摘要
于 1998年 4月至 1999年 3月采用定点测定和面上调查相结合的方法 ,开展大气污对珠江三角洲森林生长及其土壤酸碱性和肥力特性的影响研究。初步结果表明 :大气污染引起珠江三角洲地区发生大面积、高频率的酸雨 ,主要的污染物有SO2 、NOx、悬浮颗粒物等 ;随着污染程度的增大 ,森林土壤pH值降低 ,SO2 - 4和Al3+质量浓度增大 ;马尾松、湿地松叶片叶绿素含量降低 ,生长衰退甚至死亡 ;但不同树种对大气污染敏感程度不同 ,种植马占相思比马尾松更能增加林地对酸雨缓冲力和提高土壤肥力。
The effect of atmosphere pollution on forest growth and soil characteristics was investigated in Pearl River Delta of China from 1998 to 1999. The preliminary results showed that the atmosphere contaminator mainly contained SO\-2, NO\-\%x\% and suspended granule. Which caused large area acid rain with high frequency. As pollution became more serious, there were decreases in pH value and increases in the content of SO\+\{2-\}\-4 and Al\+\{3+\} in forest soil; the chlorophyll concentration also would decrease both in \%Pinus massoniana\% Lamb. and\% Pinus elliottii\% Engelm., and their growth declined, even died. But their sensitivity of atmosphere pollution varied in species. Compared with \%Pinus massoniana\% Lamb., planting with \%Acacia mangium\% Willd. Would increased the land buffer capability relatively and improved soil fertility preferably.
出处
《生态科学》
CSCD
2001年第1期11-16,共6页
Ecological Science
基金
广东省自然科学基金!资助项目 ( 960 515)
关键词
大气污染
森林生长
土壤性质
珠江三角洲
atmosphere Pollution
growth of forest
characteristic of soil
Pearl River Delta
