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- W2364093776 abstract "This paper used diameter distribution and spatial parameters(uniform angle index,mingling and neighborhood comparison) to study the spatial structure characteristics of three stands of Quercus aliena var. acuteserrata natural forest in Xiaolongshan. The result showed that the structure of the three stands was obviously different:the diameter distribution in the natural forest in Wang'angou which absented disturbance for 100 years,and in the secondary forest originated from a clear-cutting site in Xiangtangou in 1969 were of the typical uneven-aged forest,and their tree number proportion of small and middle diameter class were large in stands and the proportion was decreased with the diameter class increased. In comprison,the Wang'angou diameter distribution was more uniform than Xiangtangou. The small stem proportion was larger in Bayingxigou but it decreased more gently with the diameter increase,which suggested there was an obviously disturbance trace. The uniform angle index value of Wang'angou and Baiyingxigou was 0.489 and 0.487 respectively,and the pattern of horizontal distribution was random. The uniform angle index value of Xiangtangou was 0.520,and its distribution was of slight cluster,which exhitited the the community was still at early stage of succession. The tree species segregation of Wang'angou was maximum,followed by Xiangtangou and then Baiyingxigou. Their mean value of mingling was 0.598,0.542 and 0.451 respectively. Neighborhood comparison showed that Betula platyphylla and Pinus armandi were in different status in three different stands,and their status were decreased in order from Wang'angou,Xiangtangou to Baiyingxigou. However,Quercus aliena var. acuteserrata and Toxicodendron verniciflum had the same status in stands. Artificial disturbance had obviously effect on the forest structure in Baiyingxigou." @default.
- W2364093776 created "2016-06-24" @default.
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- W2364093776 date "2009-01-01" @default.
- W2364093776 modified "2023-09-23" @default.
- W2364093776 title "Spatial Structure Characteristic of Quercus aliena var. acuteserrata Natural Forest in Xiaolongshan" @default.
- W2364093776 hasPublicationYear "2009" @default.
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