| In this study,seven stand locations were choose from Shenzhishan and Daxiagu park in Wuyishan region, these represent mixed forest of conifer and broad-leaved trees by different people jamming to the evergreen broad-leaved forest succession after the different intermediate stages. Different types of conifer succession process to locate and survey research, in general, understand the characteristics of forest stands, biomass, spatial distribution and variation of characteristics, to reveal the succession of conifer Wuyishan characteristics and The update rules, the maximum degree of optimization of Wuyishan mixed coniferous economic and ecological value. The main conclusions of this study include:1. The study area, seven standards to the main hard mixed hardwood and coniferous trees of the conifer, which plots 1, 3, 4 absolute advantage for the coniferous trees,and plots 5,6,7,compared with hardwood advantage, including 2 like the most obvious advantage to hardwood.2. Mixed coniferous tree species in the dominance of a higher percentage share of basal area,including 1 standard to the highest proportion in the pine,67.3%,while the standard 3 to the pin,wide basal area of trees accounted for the largest percentage difference (P:W = 9:1),coniferous and mixed with the same degree.3. The stand diameter distribution of a certain pattern, which is in the middle of the forest trees diameter class distribution of the largest diameter class from the middle class to the most trails and the largest diameter class distribution of the number of trees decreased. The standard to stand diameter distribution mainly single-Mountain-like curve, mainly showed a left or right asymmetric distribution.4. In this study for the mixed coniferous forest stands fit the diameter of the qualified rate, to reach 85.7%, can be seen mixed coniferous forest diameter distribution can be described using the Weibull distribution, the fit is better.5. The distribution of forest tree height and diameter distribution of the law of distribution is similar, in the middle of the diameter class distribution of forest trees up, but most trails to the first and the largest diameter class distribution of the number of trees decreased. From a number of column diameter class distribution point of view, the standard to stand the tree height distribution of the main single-Mountain-shaped curve, mainly showed a left or right asymmetric distribution.6. After fitting found that tree height and diameter, stand a good correlation between the curve fitting equation y = 0.0022x2 + 0.7377x + 1.3687 (R2 = 0.9056), it's fit well. Which reflect the tree height increases with the diameter variation.7. Mixed coniferous forest in the higher biomass, the total average biomass of 201.36 t/hm2. One tree layer biomass in the largest proportion of the mean achieved 170.41 t/hm2, accounting for 85.48% of total biomass;biomass of understory vegetation layer is 18.62 t/hm2, occupy the ecological system of 9.34% of total biomass;litter biomass is 10.36 t/hm2, accounted for 5.18% of total biomass.8. The highest tree biomass allocation coefficient for the trunk, an average of 63.11% ; and branches, followed by biomass allocation coefficient, reaching 23.55%;leaf biomass distribution coefficient depends on wood species are coniferous or hardwood, hardwood (up to 5.68%) was significantly higher than the distribution coefficient of coniferous wood (up to 1.94%); bark and roots are accounted for some 4.97% and 3.80% of the allocation ratio. The standard to different dominant species of tree biomass allocation ratio varies greatly; it further illustrates the complexity of the composition in the mixed coniferous forest biomass.9. According to the theory of knowledge, experience and literature, we selected trees diameter (D), tree height (H) and (D2H) as the independent variable on the individual tree biomass were fitted to get the best of their mode. |
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