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Comparative study on active soil organic matter in Chinese fir plantation and native broad-leaved forest in subtropical China 被引量:21
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作者 WANGQing-kui WANGSi-long DENGShi-jian 《Journal of Forestry Research》 SCIE CAS CSCD 2005年第1期23-26,i002,共5页
Active soil organic matter (ASOM) has a main effect on biochemical cycles of soil nutrient elements such as N, P and S, and the quality and quantity of ASOM reflect soil primary productivity. The changes of ASOM fract... Active soil organic matter (ASOM) has a main effect on biochemical cycles of soil nutrient elements such as N, P and S, and the quality and quantity of ASOM reflect soil primary productivity. The changes of ASOM fractions and soil nutrients in the first rotation site and the second rotation site of Chinese fir plantation and the native broad-leaved forest were investigated and analyzed by soil sampling at the Huitong Experimental Station of Forestry Ecology (at latitude 26°48′N and longitude 109°30′E under a subtropical climate conditions), Chinese Academy of Sciences in March, 2004. The results showed that values of ASOM fractions for the Chinese fir plantations were lower than those for the broad-leaved forest. The contents of easily oxidisable carbon (EOC), microbial biomass carbon (MBC), water soluble carbohydrate (WSC) and water-soluble organic carbon (WSOC) for the first rotation of Chinese fir plantation were 35.9%, 13.7%, 87.8% and 50.9% higher than those for the second rotation of Chinese fir plantation, and were 15.8%, 47.3%, 38.1% and 30.2% separately lower than those for the broad-leaved forest. For the three investigated forest sites, the contents of MBC and WSOC had a larger decrease, followed by WSC, and the change of EOC was least. Moreover, soil physico-chemistry properties such as soil nutrients in Chinese fir plantation were lower than those in broad-leaved forest. It suggested that soil fertility declined after Chinese fir plantation replaced native broad-leaved forest through continuous artificial plantation. 展开更多
关键词 Active soil organic matter chinese fir plantation Native broad-leaved forest Soil nutrient elements
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Changes in Soil Carbon Pools Induced by Substitution of Plantation for Native Forest 被引量:44
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作者 XUQIUFANG XUJIANMING 《Pedosphere》 SCIE CAS CSCD 2003年第3期271-278,共8页
Changes in soil carbon pools under Chinese fir (Cunninghamia lanceolata) andbamboo (Phyllostachys pubescens) plantations substituted for a native forest (Quercus acutissima,Cyclobalanopsis glauca, Cas-tanopsis sclerop... Changes in soil carbon pools under Chinese fir (Cunninghamia lanceolata) andbamboo (Phyllostachys pubescens) plantations substituted for a native forest (Quercus acutissima,Cyclobalanopsis glauca, Cas-tanopsis sclerophylla, Platycarya strobilacea, Lithocarpus glaber) werestudied on the hills with acid parent rock and soils classified as red soils (Ferrisols) in Huzhou,Zhejiang Province of east China. It was found that total soil organic carbon (TSOC), easilyoxidisable carbon (EOC) and water-soluble organic carbon (WSOC) under bamboo plantation wereincreased, but microbial biomass carbon (MBC) was decreased. On the contrary, Chinese fir induceddeclines of all fractions of C including TSOC, EOC, WSOC and MBC. The percentages of the activefractions of soil C (EOC and WSOC) were increased in the plantations as compared to the nativebroad-leaved forest, but proportions of soil organic C as MBC were decreased. It could be concludedthat bamboo plantation had a great ability of not only fixing C but also accelerating soil C poolcycle, improving nutrient and microorganism activity; therefore, it is a good ecosystem and could berecommended for wide development. Chinese fir would shrink the soil C pool and deteriorate soilbiological fertility, so it did not benefit CO2 fixing and land sustainable utilization. 展开更多
关键词 BAMBOO broad-leaved forest chinese fir soil carbon
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杉木、火力楠纯林及其混交林生态系统C、N贮量 被引量:114
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作者 黄宇 冯宗炜 +3 位作者 汪思龙 冯兆忠 张红星 徐永荣 《生态学报》 CAS CSCD 北大核心 2005年第12期3146-3154,共9页
研究比较第2代连载杉木纯林、杉木与火力楠混交林以及火力楠纯林3种人工林生态系统的C、N贮量。结果表明,杉木与火力楠混交林生态系统C贮量要高于杉木纯林和火力楠纯林,而生态系统N贮量是火力楠纯林和杉木与火力楠混交林高于杉木纯林;... 研究比较第2代连载杉木纯林、杉木与火力楠混交林以及火力楠纯林3种人工林生态系统的C、N贮量。结果表明,杉木与火力楠混交林生态系统C贮量要高于杉木纯林和火力楠纯林,而生态系统N贮量是火力楠纯林和杉木与火力楠混交林高于杉木纯林;生态系统C和N贮量的空间分布基本一致,土壤层占主要部分,其次为乔木层,再次是根系,林下植被层和凋落层所占比例最小;相关分析表明,土壤C、N贮量分别和林下植被生物量以及与森林凋落物现存量之间都具有良好的线性关系,说明林下植被和森林凋落物对土壤C、N贮量有着深刻的影响。 展开更多
关键词 杉木人工林 混交林 碳贮量 氮贮量
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杉木细柄阿丁枫混交林涵养水源功能和土壤肥力的研究 被引量:43
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作者 陈绍栓 《生态学报》 CAS CSCD 北大核心 2002年第6期957-961,共5页
对 2 5年生杉木细柄阿丁枫混交林进行研究表明 :混交林对土壤的物理性质、养分含量、酶活性和涵养水源功能均有良好的作用。混交林林分持水量为 2 2 1 2 .84 t/ hm2 ,杉木纯林为 1 84 1 .6 2 t/ hm2。混交林土壤水稳性团聚体组成、孔隙... 对 2 5年生杉木细柄阿丁枫混交林进行研究表明 :混交林对土壤的物理性质、养分含量、酶活性和涵养水源功能均有良好的作用。混交林林分持水量为 2 2 1 2 .84 t/ hm2 ,杉木纯林为 1 84 1 .6 2 t/ hm2。混交林土壤水稳性团聚体组成、孔隙组成和水分状况均比纯林好 ;混交林土壤养分含量比纯林高 ,0~ 2 0 cm层有机质含量比纯林增加 80 .5 % ,全氮 ,全磷、水解性氮、速效磷和速效钾含量分别比纯林提高 2 8.8%、39.8%、32 .0 %、5 6 .6 %和 76 .8% ;混交林土壤酶活性比杉木纯林高 ,0~2 0 cm层转化酶、脲酶、酸性磷酸酶和过氧化氢酶活性分别比纯林增加 1 5 6 .1 %、72 .6 % .30 .0 %和 1 0 .3%。 展开更多
关键词 杉林细柄阿丁枫混交林 涵养水源功能 土壤肥力
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不同杉木混交模式土壤肥力及土壤蓄水量研究 被引量:24
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作者 姚庆端 《福建林学院学报》 CSCD 1996年第3期282-286,共5页
不同杉木混交模式的土壤肥力、土壤蓄水量的测定、分析和综合评价结果表明:杉木×米老排混交模式,林地土壤的水分状况、孔隙状况、土壤渗透性能均较杉木纯林的有所改善;土壤的养分含量和蓄水量比杉木纯林的有所提高。说明杉木... 不同杉木混交模式的土壤肥力、土壤蓄水量的测定、分析和综合评价结果表明:杉木×米老排混交模式,林地土壤的水分状况、孔隙状况、土壤渗透性能均较杉木纯林的有所改善;土壤的养分含量和蓄水量比杉木纯林的有所提高。说明杉木×米老排混交模式具有较强的培肥土壤和涵养水源作用,可在南亚热带林区推广。 展开更多
关键词 杉木 混交林 土壤肥力 土壤蓄水量
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