樟子松与其他10种凋落叶混合分解的养分释放特征

doi:10.11707/j.1001-7488.20140721

林业科学 ›› 2014, Vol. 50 ›› Issue (7): 149-156.doi: 10.11707/j.1001-7488.20140721

樟子松与其他10种凋落叶混合分解的养分释放特征

张晓曦¹, 刘增文^2,3, 邴塬皓⁴, 朱博超², 杜良贞⁴, 祝振华²

1. 西北农林科技大学水土保持研究所杨凌 712100;
2. 西北农林科技大学资源环境学院杨凌 712100;
3. 农业部西北植物营养与农业环境重点实验室杨凌 712100;
4. 西北农林科技大学林学院杨凌 712100

收稿日期:2013-03-22 修回日期:2014-06-08 出版日期:2014-07-25 发布日期:2014-07-04
基金资助:
国家自然科学基金项目（31070630）；西北农林科技大学大学生创新实验计划项目（2010年）。

Nutrient Release Characteristics during Decay of Mixed Leaf Litter of Pinus sylvestris var. mongolica with Other 10 Tree Species

Zhang Xiaoxi¹, Liu Zengwen^2,3, Bing Yuanhao⁴, Zhu Bochao², Du Liangzhen⁴, Zhu Zhenhua²

1. Institute of Soil and Water Conservation, Northwest A&F University Yangling 712100;
2. College of Natural Resources and Environment, Northwest A&F University Yangling 712100;
3. Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture Yangling 712100;
4. College of Forestry, Northwest A&F University Yangling 712100

Received:2013-03-22 Revised:2014-06-08 Online:2014-07-25 Published:2014-07-04
Contact: 刘增文

摘要/Abstract

关键词: 樟子松, 凋落叶混合分解, 养分释放

Abstract:

Establishment of mixed forests is an essential way to improve the stability of forest ecosystem. In order to select appropriate tree species for mixing with Pinus sylvestris var. mongolica, leaf litters from P. sylvestris var. mongolica and other 10 tree species were collected. The litter samples were cleaned, air-dried, and then cut and mixed with 1:1 ratios. The mixed litters were placed in nylon litterbags and incubated in the potting soil for a 345-day decay period under constant temperature and moisture in lab. The weight and concentrations of 8 nutrient elements in the litters before and after the decay were determined. The results showed: the leaf litter of P. sylvestris var. mongolica had the poorest substrate quality with the highest C concentration and C/N ratio, but the lowest N concentration; The mixed leaf litter decay had greater impacts on microelement release than on macro-elements; Mixture of leaf litters from Platycladus orientalis, Larix principis-rupprechtii, Ulmus pumila or Hippophae rhamnoides with that from P. sylvestris var. mongolica accelerated the release of C, N, P, Cu, Zn, Fe and Mn; Mixture of leaf litters from Populus simonii with that from P. sylvestris var. mongolica accelerated the release of N, P, Cu, Zn, Fe and Mn; Mixture of leaf litters from Caragana microphylla with that from P. sylvestris var. mongolica accelerated the release of C, N, P, Cu and Fe, and mixture of leaf litters from Amorpha fruticosa with that from P. sylvestris var. mongolica accelerated the release of N, P, Cu and Zn. According to a comprehensive analysis, mixed litters of P. sylvestris var. mongolica respectively with L. principis-rupprechtii, H. rhamnoides, P. orientalis and U. pumila showed positive impacts on decay and nutrient release, but negative influences when mixed with R. pseudoacacia, B. platyphylla and Q. liaotungensis.

Key words: Pinus sylvestris var. mongolica, mixed leaf litter decay, nutrient release

中图分类号:

S714.2

张晓曦, 刘增文, 邴塬皓, 朱博超, 杜良贞, 祝振华. 樟子松与其他10种凋落叶混合分解的养分释放特征[J]. 林业科学, 2014, 50(7): 149-156.

Zhang Xiaoxi, Liu Zengwen, Bing Yuanhao, Zhu Bochao, Du Liangzhen, Zhu Zhenhua. Nutrient Release Characteristics during Decay of Mixed Leaf Litter of Pinus sylvestris var. mongolica with Other 10 Tree Species[J]. Scientia Silvae Sinicae, 2014, 50(7): 149-156.

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樟子松与其他10种凋落叶混合分解的养分释放特征

Nutrient Release Characteristics during Decay of Mixed Leaf Litter of Pinus sylvestris var. mongolica with Other 10 Tree Species

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