油松与其他树种枯落叶混合分解对养分释放的影响
文献类型:期刊论文
作者 | 张晓曦 ; 刘增文 ; 杜良贞 ; 祝振华 ; 许加 |
刊名 | 水土保持学报
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出版日期 | 2013 |
卷号 | 27期号:01页码:116-05 |
关键词 | 油松 Pinus tabulaeformis 枯落叶混合分解 mixed leaf litter decomposition 养分释放 nutrient release |
其他题名 | Impacts of Mixed Leaf Litter Decomposition of |
中文摘要 | 以黄土高原数量最多、分布最广的针叶人工林树种油松为对象,研究采集油松及其他拟混交的9个树种的当年枯落叶,以无林荒草地腐殖质层土壤作为分解介质,在室内将油松分别与不同树种枯落叶以一定比例混合后装入尼龙网袋并埋入盛土培养钵中,恒温恒湿下连续进行345d分解培养试验,测定分解前后枯落叶质量及养分含量的变化,探讨油松与其他树种枯落叶混合分解对养分释放的影响。结果表明:(1)在所有10个树种中,油松枯落叶的N、P和K含量最低,而C含量、C/N和C/P最高,属于枯落叶基质质量较差的树种;油松枯落叶除了K、Ni之外,其他C、N、P、Cu、Zn、Cd均释放最慢;在枯落叶分解过程中,大量元素整体上较微量元素容易释出,其中,大量元素中K最活跃而易释出,P比较迟钝而难释出,C、N居中并具有一定的释出同步性;微量元素中Zn最为活跃而易释出,其次是Cd和Cu,Ni一般较迟钝而难释出。(2)不同树种枯落叶分别与油松枯落叶混合分解对各种养分释放有明显促进作用的分别为:落叶松和白桦对C;柠条、白桦、白榆、沙棘和辽东栎对N;小叶杨、白桦、刺槐、沙棘和柠条对P;白桦、沙棘和紫穗槐对Cu;白桦和紫穗槐对Zn;白榆对Ni;落. |
英文摘要 | This study took the typical planted forest of Pinus tabulaeformis which had the most amount and wide distribution in Loess Plateau as objective,through gathering current year fallen leaf litter of P.tabulaeformis and other 9mixed tree species,and humus soil(0-20cm)of no forested grass land as medium,incubation of mixed leaf litter decay of P.tabulaeformis with other trees respectively had been carried out for 345dunder the same condition of temperature and moisture with the method of nylon mesh bag buried in soil.Based on measuring the change of litter masses and nutrient contents,impacts of mixed leaf litter decomposition of P.tabulaeformis with other trees on nutrient release were studied.The results showed that:(1)Among the 10tree species,leaf litter of P.tabulaeformis had poor substrate quality characteristic as the least N,P and K contents,the most C content and C/N,C/P.Except K and N,other nutrients of C,N,P,Cu,Zn and Cd in leaf litter of P.tabulaeformis released the most slowly.Among the nutrients,macronutrients were more active and easy released than micronutrients.In macronutrients,K was the most active and easy released, while P was generally dull and difficult released,and C and N were moderate and often synchronous in releasing.In micronutrients,Zn was the most actively and the easiest released,followed by Cd and Cu,but Ni was dully and difficultly released.(2)Leaf litters which showed obvious promoting effects on nutrient releasing when mixed with P.tabulaeformis included:L.principis-rupprechtii and B.platyphylla on C; C.microphylla,H.rhamnoides,U.pumila,B.platyphylla and Q.liaotungensis on N;P.simonii, B.platyphylla,R.pseudoacacia,H.rhamnoides and C.microphylla on P;B.platyphylla,H.rhamnoides and A.fruticosaon Cu;B.platyphyllaand A.fruticosaon Zn;U.pumilaon Ni;L.principis-rupprechtii, R.pseudoacacia,B.platyphyllaand U.pumilaon Cd.(3)According to the comprehensive analysis on total nutrients releasing,among the tree species mixed leaf litter with P.tabulaeformis,B.platyphyllashowed obvious promoting effects on nutrient release,followed by L.principis-rupprechtii and H.rhamnoides.P.simonii showed obvious inhibitive effects on nutrient release,followed by Q.liaotungensis and C.microphylla. |
语种 | 中文 |
公开日期 | 2014-10-24 |
源URL | [http://ir.iswc.ac.cn/handle/361005/5604] ![]() |
专题 | 水土保持研究所_水保所知识产出(1956-2013) |
推荐引用方式 GB/T 7714 | 张晓曦,刘增文,杜良贞,等. 油松与其他树种枯落叶混合分解对养分释放的影响[J]. 水土保持学报,2013,27(01):116-05. |
APA | 张晓曦,刘增文,杜良贞,祝振华,&许加.(2013).油松与其他树种枯落叶混合分解对养分释放的影响.水土保持学报,27(01),116-05. |
MLA | 张晓曦,et al."油松与其他树种枯落叶混合分解对养分释放的影响".水土保持学报 27.01(2013):116-05. |
入库方式: OAI收割
来源:水土保持研究所
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