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中国西部3个亚高山森林土壤有机层和矿质层碳储量和生化特性



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基金项目:国家自然科学基金资助项目(5$6"#5"7,8$!$!$#$,5$!###5$9$6);国家“十一五”重大科技支撑计划资助项目(!$$:;%&$#%##);四
川省重大应用基础研究计划资助项目;四川省青年科技基金资助资助项目($"<=$$7#);四川农业大学人才引进资助项目
收稿日期:!$$:>$7>#9;修订日期:!$$">$5>!6
作者简介:杨万勤(#8:8 ?),男,四川乐山人,博士,副教授,主要从事土壤生态与全球变化研究2 (>@AB1:CADEFGH 3BI2 A32 3D
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中国西部 9 个亚高山森林土壤有机层和
矿质层碳储量和生化特性
杨万勤#,!,冯瑞芳#,张‘ 健#,王开运!
(#2四川农业大学林学院,雅安‘ :!9$#6;!2中国科学院成都生物研究所,成都 :#$$6#)
摘要:为了解土壤和植被界面的有机碳库和生化特性,分别将以云杉(!"#$% &’(&’($% VAL4MQL)(-Y)、冷杉()*"$+ ,%-./"%/% RMJTMQ
[ (2 W2 OB1L0D)(YY)和白桦(0$1’2% &2%13&4322% -PKA3aMS)(;Y)为优势树种的 5 个亚高山森林地表有机层()*)分成新鲜凋落
物层(**)、半分解层(Y*)和分解层(W*),并同步测定了有机层和矿质土壤层(V-)的有机碳()&)储量、微生物生物量碳
(&@B3)、微生物生物量氮(.@B3)及转化酶、过氧化氢酶、脱氢酶和多酚氧化酶活性。云杉林、冷杉林和白桦林土壤有机层的有机
碳储量分别为 !82 57 VE J@ b! c #2 !7 VE J@ b!、!!2 " VE J@ b! c #2 #! VE J@ b!和 72 :5 VE J@ b! c $2 89 VE J@ b!,分别为总有机
碳储量的 :!2 !d、952 9d和 5:2 :d。云杉林、冷杉林和白桦林土壤有机层和腐殖质层分别储存了 8!2 7d、882 :d和 "72 "d的有
机碳。所有林型中,W*具有最高的细菌数量、&@B3和 .@B3及过氧化氢酶活性,Y*具有最高的真菌、放线菌数量及转化酶、脱氢酶
和多酚氧化酶活性。微生物数量、微生物生物量和酶活性的垂直分布格局意味着 )* 是土壤和植被之间最活跃的生态界面
之一。
关键词:亚高山森林;碳库;微生物数量;微生物生物量;酶活性
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参考文献:
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[67]8 鲁如坤著& 土壤农化分析方法& 北京:中国农业科技出版社,6777& 62 d 65,2J7 d 2L3&
[26]8 关松荫著& 土壤酶及其研究法& 北京:农业出版社,67KJ& 4Q4&
[2L]8 齐泽民,王开运,宋光煜,等& 川西亚高山箭竹群落森林地表生化特性& 生态学报,2335,25 (J):6243 d 624J&
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QJ658 63期 8 8 8 杨万勤8 等:中国西部 4 个亚高山森林土壤有机层和矿质层碳储量和生化特性 8