科尔沁沙地奈曼沙区小叶杨防护林带间植被与土壤特性变化

郭欣宇; 杨光; 李庆和; 薛艳春; 温雅琴; 杨溢文

doi:10.13961/j.cnki.stbctb.2022.06.017

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科尔沁沙地奈曼沙区小叶杨防护林带间植被与土壤特性变化

试验研究

- 科尔沁沙地奈曼沙区小叶杨防护林带间植被与土壤特性变化
- Changes in Vegetation and Soil Properties Between Shelterbelts of Populus Simonii in Naiman Sand Zone of Horqin Sandy Land Area
- 水土保持通报 2022年42卷第6期页码：129-136
- 作者机构：
  
  1. 内蒙古农业大学沙漠治理学院荒漠生态系统保护与修复国家林业和草原局重点实验室,内蒙古,呼和浩特,010018
  2. 内蒙古自治区水利事业发展中心,内蒙古,呼和浩特,010020
  3. 呼和浩特市水资源与河湖保护中心,内蒙古,呼和浩特,010020
  4. 内蒙古自治区林业科学研究院草原研究所,内蒙古,呼和浩特,010010
- 作者简介：
- 基金信息：
  
  内蒙古自治区科技重大专项课题"沙地生态系统近自然修复技术研究及产业化示范"(2019ZD003-2)
- DOI：10.13961/j.cnki.stbctb.2022.06.017
  中图分类号： Q948;S775
- 纸质出版：2022
- 稿件说明：
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郭欣宇, 杨光, 李庆和, 等. 科尔沁沙地奈曼沙区小叶杨防护林带间植被与土壤特性变化[J]. 水土保持通报, 2022,42(6):129-136.

Guo Xinyu, Yang Guang, Li Qinghe, et al. Changes in Vegetation and Soil Properties Between Shelterbelts of Populus Simonii in Naiman Sand Zone of Horqin Sandy Land Area[J]. Bulletin of Soiland Water Conservation, 2022, 42(6): 129-136.
郭欣宇, 杨光, 李庆和, 等. 科尔沁沙地奈曼沙区小叶杨防护林带间植被与土壤特性变化[J]. 水土保持通报, 2022,42(6):129-136. DOI： 10.13961/j.cnki.stbctb.2022.06.017.

Guo Xinyu, Yang Guang, Li Qinghe, et al. Changes in Vegetation and Soil Properties Between Shelterbelts of Populus Simonii in Naiman Sand Zone of Horqin Sandy Land Area[J]. Bulletin of Soiland Water Conservation, 2022, 42(6): 129-136. DOI： 10.13961/j.cnki.stbctb.2022.06.017.

摘要

[目的] 以科尔沁沙地奈曼沙区小叶杨(Populus simonii)防护林为研究区域，研究防护林带间植被修复与土壤发育的最适行带配置模式，为科尔沁沙地人工造林提供科学依据。 [方法] 对4种不同带间距的行带式小叶杨防护林带间植物群落多样性、土壤理化性质及其相关性进行研究。 [结果] 带间距的大小对小叶杨防护林带间植被与土壤恢复有明显影响，植被恢复与土壤恢复是相辅相成的。① 自然状态下防护林带间物种多样性及群落稳定性具体表现为：带间距10 m＞6 m＞4 m＞2 m； ②土壤含水量及土壤养分(有机碳、碱解氮、速效磷、速效钾)含量表现为：带间距10 m＞6 m＞4 m＞2 m，土壤容重为：带间距10 m＜6 m＜4 m＜2 m； ③在0-60 cm土层深度中，不同带间距小叶杨防护林带间物种多样性指数与土壤理化性质呈现出不同程度的显著或极显著相关(p＜0.05)，其中与各物种多样性指数相关性最大的为土壤容重，与各土壤理化性质相关性最明显的物种多样性指数为Margalef丰富度指数。 [结论] 在科尔沁沙地奈曼沙区小叶杨人工造林过程中，适当增大行带式小叶杨造林带间距，能够有效提高林地生产水平与生态效益。综合考虑带间植被与土壤恢复，造林带间距达到10 m为宜。

Abstract

[Objective] The most suitable row-band configuration pattern was determined for vegetation restoration and soil development between protection forest strips in the Populus simonii shelterbelt located in the Naiman sand region of the Horqin sandy land area to provide a scientific basis for artificial afforestation in this area. [Methods] Plant community diversity

soil physicochemical properties

and their correlation for four types of Populus simonii shelterbelts with different band spacings were studied. [Results] The size of the band spacing had a significant impact on the vegetation and soil restoration between Populus simonii shelterbelts

and vegetation restoration and soil restoration were complementary. ① Species diversity and community stability in the natural state showed some decrease by the distance between bands from 10 m

6 m

4 m

to 2 m; ② Soil water content and soil nutrient contents (organic matter

alkaline hydrolyzable nitrogen

fast-acting phosphorus

and fast-acting potassium) presented the same downward trend from 10 m

6 m

4 m

to 2 m

but the soil bulk density showed an upward trend from 10 m

6 m

4 m

to 2 m; ③ In the 0-60 cm soil layer

species diversity indices and soil physicochemical properties showed significant or highly significant correlations (p＜0.05) between the different band spacings of Populus simonii

among which the most significant correlation with each species diversity index was the soil bulk density

and the most significant correlation with each soil physicochemical property was the Margalef richness index. [Conclusion] For the artificial afforestation process of Populus simonii in the Naiman sand region of the Horqin sandy land area

an appropriate increase in the spacing between row-banded small-leaved poplar plantations can effectively improve the production level and ecological benefits of the forest land

and a spacing of 10 m is appropriate.

关键词

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