摘要
对不炼山、定植2年生容器大苗、造林后不抚育的低碳型营林方式林地土壤物理化学性质进行了长期定位观测。结果表明:低碳型营林与传统型营林(炼山、1年生裸根苗、造林后抚育)幼林材积生长量无显著性差异,均为每年13. 5 m^3·hm^(-2)左右;低碳型营林土壤容重一直保持在林地清理前的水平,造林当年土壤含水率下降5. 3%,土壤有机质含量下降16. 1%,而传统型营林土壤容重增加21. 9%、土壤含水率下降20. 5%、土壤有机质含量下降30. 6%。可见低碳型营林相对传统型营林对保持土壤结构、水分和肥力有显著作用。
The long-term location observation of woodland soil physical and chemical properties was carried out for the low carbon type of no controlled burning,2-year-old container seedlings and no tending after afforestation. The research results show that：there was no significant difference in volume growth between the low carbon type and the traditional forest（controlled burning,1-year-old naked seedlings,tending after afforestation）,both is each year 13. 5 m3·hm^-2 around. The soil bulk density of low carbon type forest has been maintained at the level before the forest clearing,soil water content decreased by 5. 3% in the year of afforestation, and soil organic matter decreased by 16. 1%,The traditional type corresponding increase 21. 9%,decrease 20. 5%,decrease 30. 6%. The low carbon type of forest has a significant effect on maintaining soil structure,water and fertility.
作者
徐清乾
张勰
黄帆
徐少东
李先政
谭永康
XU Qingqian;ZHANG Xie;HUANG Fan;XU Shaodong;LI Xianzheng;TAN Yongkang(Hunan Academy of Forestry,Changsha 410004,China;Key Lab of Non-wood Forest Nurturing and Protection of National Ministry of Education,Central South University of Forestry and Technology,Changsha 410004,China;Tian＇e Hill State-owned Forest Farm,Chengzhou 423406,China)
出处
《湖南林业科技》
2018年第5期32-35,共4页
Hunan Forestry Science & Technology
基金
速生人工林绿色产业链循环增效关键技术创新与应用(2017NK1010)
关键词
土壤
理化性质
低碳
营林方式
soil
physicochemical property nutrition
low carbon
forest ways
