|Table of Contents|

Mixed Advantage and Mechanism of Armeniaca sibirica and Hippophae rhamnoides in Loess Hilly Region of Ningxia

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年08
Page:
85-91
Research Field:
Publishing date:

Info

Title:
Mixed Advantage and Mechanism of Armeniaca sibirica and Hippophae rhamnoides in Loess Hilly Region of Ningxia
Author(s):
XU Hao1; 2; 3; CAI Jinjun3; 4; DONG Liguo1; 2; 3; HAN Xinsheng1; 2; 3; WANG Yueling1; 2; 3; GUO Yongzhong1; 2; 3
(1.Institute of Desertification Control,Ningxia Academy of Agricultural and Forestry Sciences，Yinchuan，Ningxia 750002；2.Ningxia Key Laboratory of Desertification Control and Soil and Water Conservation,Yinchuan，Ningxia 750002；3.Research Center for Ecological Restoration and Multi-Functional Forestry of Ningxia,Yinchuan，Ningxia 750002；4.Institute of Agricultural Resources and Environment,Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan，Ningxia 750002)
Keywords:
Loess Hilly Region; Armeniaca sibirica; Hippophae rhamnoides; mixed advantage
PACS:
-
DOI:
10.11937/bfyy.20202863
Abstract:
The growth status and biomass of mixed forest of Armeniaca sibirica and Hippophae rhamnoides Linn.in Loess Hilly Region of Ningxia were investigated.The mechanism of mixed advantage was analyzed,in order to provide reference for the development of mountain plantation.The results showed that tree height of Armeniaca sibirica in the mixed forest was 1747% higher than the pure forest on average,and the biomass was 1277% higher than the pure forest.Carbon sequestration of mixed forests was 389 times to pure forests.And mixed forest had higher soil water use efficiency.The slope surface runoff of mixed forest was only 251% of that of pure forest,the sediment concentration of runoff was only 597% of that of pure forest,and the soil erosion amount was only 178% of that of pure forest.The ecological function advantage was obvious.Since the root system of Hippophae rhamnoides Linn.could form special root nodules with frankella in the soil,and effectively fix the free nitrogen in the air by root nodules,the increase of nitrogen in the soil obviously come from the nutrients supplemented by the nitrogen fixation in the root nodules of Hippophae rhamnoides Linn..After the mixture of Hippophae rhamnoides Linn.and mountain apricot,the supply of nitrogen in forest soil was greatly increased due to the nitrogen-fixing effect of root nodules of Hippophae rhamnoides Linn..Sufficient nitrogen supply stimulated the growth of the Armeniaca sibirica,so its growth and biomass increased significantly,showing an obvious growth advantage.In ecological construction,this type of mixed forest could be used as carbon sequestration forest for applying.

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Last Update: 2021-07-13