However, due to the limited knowledge of genetic biodiversity, the understanding on the species in the forest and forest ecosystem diversity are still insufficient, which present some difficulties in evaluating the entire forest biodiversity [ 50 ].
Forest degradation, resource depletion, literature review on forest conservation of biodiversity, and resilience in ecosystems have become the major environmental issues.
Zhao, Beta diversity and functional diversity in an evergreen broad-leaved forest community in East China [dissertation]Zhejiang University, Hangzhou, China, The system has proven to be operable; literature review on forest conservation, there are still some problems associated with the evaluation index system, such as incompleteness and subjectivity of the weight of the indicators.
On the other hand, due to the lack of effective and scientific method of indicator selection, most indices were chosen based on the experience of the researchers, which make the selection prone to be subjective. Over the past two decades, the rapid industrialization and urbanization processes placed heavy pressure on forest resources in China.
The objectives of this paper are to briefly introduce the basic information of forest resources in China and then review the evaluation indicators and forest biodiversity index systems in related studies. A few studies have been conducted to analyze forest biodiversity using beta diversity indices in China.
Some studies applied or to calculate species dominance [ 2829 ]. Therefore, the biodiversity system is still not flawless.
A Review of Forest Resources and Forest Biodiversity Evaluation System in China
Literature review on forest conservation is an open access article distributed under the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In addition, species richness can be affected by the size of the sample plots and ignores the difference of the contribution between common species and rare species to community diversity; therefore it should be used in combination with other indices e.
The results showed that a lot of studies on forest biodiversity have been conducted mostly at landscape or stand level in China and the commonly used biodiversity indicators were identified and compared.
Species dominance, evenness, and diversity are closely related to each other, which reflect the composition, structure, and levels of a literature review on forest conservation. Several principles froest be applied while selecting the indices, including appropriateness of each index for the data, discriminant ability of the index, statistical comparability, and widespread utility of the index [ 52 ]. The PSR model provides a classification into indicators of environmental pressures, indicators of environmental conditions cinservation and indicators of societal responses.
It is noted that the weights of the indices were determined based on the viewpoints of experts and the problem of data deviation was not truly solved. View at Google Scholar D. The following findings are suggested: It is also noted that the literatture plantations of lirerature trees accounts for most of the improvement in forest cover.
The results showed that a lot of studies on forest biodiversity have been conducted mostly at landscape or stand level in China and the commonly used biodiversity indicators were identified.
Notify me of new posts via email. View at Google Scholar X. The implementation of the logging ban has kept the nature forests away from the issue literature review on forest conservation overlogging, but sharpened the conflicts between timber products literature review on forest conservation and demand.
Forest degradation, resource depletion, loss of biodiversity, and resilience in ecosystems become the major environmental issues.
International Journal of Forestry Research
The oj broadleaved forest is literature review on forest conservation zonal type in moist subtropical China. Alpha diversity refers to the diversity within a particular area or ecosystem conservqtion is usually expressed by the number of species i.
They are often home to many rare species, threatened species, and endangered species of plants and animals. They indicated that there was a significant difference between tree species diversity in gaps and under canopy. You can leave a responseor trackback from your own site.
It should be noted that Pielou evenness index is inappropriate for comparisons of samples where species richness varies considerably literature review on forest conservation 27 ]. Levels of biodiversity may be higher or lower in old-growth forests compared to that in second-growth forests, depending on specific circumstances, environmental variables, and geographic variables [ 38 ].