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標題: 不同海岸防風林台灣大蟋蟀若蟲數量之比較
作者: Liang, Sheng
Lin, Min-Ding
關鍵字: Windbreaks;防風林;Formosa giant cricket nymphs;First ecological benefit;Secondary ecological benefit;臺灣大蟋蟀若蟲;第一次生態效益;第二次生態效益
出版社: 臺中巿: 國立中興大學農學院
Project: 農林學報, Volume 58, Issue 2, Page(s) 107-119.
Three types of windbreaks formed from Melaleuca leucadendron, Pandanus tectorius, and Ficus religiosa, respectively, located on a slice belt, which known well as Golden Coast in Tainan City, and which between No.17 highway and sea, were served as the sampling areas for nymphs of Formosa Giant Cricket in order to understand the relationship between tree species and the number of the Cricket nymphs. The nymph number of the cricket is investigated during four different weather periods. The check dates performed on April 10, 16, 22, and 26, respectively. The first day data is to serve as a reference. The second period represents the fine weather condition, which conducted the check on April 16, while the third and fourth periods were done on April 22, and April 26, respectively, for starting rain and post-rainfall weather conditions. The resident condition is transitory within a windbreak site. The transfer rate is obtained from the increment of new dome created by the moving cricket over specified area. Both resident number and transfer rate depends on the tree species. The sequence of the resident number was Ficus religiosa with highest counts of 0.58, and Melaleuca Leucadendron with the lowest counts of 0.19 per m^2. The windbreak outer regions had the same sequence. The sequence of the body size is also followed the same order. To windbreaks, such a relationship depended on species is called as the First Ecological benefit. There is no difference between fine or wet weather from the view point of transfer rate, as counting performed on other dates. However, the sequence of favor ranking within the above three windbreaks are reversal. The highest as 133% for the outer area of Melaleuca Leucadendron and as low as 53% for the outer area of Ficus religiosa. Transfer rate shows the ecosystem functioning, called as the Secondary ecological benefit, of resident Cricket nymphs. This leads to a conclusion that within the windbreak with Melaleuca Leucadendron would have the highest density of Formosan Giant Cricket among the six areal conditions but with the lowest transfer rate at the same time.

Appears in Collections:第58卷 第02期

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