杉木幼林对退化系统中显热和潜热能的调节及生态恢复  

Studies on adjustment effects of young Chinese fir forest to apparent heat and latent heat energy in degenerative ecosystem,and ecological restoration

作　　者：康文星[1,2,3] 沙甲先[1] 吴耀兴[1,4] 何介南[1] 

机构地区：[1]中南林业科技大学,湖南长沙410004 [2]南方林业生态应用技术国家工程实验室,湖南长沙410004 [3]国家野外科学观测研究站,湖南会同418307 [4]湖南科技学院,湖南永州425100

出　　处：《中南林业科技大学学报》2011年第5期19-25,共7页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业科研专项(201104009);湖南省自然科学基金项目(09JJ3031)

摘　　要：以连续4年定位测定数据为基础,应用空气动力学和大气热力学原理,对采伐迹地营造杉木人工林后,幼林对退化系统环境中的显热与潜热能的调节和生态恢复进行研究。结果表明:2年生幼林对显热能的调节已恢复到成林的16.2%,3年生时其能力恢复到38.5%,4年生时,已接近成林的60%;对潜热能的调节,2年生时已显示出成林11.4%的调节作用,3年生时已达到成林22.4%的水平,4年生时已恢复到成林的34.3%;幼林对显热能的调节恢复速率比潜热能快。采伐迹地营造植被后,植物就开始实施对周围环境的调节,使退化生态系统的物质和能量进行良性循环,结构与功能相互协调发展。杉木对小环境的改善,主要是通过林木来影响各种基本环境能量的空间分配和大小,调节各种基本环境能量的比例来完成的。Basing on the continuous and local observation 4-year data and applying the aerodynamic and atmospheric thermodynamic principles,the adjustment effects of young Chinese fir forest to the apparent heat and latent heat energy of the deteriorating system and its ecological restoration were studied,which was deforested and then planted Chinese fir.The results show that the adjustment effect of 2-year-old young Chinese fir forest to apparent heat energy had been restored to 16.2% of mature stands,and that of 3-year-old young stands had recovered to 38.5%,with 4-year-old closed to 60% of mature stands.In regard to the regulating effect to latent heat energy,2-year-old young stands had reached the level of 11.4 % of mature stands,with 3-year-old was 22.4%,and 4-year-old forest was 34.3%.From the above,we could see that the rate of the restoration of regulating effect of young forest to apparent heat energy was faster than that of the latent heat energy.After vegetation was planted on a logging slash,the plants began to regulate surrounding environment,so that the material and energy of the degenerative ecosystems achieved a virtuous cycle,and the structure and function developed harmoniously.Overall,the microenvironment was improved by Cunninghamia lanceolata influencing space allocation and amount of different basic environmental energy and regulating the proportion of different basic environmental energy.

关 键 词：退化生态系统 植被 杉木幼林 显热 潜热 生态恢复 

分 类 号：S718.57[农业科学—林学] S718.557