management and protection of the coastal protection forest ecosystem in China. |
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