沙地樟子松带状混交林土壤碳氮磷化学计量特征

doi:10.13287/j.1001-9332.201909.001

应用生态学报 ›› 2019, Vol. 30 ›› Issue (9): 2883-2891.doi: 10.13287/j.1001-9332.201909.001

沙地樟子松带状混交林土壤碳氮磷化学计量特征

王凯^1*, 雷虹¹, 石亮², 张日升^2,3, 宋立宁⁴

¹辽宁工程技术大学环境科学与工程学院, 辽宁阜新 123000;
²辽宁省沙地治理与利用研究所, 辽宁阜新 123000;
³辽宁章古台科尔沁沙地生态系统国家定位观测研究站, 辽宁阜新 123000;
⁴中国科学院沈阳应用生态研究所, 沈阳 110016

收稿日期:2019-04-25 出版日期:2019-09-15 发布日期:2019-09-15
通讯作者: * E-mail: wangkai_2005@hotmail.com
作者简介:王凯,男,1981年生,博士.主要从事防护林与生态恢复研究.E-mail:wangkai_2005@hotmail.com
基金资助:
国家自然科学基金项目(31400613,31570709,31770757)、国家重点研发计划专题项目(2016YTC0500803-04)、辽宁省教育厅服务地方项目(LJ2017FBL005)和辽宁省“兴辽英才计划”项目(XLYC1807017)资助

Soil carbon, nitrogen and phosphorus stoichiometry characteristics of Pinus sylvestris var. mongolica belt-mixed forests.

WANG Kai^1*, LEI Hong¹, SHI Liang², ZHANG Ri-sheng^2,3, SONG Li-ning⁴

¹College of Environmental Sciences and Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China;
²Liaoning Institute of Sandy Land Management and Utilization, Fuxin 123000, Liaoning, China;
³Zhanggutai Desert Ecosystem Research Station, Fuxin 123000, Liaoning, China;
⁴Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Received:2019-04-25 Online:2019-09-15 Published:2019-09-15
Contact: * E-mail: wangkai_2005@hotmail.com
Supported by:
This work was supported by the National Natural Science Foundation of China (31400613,31570709,31770757), the Special Subject of National Key Research and Development Program (2016YTC0500803-04), the Service Local Project in the Department of Education of Liaoning Province (LJ2017FBL005), and the Liaoning Revitalization Talents Program (XLYC1807017)

摘要/Abstract

摘要： 探究不同沙地樟子松混交林土壤碳氮磷化学计量变化规律,为其混交经营提供科学依据.以沙地樟子松纯林为对照,在沙地樟子松×榆树及沙地樟子松×怀槐带状混交林中,沿沙地樟子松和伴生树种两个方向在距离混交中心0、1、2、3和4 m处的不同土层采集土样,分析土壤有机C、全N、全P、速效N、速效P含量及其计量比的特征.结果表明: 沙地樟子松混交林土壤有机C、全N和速效N含量高于纯林, 沙地樟子松与榆树混交主要增加了深层土壤有机C和全N含量,以及C/N和C/P, 沙地樟子松与怀槐混交提高了土壤N含量, 降低了P含量.随着远离混交林中心,沙地樟子松×榆树混交林中沙地樟子松林带的土壤C/N先升高后降低,全P和速效P含量下降,N/P增加;榆树林带土壤C/N下降,速效P含量先升高后降低.沙地樟子松×怀槐混交林土壤全N含量在沙地樟子松林带先降低后升高,在怀槐林带先升高后降低.沙地樟子松混交林提高了土壤C、N储量,沙地樟子松应与榆树行间混交,与怀槐间隔2行混交.

Abstract: To provide theoretical basis for management of Pinus sylvestris var. mongolica mixed plantation, the variation of soil carbon, nitrogen and phosphorus stoichiometry in different P. sylvestris var. mongolica belt-mixed plantations were explored. Taking the monoculture plantation as control, soil samples were collected at the distance of 0, 1, 2, 3, and 4 m from the center point in P. sylvestris var. mongolica and Ulmus pumila mixed plantation and P. sylvestris var. mongolica and Maackia amurensis mixed plantation along the two directions of P. sylvestris var. mongolica and its associated species in different soil layers. Contents and stoichiometric ratios of soil organic C, total N, total P, available N, available P were analyzed. The results showed that soil organic C, total N, and available N in P. sylvestris var. mongolica mixed plantations were higher than those in pure plantation. The soil organic C, total N contents, C/N and C/P in deep soil layers were increased under P. sylvestris var. mongolica and U. pumila mixed plantation. The soil N content increased but P content decreased in P. sylvestris var. mongolica and M. amurensis mixed plantation. With the increases of distance from the center of mixed plantation, soil C/N firstly increased and then decreased, while soil total P and available P contents decreased and N/P increased in P. sylvestris var. mongolica belt. Soil C/N decreased and available P contents firstly increased and then decreased with the increases of distance from the center in U. pumila belt of P. sylvestris var. mongolica and U. pumila mixed plantation. Soil total N content firstly decreased and then increased in P. sylvestris var. mongolica belt, but it firstly increased and then decreased in M. amurensis belt of P. sylvestris var. mongolica and M. amurensis mixed plantation. P. sylvestris var. mongolica mixed plantation could improve soil C and N stocks compared with pure plantation. The best mixed mode was P. sylvestris var. mongolica and U. pumila mixed by one row, as well as P. sylvestris var. mongolica and M. amurensis mixed in two rows.

王凯, 雷虹, 石亮, 张日升, 宋立宁. 沙地樟子松带状混交林土壤碳氮磷化学计量特征[J]. 应用生态学报, 2019, 30(9): 2883-2891.

WANG Kai, LEI Hong, SHI Liang, ZHANG Ri-sheng, SONG Li-ning. Soil carbon, nitrogen and phosphorus stoichiometry characteristics of Pinus sylvestris var. mongolica belt-mixed forests.[J]. Chinese Journal of Applied Ecology, 2019, 30(9): 2883-2891.

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沙地樟子松带状混交林土壤碳氮磷化学计量特征

Soil carbon, nitrogen and phosphorus stoichiometry characteristics of Pinus sylvestris var. mongolica belt-mixed forests.

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