宁南典型退耕模式对土壤有机碳固存的影响

doi:10.3969/j.issn.1004-1524.2017.03.19

浙江农业学报 ›› 2017, Vol. 29 ›› Issue (3): 483-488.DOI: 10.3969/j.issn.1004-1524.2017.03.19

宁南典型退耕模式对土壤有机碳固存的影响

季波^{1, 2, 3}, 李娜^{1, 2, 3}, 马璠^{1, 2, 3}, 蔡进军^{1, 2, 3}, 董立国^{1, 2, 3}, 许浩^{1, 2, 3}, 韩新生^{1, 2, 3}

1.宁夏农林科学院荒漠化治理研究所,宁夏银川 750002;
2.宁夏防沙治沙与水土保持重点实验室,宁夏银川 750002;
3.宁夏生态修复与多功能林业综合研究中心,宁夏银川 750002

收稿日期:2016-11-03 出版日期:2017-03-20 发布日期:2017-03-31
作者简介:季波(1982—),女,宁夏青铜峡人,硕士,助理研究员,研究方向为恢复生态学。E-mail:nxjibo311@163.com
基金资助:
“十二五”国家科技支撑项目(2015BAC01B01); 自治区一二三产业融合项目(宁夏多功能林业分区域研究与示范); 宁夏自然科学基金项目(NZ16095,NZ16106,NZ15121); 宁夏农林科学院科技创新先导资金项目(NKYJ-15-18,NKYJ-15-19)

Effect of typical re-vegetation patterns on soil organic carbon sequestration in southern Ningxia

JI Bo^{1, 2, 3}, LI Na^{1, 2, 3}, MA Fan^{1, 2, 3}, CAI Jinjun^{1, 2, 3}, DONG Liguo^{1, 2, 3}, XU Hao^{1, 2, 3}, HAN Xinsheng^{1, 2, 3}

1. Institute of Desert Management, Ningxia Academy of Agriculture and Forestry Science, Yinchuan 750002, China;
2. Key Laboratory of Desertification Control and Soil & Water Conservation of Ningxia, Yinchuan 750002, China;
3. Research Center of Ecological Restoration and Multifunction Forestry of Ningxia, Yinchuan 750002, China

Received:2016-11-03 Online:2017-03-20 Published:2017-03-31

摘要/Abstract

摘要： 以宁南退耕区采取的5种主要退耕模式——纯山杏林、山杏+柠条林、山杏+山桃+柠条林、沙棘林和苜蓿人工草地为研究对象,以撂荒地为对照,探讨不同退耕模式对土壤有机碳固存的影响。结果表明:在100 cm土层内5种退耕模式和撂荒对照的土壤有机碳储量基本上呈现出随土层深度加深而递减的趋势,其中浅层(0~20 cm)是土壤有机碳固存的聚集层,且极显著高于其他层的土壤有机碳累积;100 cm土层累积的总碳量表现为山杏+柠条林>山杏林>沙棘林>山杏+山桃+柠条林>撂荒地>苜蓿人工草地。从有机碳蓄积来看,在宁南山区采用单一的乔灌混交、乔木林或灌木林的退耕模式较采用人工草地或自然恢复的模式更有利于土壤有机碳的累积。

关键词: 宁南退耕区, 土壤有机碳, 退耕模式

Abstract: In order to find out the effect on soil organic carbon sequestration of different re-vegetation patterns, 5 main re-vegetation patterns, including pure wild apricot forest, wild apricot and Caragana korshinskii forest, wild apricot and wild peach and Caragana korshinskii forest, seabuckthorn forest and artificial alfalfa grassland were selected as the study objects, and the abandoned land were adopted as the control in southern Ningxia. It was shown that the soil organic carbon reserves of the 5 main re-vegetation patterns and abandoned land took on decreasing trend with the increase of soil depth basically within 100 cm soil layer, and the shallow layer (0-20 cm) was the accumulation layer of soil organic carbon sequestration, as soil organic carbon reserve in this layer was significantly higher than that in other soil layers. The total organic carbon sequestration in 100 cm layer decreased as wild apricot and Caragana korshinskii forest>pure wild apricot forest>seabuckthorn forest>wild apricot and wild peach and Caragana korshinskii forest>abandoned land>artificial alfalfa grassland. From the view of organic carbon accumulation, the re-vegetation patterns with arbor and shrub or pure trees forest or shrubs forest were more appropriate than artificial grassland or natural restoration for mountainous area in southern Ningxia.

Key words: re-vegetation area in southern Ningxia, soil organic carbon, re-vegetation pattern

中图分类号:

S153

季波, 李娜, 马璠, 蔡进军, 董立国, 许浩, 韩新生. 宁南典型退耕模式对土壤有机碳固存的影响[J]. 浙江农业学报, 2017, 29(3): 483-488.

JI Bo, LI Na, MA Fan, CAI Jinjun, DONG Liguo, XU Hao, HAN Xinsheng. Effect of typical re-vegetation patterns on soil organic carbon sequestration in southern Ningxia[J]. , 2017, 29(3): 483-488.

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宁南典型退耕模式对土壤有机碳固存的影响

Effect of typical re-vegetation patterns on soil organic carbon sequestration in southern Ningxia

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