北方环境
北方環境
북방배경
INNER MONGOLIA ENVIRONMENTAL SCIENCES
2011年
8期
57-58,62
,共3页
桉树%速生林%土壤养分利用%林下植被%原因分析
桉樹%速生林%土壤養分利用%林下植被%原因分析
안수%속생림%토양양분이용%림하식피%원인분석
eucalyptus%fast - growing forest%soil nutrient utilization%undergrowth%analysis of causes
通过对桉树速生林基地的生态调查及监测，分析得出以前我国桉树速生林普遍存在地力衰退的问题，导致土壤肥力下降及目前桉树人工林地力衰退已经得到根本性的逆转的主要原因。速生林基地种植的桉树林林下植被与林缘、林外植被没有显著不同，特别是与桉树林地块相近的稀疏马尾松林林下植被以及荒坡植被相比，无论从植被覆盖度、植物种类、高度等看都呈现出增高、增多的趋势，而广东雨量丰富，桉树能同绝大部分林下植物共生。
通過對桉樹速生林基地的生態調查及鑑測，分析得齣以前我國桉樹速生林普遍存在地力衰退的問題，導緻土壤肥力下降及目前桉樹人工林地力衰退已經得到根本性的逆轉的主要原因。速生林基地種植的桉樹林林下植被與林緣、林外植被沒有顯著不同，特彆是與桉樹林地塊相近的稀疏馬尾鬆林林下植被以及荒坡植被相比，無論從植被覆蓋度、植物種類、高度等看都呈現齣增高、增多的趨勢，而廣東雨量豐富，桉樹能同絕大部分林下植物共生。
통과대안수속생림기지적생태조사급감측，분석득출이전아국안수속생림보편존재지력쇠퇴적문제，도치토양비력하강급목전안수인공임지력쇠퇴이경득도근본성적역전적주요원인。속생림기지충식적안수림림하식피여림연、림외식피몰유현저불동，특별시여안수임지괴상근적희소마미송림림하식피이급황파식피상비，무론종식피복개도、식물충류、고도등간도정현출증고、증다적추세，이엄동우량봉부，안수능동절대부분림하식물공생。
Soil fertility declines were common problems in Eucalyptus fast - growing forest of China. Based on ecological investigation and monitoring of eucalyptus fast - growing plantation, the analysis is carried out and main reason of soil fertility decline and fundamental reversal in current recession were concluded. There were no remarkable differences between undergrowth inside and outside or forest - fringed Eucalyptus forest in Eucalyptus fast - growing plantation. Particularly, the indices such as vegetation coverage, plant species number and plant height of undergrowth inside Eucalyptus forest were higher than those in sparse Pinus forest and barren field vegetation. Due to abun- dant rainfall, Eucalyptus tree can coexist with a majority of undergrowth species according to our investigation.
