湖南林业科技
湖南林業科技
호남임업과기
HUNAN FORESTRY SCIENCE & TECHNOLOGY
2014年
2期
60-64
,共5页
吴天乐%戴成栋%袁巍%皮兵%马丰丰
吳天樂%戴成棟%袁巍%皮兵%馬豐豐
오천악%대성동%원외%피병%마봉봉
近自然林业%马尾松%次生林%土壤理化性质
近自然林業%馬尾鬆%次生林%土壤理化性質
근자연임업%마미송%차생림%토양이화성질
close-to-natural forestry%Pinus massoniana%secondary forest%soil physical and chemical properties
以慈利县二坊坪乡马尾松天然次生林为研究对象，比较其在不同经营模式下土壤理化性质的变化规律。结果表明：马尾松次生林经过1年的经营改造，Ⅱ处理（马尾松密度为900株/hm2）的土壤理化性质得到了改善，表现在土壤养分的提高，特别是土壤速效养分得到了较大的增加；而传统经营模式的土壤理化性质基本上所有指标均存在递减趋势。这说明合理的经营模式对马尾松次生林土壤肥力的维持和提高起到了积极作用，过大或过小的林分密度不利于土壤结构的改良和养分的循环与累积。
以慈利縣二坊坪鄉馬尾鬆天然次生林為研究對象，比較其在不同經營模式下土壤理化性質的變化規律。結果錶明：馬尾鬆次生林經過1年的經營改造，Ⅱ處理（馬尾鬆密度為900株/hm2）的土壤理化性質得到瞭改善，錶現在土壤養分的提高，特彆是土壤速效養分得到瞭較大的增加；而傳統經營模式的土壤理化性質基本上所有指標均存在遞減趨勢。這說明閤理的經營模式對馬尾鬆次生林土壤肥力的維持和提高起到瞭積極作用，過大或過小的林分密度不利于土壤結構的改良和養分的循環與纍積。
이자리현이방평향마미송천연차생림위연구대상，비교기재불동경영모식하토양이화성질적변화규률。결과표명：마미송차생림경과1년적경영개조，Ⅱ처리（마미송밀도위900주/hm2）적토양이화성질득도료개선，표현재토양양분적제고，특별시토양속효양분득도료교대적증가；이전통경영모식적토양이화성질기본상소유지표균존재체감추세。저설명합리적경영모식대마미송차생림토양비력적유지화제고기도료적겁작용，과대혹과소적림분밀도불리우토양결구적개량화양분적순배여루적。
Taken the secondary Pinus massoniana forest in Erfangping Village of Cili County as research object,the soil physical and chemical properties of secondary Pinus massoniana forest under different management modes were compared.The results showed that,after one year of management on secondary Pinus massoniana forest,the physical and chemical properties of soil with treatment II (stand density 900 plant/hm2 )were improved,which was manifested in the increase of soil nutrient content,especially the large increase of soil available nutrient content. While all indices of soil physical and chemical properties under conventional management exhibited a progressive decrease. This demonstrated that rational management played a positive role to maintain and improve soil fertility,and low or high stand density was not good for improvement of soil structure and cycle and accumulation of nutrient.
