摘要
【目的】提高集约经营毛竹林生产效益和毛竹林生态系统的碳汇能力;【方法】选择穴施毛竹专用肥(Ⅰ)和毛竹竹腔施肥(Ⅱ)两种施肥方式,以不施肥(Ⅲ)为对照,研究不同施肥方式对毛竹林生态系统碳储量、竹林土壤理化性质的影响。【结果】施肥能提高毛竹林分生物量,穴施毛竹专用肥最为明显,较对照增加55.12%高达16.97 t/hm2;竹腔施肥使土壤碳储量和竹林生态系统碳储量显著提升,而穴施专用肥与对照样地间无显著差异。竹腔施肥对土壤磷素的消耗较穴施专用肥少,且能够提高土壤有机质和土壤有机碳含量。竹腔施肥增加土壤毛管孔隙度、降低非毛管孔隙度,而穴施措施则降低了毛管孔隙度、增加了非毛管孔隙度;此外,竹腔施肥对土壤容重影响较小,穴施专用肥降低了土壤容重。【结论】穴施专用肥显著提高毛竹植被碳储量而并未提升竹林生态系统的碳储量;竹腔施肥显著提高土壤层碳储量进而显著提高竹林生态系统的碳储量。此外,毛竹林竹腔施肥对土壤营养元素的消耗较穴施专用肥小,且在一定程度上能改善土壤物理性质。竹腔施肥有利于毛竹林系统碳储量的增加,是一种能够促进竹林固碳的经营方式。
【Objective】The objective of the study was to explore the effects of different fertilizer treatment on carbon reserves and soil physic-chemical properties in a Phyllostachys edulis forest and to improve production and carbon storage in bamboo farming.【Method】The specialized fertilizer in the way of soil hole was used in this study. There were three treatments,including fertilizer in bamboo cavity two treatments and control without any fertilizer.【Results】The biomass of bamboo was increased by fertilizing. Especially,fertilizing in soil hole increased biomass by 55.12%（16.97 t/hm^2）. Compared with control plot,the carbon storage of soil and bamboo ecosystem were increased notably by fertilizing in bamboo cavity,while no any significant difference by fertilizing in soil hole. In the terms of soil physic-chemical properties,the phosphorus had a fewer loss in the bamboo cavity fertilizing plot than in the soil hole fertilizing plot. The soil organic matter and soil organic carbon was significantly higher in the plot with fertilizing in bamboo cavity relative to the control plot. Fertilizing in bamboo cavity increased soil capillary porosity but decrease non-capillary porosity. Conversely,fertilizing in soil hole declined and capillary porosity but enhanced non-capillary porosity. Furthermore,fertilizing in bamboo cavity did not affect soil bulk density but fertilizing in soil hole lowered soil bulk density. 【Conclusion】Fertilization in bamboo cavity is an more effective measure to increase the carbon storage of bamboo ecosystem as compared to fertilization in soil hole. In addition,it may reduce the loss of soil nutrients and promote the soil physical properties by fertilizing in bamboo cavity. However,fertilizing in soil hole could cause soil degradation. Based on these,fertilization of bamboo cavity is beneficial to increase of carbon storage and to promote the carbon sequestration of bamboo forest ecosystem.
作者
陈本学
刘广路
蔡春菊
李雁冰
CHEN Ben-xue;LIU Guang-lu;CAI Chun-ju;LI Yan-bing(International Center for Bamboo and Rattan,Beijing 100102,China;Zhoukou Normal University,Zhoukou 466001,He’nan,China)
出处
《四川农业大学学报》
CSCD
北大核心
2018年第3期323-328,共6页
Journal of Sichuan Agricultural University
基金
国际竹藤中心基本业务专项"基于生长特性的毛竹林高效培育技术研究"(1632018003)
关键词
毛竹林
穴施肥
竹腔施肥
碳储量
土壤理化性质
Phyllostachys edulis forests
hole fertilizing
bamboo cavity fertilizing
carbon storage
soil physical and chemical properties
