砒砂岩区沙棘根系的生境适应性

doi:10.13287/j.1001-9332.201901.024

应用生态学报 ›› 2019, Vol. 30 ›› Issue (1): 157-164.doi: 10.13287/j.1001-9332.201901.024

砒砂岩区沙棘根系的生境适应性

王浩¹,黄晨璐¹,杨方社^1,2*,李怀恩²

¹西北大学城市与环境学院, 西安 710127;
²西安理工大学西北旱区生态水利工程国家重点实验室培育基地, 西安 710048

收稿日期:2018-07-23 修回日期:2018-11-06 出版日期:2019-01-20 发布日期:2019-01-20
通讯作者: yangfangshe978@163.com
作者简介:王浩, 男, 1992年生, 硕士研究生. 主要从事水土保持和生态工程研究. E-mail: nwuwh2015@163.com
基金资助:
本文由国家自然科学基金项目(51279163)和西北旱区生态水利工程国家重点实验室培育基地项目(2016KFKT-4)资助

Root habitat flexibility of seabuckthorn in the Pisha sandstone area

WANG Hao¹, HUANG Chen-lu¹, YANG Fang-she^1,2*, LI Huai-en²

¹College of Urban and Environmental Science, Northwest University, Xi’an 710127, China;
²State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area of Northwestern China, Xi’an University of Technology, Xi’an 710048, China

Received:2018-07-23 Revised:2018-11-06 Online:2019-01-20 Published:2019-01-20
Supported by:
This work was supported by the National Natural Science Foundation of China (51279163) and the State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area of Northwestern China (2016KFKT-4).

摘要/Abstract

摘要： 以人工种植在内蒙古砒砂岩区3年生中国沙棘根系为研究对象,运用分形理论和统计分析方法,对不同生境条件下沙棘根系分形参数、根长、根数、根系质量、根冠比等进行研究.结果表明: 土壤水分对砒砂岩区沙棘根系构型影响最显著,其次是坡度,坡位对沙棘根系构型影响最小.砒砂岩区沙棘适宜种植在土壤含水率为8%左右的坡腰或坡底,坡腰坡度以30°～35°为宜.随土壤含水率的增加沙棘根冠比逐渐减小,随坡度的增加根冠比先增大后减小,随坡位的上升根冠比也表现出先增后减的趋势.沙棘在干旱贫瘠的坡腰具有根系发达、根冠比高的特征,符合固土护坡树种的基本特征与要求.

Abstract: We examined root fractal parameters, root length, root quantity, root mass, root-shoot ratio of 3-year-old seabuckthorn in the Pisha sandstone area of Inner Mongolia, using the fractal theory and statistical method. The results showed that soil moisture had the most significant effect on the root architecture, followed by slope. Slope position had the least effect on the root architecture. The seabuckthorn in the Pisha sandstone area was suitable for planting on slope bottom or mid-slope with a soil moisture of about 8%. Mid-slope with a slope of 30°-35° was recommended. The root-shoot ratio of seabuckthorn decreased with increasing soil moisture. It increased at first and then decreased with increasing slope and slope position. Seabuckthorn with the characters of developed root and high root-shoot ratio in arid and barren midslope meets the basic requirements of tree species for soil-fixing and slope-protection.

王浩,黄晨璐,杨方社,李怀恩. 砒砂岩区沙棘根系的生境适应性[J]. 应用生态学报, 2019, 30(1): 157-164.

WANG Hao, HUANG Chen-lu, YANG Fang-she, LI Huai-en. Root habitat flexibility of seabuckthorn in the Pisha sandstone area[J]. Chinese Journal of Applied Ecology, 2019, 30(1): 157-164.

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砒砂岩区沙棘根系的生境适应性

Root habitat flexibility of seabuckthorn in the Pisha sandstone area

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