摘要
文章以库布齐沙漠人工沙柳林为研究对象,研究不同立地条件下5a、10a、15a沙柳固碳量,固碳量与沙柳丛高、冠幅、基径、基部枝条粗度、基部分枝数、单枝最大分枝数、单枝最大枝芽数这7项生长因子的关系。主要结论如下:①从固碳量来看,平茬3次的15 a沙柳沙柳固碳量(9.45 kg·株^-1)>平茬2次的10 a沙柳沙柳固碳量(4.74 kg·株^-1)>平茬1次的5 a沙柳沙柳固碳量(1.79 kg·株^-1),三者差异显著(P<0.05)。②从沙柳不同生长因子与固碳量能力的墓函数分析来看,基部分枝数(用=0.6154)、枝条基部粗度(R^2=0.6032)、基径(R^2=0.6022)、冠幅(R^2=0.5648)、丛高(R^2=0.4693)与固碳量的关系较高。③不同立地条件下,丘间低地沙埋下沙柳固碳量及各生长因子的生长状况优于迎风坡风蚀和丘间低地未沙埋条件下。
Taking artificial Salix psammophila forest in Kubuqi Desert as the research object,this paper studied the carbon sequestration of Salix psammophila under different site conditions for 5 a,10 a and 15 a,and the relationship between carbon sequestration and seven growth factors,namely,height of Salix psammophila bush,crown width,basal diameter,basal branch diameter,basal branchnumber,maximum branch number per branch and maximum bud number per branch.The main conclusions are as follows:①In terms of carbon sequestration,the carbon sequestration of Salix psammophila(9.45 kg per plant^-1)in 15 years after three times of flat stubble>that of Salix psammophila(4.74 kg per plant^-1)in 10 years after two times of flat stubble>that of Salix psammophila(1.79kg per plant^-1)in 5 years after one time of flat stubble,the difference is significant(P<0.05).②According to the power function analysis of different growth factors and carbon sequestration capacity of Salix psammophila,the number of base branches(R^2=0.6154),branch base coarseness(R^2=0.6032),basal diameter(R^2=0.6022),crown width(R2=0.5648),cluster height(R^2=0.4693)have a higher relationship with carbon sequestration.(3)Under different site conditions,the carbon sequestration and growth of growth factors of Salix psammophila under sand burial in inter-dune lowland were better than those under wind erosion on windward slope and nonsand burial in inter-dune lowland.
作者
张学军
张岑
王树森
郭向东
康宏
梅二罕
迟悦春
温苏雅勒图
王国林
ZHANG Xuejun;ZHANG Cen;WANG Shusen;GUO Xiangdong;KANG Hong;MEI Erhan;CHI Yuechun;WEN suyaletu;WANG Guolin(Bayannur Wulate National Natural Reserve Management Authority,Wulate Back Banner 015500,Inner Mongolia,China;The key Laboratory of Desert Ecosystem Conservation and Restoration of State Forest Administration of China,College of the Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018,Inner Mongolia,China;Forestry and Grassland Bureau of Inner Mongolia Autonomous Region,Hohhot 010020,Inner Mongolia,China;The Forestry and Grassland Bureau of Hangjin Banner,Hangjin Banner 017400,Inner Mongolia,China;The Forestry and Grassland Bureau of Ordos,Ordos 017000,Inner Mongolia,China;Forestry and Grassland Bureau of Wulate Back Banner,Wulate Back Banner 015500,Bayannur City,Inner Mongolia,China;Suosuolin Management Station of Mongolian Wild Donkey National Nature Reserve,Wulate Back Banner 015500,Inner Mongolia,China)
出处
《内蒙古林业调查设计》
2020年第1期68-73,83,共7页
Inner Mongolia Forestry Investigation and Design
基金
全球环境基金内蒙古GEF-OP12项目(GEF-NMG-201603)。
关键词
沙柳
固碳量
生长因子
平茬
Salix psammophila
carbon sequestration
plant factors
stumping time
