环境科学与管理
環境科學與管理
배경과학여관리
ENVIRONMENTAL SCIENCE AND MANAGEMENT
2015年
6期
170-173
,共4页
林火%土壤质量%主成份分析%评价
林火%土壤質量%主成份分析%評價
림화%토양질량%주성빈분석%평개
forest fire%soil quality%principal component analysis%evaluation
以大兴安岭高寒区典型火烧迹地为研究对象，选取土壤表层（0 cm～5 cm）枯落层厚度、土壤含水率、午间均温、土壤容重、水稳性团聚体、pH等12项表征土壤物理、化学、生物学性质的指标，运用主成份分析方法，对森林土壤质量进行评价。结果显示：林火对所有指标的影响度均达到显著水平（ρ＜0.01）。对照林地综合得分（0.194）明显大于火烧迹地综合得分（0.101），表明林火短期内可使森林土壤质量降低。
以大興安嶺高寒區典型火燒跡地為研究對象，選取土壤錶層（0 cm～5 cm）枯落層厚度、土壤含水率、午間均溫、土壤容重、水穩性糰聚體、pH等12項錶徵土壤物理、化學、生物學性質的指標，運用主成份分析方法，對森林土壤質量進行評價。結果顯示：林火對所有指標的影響度均達到顯著水平（ρ＜0.01）。對照林地綜閤得分（0.194）明顯大于火燒跡地綜閤得分（0.101），錶明林火短期內可使森林土壤質量降低。
이대흥안령고한구전형화소적지위연구대상，선취토양표층（0 cm～5 cm）고락층후도、토양함수솔、오간균온、토양용중、수은성단취체、pH등12항표정토양물리、화학、생물학성질적지표，운용주성빈분석방법，대삼림토양질량진행평개。결과현시：림화대소유지표적영향도균체도현저수평（ρ＜0.01）。대조임지종합득분（0.194）명현대우화소적지종합득분（0.101），표명림화단기내가사삼림토양질량강저。
Taking the typical alpine area of greater Xing'an mountains as the research object, this study selected 12 physical, chemical or biological indexes in the soil surface (0~5 cm), including litter thickness, soil moisture, midday average tempera-ture, soil bulk density, water stable aggregates, pH, to evaluat the burned soil quality using principal component analysis.The results showed that the impact of forest fire on all indicators have reached a significant level (ρ <0.01 ) .The score of control group(0.194) was significantly higher than that of forest fire (0.101), which showed that forest soil quality could be decreased by forest fire in a short time.
