[1]ZHOU Juan,CHEN Li-hua,GUO Wen-ti,et al.Spatial Structural Characteristics of Natural Populus davidiana-Betula Platyphylla Forest in the Great Liaohe River Basin[J].Research of Soil and Water Conservation,2013,20(06):77-83.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 06
Page number:
77-83
Column:
Public date:
2013-12-28
- Title:
-
Spatial Structural Characteristics of Natural Populus davidiana-Betula Platyphylla Forest in the Great Liaohe River Basin
- Author(s):
-
ZHOU Juan1, CHEN Li-hua1, GUO Wen-ti1, WU Qiao-ying1, LI Chang-xuan1, LI Hai-yan2
-
1. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;
2. Fushun Authority of Liaoning Laotudingzi National Nature Reserve, Fushun, Liaoning 113208, China
-
- Keywords:
-
natural Populus davidiana-Betula allegheniensis secondary forests; mingling degree; neighborhood comparison; uniform angle index; spatial structure
- CLC:
-
S718.5
- DOI:
-
-
- Abstract:
-
Taking Natural Populus davidiana-Betula allegheniensis secondary forests in the Liaoning Laotudingzi National Nature Reserve as the research object, we used the mingling degree,breast height (DBH) and heigh neighborhood comparison and the uniform angle index to analyze the spatial structural characteristics of the mixed forest.The results showed that the average mingling degree was 0.62,with the individuals at high and extremely high mingling degree reached to 53.1%, and the average mingling degree of Betula allegheniensis and Populus davidiana was 0.87 and 0.74, respectively, indicating that Natural Betula allegheniensis-Populus davidiana secondary forests was mixed with high mingling degree.The neighborhood comparison based on the diameter at DBH and tree height was almost the same,suggesting that the Betula allegheniensis and Populus davidiana were in the transition state from dominant to subdominant, and the proportion of the dominant trees were more than 70%. The average uniform angle index of the whole stand, Betula allegheniensis and Populus davidiana was 0.52,0.54 and 0.55, respectively. The forest plantation presented a gathering distribution pattern and the proportion of trees that had the mingling degree reached to 53.1%.