炼山对土壤理化性质的影响

THE EFFECT OF BURNING OFF ON THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF SOIL

本文研究了炼山对采伐迹地土壤理化性质的影响。根据采伐剩余物的堆高(或重量)将炼山分为4组处理,按完全随机区组法排列在山坡的不同部位。试验所得结果经多功能方差显著性分析表明,土壤毛管孔隙度、容重、土壤有机质、全氮量、速效养分、C/N、pH值、水解性酸、阳离子交换量、盐基总量和饱和度发生变化。

Burning off, a measure of forest management, has been adopted broadly in the southern forest-region of China for clearing slash. This paper has studied the effect of burning off on the physical and chemical characteristics of soil. The slash pile height and weight were treated as four levels which were arranged at the different slope positions by randomized complete-block design. With the multi-functional variance test, it has been revealed that the capillary porosity, bulk density, organic matter, total nitrogen, available nutrients, C / N, pH, hydrolytic acid, exchangeable cation capacity, total base and base saturation were changed by burning off.