摘要
用限制白蚁活动的方法进行野外对比试验,研究白蚁对人工林凋落物自然消耗的作用,为研究系统的能量循环提供重要的基础资料。 试验表明。1)枯枝落叶年消耗量与白蚁的几种数量统计数值成正相关,与其他土壤动物的数量无显著关系;2)三个试区的年总凋落量分别为1089.6克/米~2、550.3克/米~2和541.3克/米~2;总自然消耗率为94.31％、97.0％和82.07％;3)由白蚁消耗部分各占总凋落量的40.8％、24.5％和15.3％。
1. The experiment was carried out in the locality in coastland of Guangdong province, a part of northern edge of the tropics. The tested araes were three varied artificial broad leaf mixed forests. There were varied density of termites. The weight of litter consumed by termites was obtained by comparison of the tested results of both groups, a group of test based on violation by termites and a group of control. The litter was added to all test installations monthly in a quantity close to the natural quantity of of litter fall. The main species of termite was Macrotermes barneyi.2. The annual decomposed quantity of soil litter was in a positive correlation with the following statistics of termites:density index, met times in the control tests, and the index of trunk with the sheetings number.3. The annual litter fall in three tested areas were 1089.6, 550.3 and 541.3 g/ m2, respectively, and the annual decomposed lates were 94.31%, 97.0% and 82.07%, respectively.4. The annual feeding rates of soil litter by termites were 40.8%, 24.5% and 15.3% respectively. Their annual feeding weights, converted into the quantity of the natural litter fall, were 444.5g/m2, 135.0g/m2 and 82.8g/m2, resectively.The results showed that the termites play a significant role in the processes of energy conversion and material circulation for this kind of mixed forest mainly composed of Acacia auriculaefomis, a species of tough leaf tree.
出处
《生态学报》
CAS
CSCD
北大核心
1990年第2期173-176,共4页
Acta Ecologica Sinica
