云南地理环境研究
雲南地理環境研究
운남지리배경연구
YUNNAN GEOGRAPHIC ENVIRONMENT RESEARCH
2012年
5期
92-96
,共5页
九龙甸水源区%桉树林%云南松次生林%土壤特性
九龍甸水源區%桉樹林%雲南鬆次生林%土壤特性
구룡전수원구%안수림%운남송차생림%토양특성
Jiulongdian water source area%Eucalyptus forest%Pinus Yunnanensis forest%soil properties
通过参照本土云南松次生林土壤的性质,对外来的不同生长段桉树林土壤进行系统的物理性质分析,揭示桉树种植对土壤结构的改造过程。测定结果分析表明:相对于云南林次生林,不同生长段的桉树林土壤在容重、细颗粒含量上表现出较高值;而自然含水量、饱和含水量、总孔隙度、毛管孔隙度、有机质含量等值却很小。因此,桉树种植改变了本土植被下形成的土壤,导致土壤结构状况变差。
通過參照本土雲南鬆次生林土壤的性質,對外來的不同生長段桉樹林土壤進行繫統的物理性質分析,揭示桉樹種植對土壤結構的改造過程。測定結果分析錶明:相對于雲南林次生林,不同生長段的桉樹林土壤在容重、細顆粒含量上錶現齣較高值;而自然含水量、飽和含水量、總孔隙度、毛管孔隙度、有機質含量等值卻很小。因此,桉樹種植改變瞭本土植被下形成的土壤,導緻土壤結構狀況變差。
통과삼조본토운남송차생림토양적성질,대외래적불동생장단안수림토양진행계통적물이성질분석,게시안수충식대토양결구적개조과정。측정결과분석표명:상대우운남림차생림,불동생장단적안수림토양재용중、세과립함량상표현출교고치;이자연함수량、포화함수량、총공극도、모관공극도、유궤질함량등치각흔소。인차,안수충식개변료본토식피하형성적토양,도치토양결구상황변차。
By referring to the properties of local Secondary Pinus Yunnanensis forest soil, with system analysis on soil's physical properties of Eucalyptus forest, in the different growth stage, reveal the process of eucalyptus planting result in soil structure transformation. The determination results of analysis show that: relative to Secondary Pinus Yunnanensis forest, the bulk density, content of fine particles in different growth stag of eucalyptus forest soil showed higher values; However, the values of natural moisture content, saturated water content, total porosity, capillary porosity, organic matter content equivalents was small. So, the eucalyptus planting change the soil formed under native vegetation, resulted in deterioration of soil structure.