围封与放牧措施下生物土壤结皮发育及其微生境土壤养分特征

doi:10.11733/j.issn.1007-0435.2016.06.010

草地学报 ›› 2016, Vol. 24 ›› Issue (6): 1218-1225.DOI: 10.11733/j.issn.1007-0435.2016.06.010

围封与放牧措施下生物土壤结皮发育及其微生境土壤养分特征

韩炳宏^1,2, 牛得草¹, 袁晓波¹, 任运涛¹, 石明明¹, 吴让², 傅华¹

1. 草地农业生态系统国家重点实验室兰州大学草地农业科技学院, 甘肃兰州 730020;
2. 青海省海南藏族自治州兴海县气象局, 青海兴海 813399

收稿日期:2016-06-21 修回日期:2016-08-18 出版日期:2016-12-15 发布日期:2017-03-18
通讯作者: 牛得草
作者简介:韩炳宏(1988-),男,甘肃会宁人,硕士,助理工程师,主要从事草地生态学方面的研究,E-mail:hanbh13@lzu.edu.cn
基金资助:
国家重点基础研究发展计划项目（2014CB138703）；国家科技基础性工作专项（2012FY111900）；国家科技重大专项（2016CB158704）；国家自然科学基金（31572458；31201837）；高等学校博士学科点专项科研基金（20120211110029）；兰州大学“本科教学工程”国家级大学生创新创业训练计划（201510730100）；长江学者和创新团队发展计划（IRT13019）资助

The Development of Biological Soil Crusts and Its Soil Nutrients Characteristics of Microhabitats under Fenced and Grazed

HAN Bing-hong^1,2, NIU De-cao¹, YUAN Xiao-bo¹, REN Yun-tao¹, SHI Ming-ming¹, WU Rang², FU Hua¹

1. State Key Laboratory of Grassland Agro-ecosystem, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, Gansu Province 730020, China;
2. The Meteorology Station, Xinghai County, Hainan Tibetan Autonomous Prefecture 813399, Xinghai, Qinghai Province 813399, China

Received:2016-06-21 Revised:2016-08-18 Online:2016-12-15 Published:2017-03-18

摘要/Abstract

摘要：

为了探讨围封与放牧措施下生物土壤结皮发育及其与微生境土壤养分的对应关系，本研究以黄土高原天然草地两类生物土壤结皮（藻类和藓类）为研究对象，调查了生物土壤结皮发育的形态指标，并就不同措施下生物土壤结皮层及其下层土壤养分特征进行了比较分析。结果表明，两类生物土壤结皮对围封与放牧干扰的响应一致，盖度均表现为围封显著高于放牧，而厚度和生物量无显著差异。然而，围封与放牧对生物土壤结皮层及其结皮下层养分含量的影响不尽相同，围封藻结皮层及其结皮下层SOC，TN和Zn含量显著高于放牧，而TP和Na则显著低于放牧。另外，生物土壤结皮层与结皮下层养分间的关系均存在差异，其藻结皮层土壤SOC与TN，TP，Na，K，Fe，Mn和Zn均呈正相关，与Ca呈负相关；藓结皮层SOC分别与Mn和Zn呈正相关，而与Ca和Fe呈负相关。

关键词: 黄土高原, 生物土壤结皮, 发育特征, 土壤养分, 干扰

Abstract:

In order to explore the relationships between the development of biological soil crusts and soil nutrient characteristics of its microhabitat under fenced and grazed, this study selected two kinds of biological soil crusts in the natural grassland of the Loess Plateau as the research objects to investigate the morphological indexes of biological soil crusts. Meanwhile, the soil nutrients characteristics of different types biological soil crusts layer and the under crusts had been analyzed and compared. The results indicated that The response of the development of different soil crusts to fenced and grazed disturbance was consistent. It showed the coverage in fenced plot was significantly higher than that in the grazed, and the thickness and biomass had no significant difference. However, the SOC, TN and Zn contents of algae cortex soil and the subcutaneous layer in the fenced were significantly higher than that in the grazed, and the contents of TP and Na in the fenced were significantly lower than that in the grazed. In addition, fenced or grazed, there was a positive correlation relationships between the algae cortex SOC and TN, TP, Na, K, Fe, Mn and Zn, respectively; but negatively correlated with Ca; moss cortex Mn and Zn were positively correlated with SOC. but negatively related with Ca and Fe.

Key words: The Loess Plateau, Biological soil crusts, Development characteristics, Soil nutrients, Disturbance

中图分类号:

S153.6

韩炳宏, 牛得草, 袁晓波, 任运涛, 石明明, 吴让, 傅华. 围封与放牧措施下生物土壤结皮发育及其微生境土壤养分特征[J]. 草地学报, 2016, 24(6): 1218-1225.

HAN Bing-hong, NIU De-cao, YUAN Xiao-bo, REN Yun-tao, SHI Ming-ming, WU Rang, FU Hua. The Development of Biological Soil Crusts and Its Soil Nutrients Characteristics of Microhabitats under Fenced and Grazed[J]. Acta Agrestia Sinica, 2016, 24(6): 1218-1225.

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围封与放牧措施下生物土壤结皮发育及其微生境土壤养分特征

The Development of Biological Soil Crusts and Its Soil Nutrients Characteristics of Microhabitats under Fenced and Grazed

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