检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:陈祥伟[1] 魏占才[1] 曹文英 吴月仙 张国珍[1]
机构地区:[1]东北林业大学,黑龙江省牡丹江林业学校,黑龙江省齐齐哈尔林业学校
出 处:《东北林业大学学报》1995年第5期29-36,共8页Journal of Northeast Forestry University
基 金:国家自然科学基金;委主任基金
摘 要:通过对东北林业大学老山人工林实验站红松、樟子松、落叶松人工林小气候长期定位观测资料系统分析,针对东北地区特点研究了针对人工林非生长季和生长季的气候效益。结果表明:(1)人工林气温效益显示出非生长季缓冷保温作用大于生长季缓热降温作用的特点。非生长季红松林内气温增加24.3%、落叶松增加21.6%,樟子松增加10.8%、差异达显著水平。(2)对空气湿度的影响、以生长季增加相对湿度最为显著、其中樟子松、落叶松和红松人工林内,分别提高7.6%、5.6%和4.6%这对促进林木高生长极为有利。(3)人工林内地温效益,非生长季和生长季均极为显著,而且非生长季增温效益高于生长季降温效益,平均增温为24.3%、为翌春林木生长累积充足养分创造了条件。According to the climatic characters in Northeast of China, microclimatic effects of conifer plantations both in nongrowing seasn (from May to September)and growing season were presented by systematic analysis on observation data collected from Korean pine,Mongolian scots pine and Dahurian larch plantations on Laoshan Experimental Station attached to Northeast Forestry University.Results show that;(1)The effect of air temperature in plantations get increased more significant in growing season than that decreased in growing season. The air temperature increased relatively 24. 4% in Korean plantations.(2) The effect of air humidity in growing season get significant level. in which humidity in Mongolian scots pine plantation get increased 7. 6, 5. 6 and 4. 6 in Dahurian larch and Korean pine plantations. This is very profitable for increasing the height increment.(3) Soil temperature effect of plantations get significant level both in nongrowing season. meanwhile.the effect of increasing in nongrowing season is bigger than decreasing in growing season. The everage value of increasing effect is about 24.3%,it makes enough condition for roots to absorb nutrition to promote the tree growth next spring.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.221.100.57