麻栎在郴州石漠化地区的栽培试验

Cultivation Experiment of Quercus acutissima in Rocky Desertification Areas of Chenzhou

研究了不同造林树种在石漠化地区的生长情况和不同海拔高度及土壤母质类型下麻栎的生长情况,结果表明:在郴州石漠化地区,麻栎-柏木混交林中麻栎的树高生长量(210.87~216.87 cm)及地径生长量(22.57~28.80 mm)大于柏木的树高生长量(148.60~188.60 cm)及地径生长量(20.00~22.24 mm);同样,麻栎-光皮树混交林中麻栎的树高生长量(244.83~250.47 cm)及地径生长量(30.34~34.40 mm)也大于光皮树的树高生长量(180.80~235.60 cm)及地径生长量(20.49~29.10 mm),从总体上看麻栎的生长情况表现显著优于柏木及光皮树,而后二者是郴州石漠化地区复绿造林的常用树种,这也表明麻栎适合于郴州石漠化地区的造林推广。另外,栎的树高和地径生长量受到海拔高度和土壤母质类型等立地条件的显著影响,表现为海拔高度越高生长量越小、石灰岩优于砂砾岩优于花岗岩,而对地径生长量的影响会弱于对树高生长量的影响。

The conclusion was drawn by studying the growth of different afforestation tree species in rocky desertification areas and the growth of Quercus acutissima under different altitudes and soil parent material types.In the rocky desertification area of Chenzhou,the height growth(210.87~216.87 cm)and diameter growth(22.57~28.80 mm)of Quercus acutissima in the mixed forest of Quercus acutissima and Cupressus funebris Endl.are greater than those of Cupressus funebris Endl.(148.60~188.60 cm)and diameter growth(20.00~22.24 mm);Similarly,the height growth(244.83~250.47 cm)and ground diameter growth(30.34~34.40 mm)of Quercus acutissima in the mixed forest of Quercus acutissima and Swida wilsoniana(Wanger.)Sojak are also greater than those of height growth(180.80~235.60 cm)and ground diameter growth(20.49~29.10 mm)of Swida wilsoniana(Wanger.)Sojak.Overall,the growth of Quercus acutissima is significantly better than that of Cupressus funebris Endl.and Swida wilsoniana(Wanger.)Sojak,which are commonly used tree species for reforestation in the rocky desertification areas of Chenzhou.This also indicates that Quercus acutissima is suitable for afforestation and promotion in the rocky desertification area of Chenzhou.In addition,the tree height and ground diameter growth of Quercus acutissima are significantly influenced by site conditions such as altitude and soil parent material type.The higher the altitude,the smaller the growth.The limestone is better than glutenite and granite.The impact on ground diameter growth is weaker than that on tree height growth.