摘要
以长汀生态园和三洲乡2个试验点为例,采用挖穴施肥和条沟草带施肥法改造侵蚀地退化劣质马尾松林,并对劣质马尾松林的年抽梢生长、材积、覆盖度和地表草灌多样性进行分析。结果表明:经过3年改造,生态园挖穴施肥的马尾松林抽梢总长1.8 m,条沟草带施肥2.41 m,比对照分别增长0.9和1.51 m,三洲乡分别增长0.65和1.1 m;生态园挖穴施肥的材积增长20.5 m3/hm2,条沟草带施肥23 m3/hm2,比对照分别增长16.7和19.2 m3/hm2,三洲乡分别增长12.7和4.7 m3/hm2;生态园挖穴施肥的覆盖度为67%,条沟草带施肥78%,比对照分别增加19%和27%,三洲乡分别增长24%和32%;样地植物种数均增加10种以上,取得了明显的效果。说明通过改造,可以改变劣质马尾松林木生长,提高地表覆盖,同时促进植物多样性。
Two measures of caving ＆ fertilizing and grass strip-channel ＆ fertilizing were used to improve the inferior Pinus massioniana forest on the eroded land. The annual shoot growth, amount of wood volume, cover degree, and bio-diversity of grass and shrub of the inferior Pinus massioniana in two spots of ecological garden and Sanzhou in Changting county were analyzed. The results showed that after 3-year improvement, 1 ） the annual shoot growth of ecological garden was 1.8 m and 2.41 m with the ways of caving ＆ fertilizing and grass strip-channel ＆ fertilizing respectively,which was 0.9 m and 1.51 m larger than the control respectively, and 0.65 m and 1.1 m larger than the control respectively in Sanzhou. 2） the amount of wood volume was 20.5 m^3/hm^2 and 23 m^3/hm^2 with the way of caving ＆ fertilizing and grass strip-channel ＆ fertilizing respectively in the ecological garden, which was 16.7 m^3/hm^2 and 19.2 m^3/hm^2 larger than the control respectively, and 12.7 m^3/hm^2 and 4.7 m^3/hm^2 larger than the control respectively in Sanzhou. 3） the cover degree was 67% and 78 % with the ways of caving ＆ fertilizing and grass strip-channel ＆ fertilizing respectively in the ecological garden, which was 19 % and 27 % larger than the control respectively, and 24 % and 32 % larger than the control respectively in Sanzhou. 4） the species of plant increased more than 10 in the two spots. Results showed that the improvement of the inferior Pinus massioniana forest on the eroded land could promote the benefits of plant growth, ground cover degree, and biological diversity.
出处
《中国水土保持科学》
CSCD
2007年第4期62-65,共4页
Science of Soil and Water Conservation
基金
国家自然科学基金项目"南方花岗岩侵蚀山地生态恢复与重建后的生态环境效应"(40571096)
关键词
劣质马尾松林
条沟草带施肥
挖穴施肥
地表覆盖
植物多样性
inferior Pinus massioniana forest
grass strip-channel ＆ fertilizing
caving ＆ fertilizing
groundcover
biological diversity
