文献类型：期刊文献

英文题名：Effects of Stumping and Meteorological Factors on Sap Flow Characteristics of Haloxylon ammodendron in Ulan Buh Desert, Northwestern China

作者：Ma, Yingbin[1,2,3] Huang, Yaru[1,2,4] Zhang, Jingbo[1,2,4] Hao, Xuting[1,2] Xin, Zhiming[1,3] Cui, Jian[1,2] Dong, Xue[1,4] Wang, Haoyi[1,2,4] Han, Chunxia[1,4] Zhu, Jinlei[5,6,7] Lu, Qi[5,6,7]

第一作者：Ma, Yingbin;马迎宾

通信作者：Zhu, JL[1];Lu, Q[1];Zhu, JL[2];Lu, Q[2];Zhu, JL[3];Lu, Q[3]

机构：[1]Chinese Acad Forestry, Expt Ctr Desert Forestry, Bayannur 015200, Peoples R China;[2]Natl Forestry & Grassland Adm, Combat Desertificat Engn Technol Res Ctr, Bayannur 015200, Peoples R China;[3]Inner Mongolia Dengkou Desert Ecosyst Observat Res, Bayannur 015200, Peoples R China;[4]Natl Forestry & Grassland Adm, Natl Long Term Sci Res Base Comprehens Control Ula, Bayannur 015200, Peoples R China;[5]Inst Great Green Wall, Bayannur 015200, Peoples R China;[6]Chinese Acad Forestry, Inst Ecol Conservat & Restorat, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[7]Gansu Dunhuang Kumtag Desert Ecosyst Observat & Re, Dunhuang 736200, Peoples R China

年份：2024

卷号：15

期号：11

外文期刊名：ATMOSPHERE

收录：;EI(收录号：20244817443387);Scopus(收录号：2-s2.0-85210166361);WOS:【SCI-EXPANDED(收录号:WOS:001364587300001)】；

基金：This work was funded by Basic scientific research expenses of central public welfare research institutes, grant numbers CAFYBB2021MA005; Central Guiding Local Science and Technology Development Funds, grant number 2021ZY0058; Natural Science Foundation of Inner Mongolia, grant number 2023QN03008 and 2024MS03038; National Natural Science Foundation of China, grant number 32001374.

语种：英文

外文关键词：stumping; sap flow; Haloxylon ammodendron; Ulan Buh Desert; meteorological factors

摘要：The shrub/dwarf tree Haloxylon ammodendron is a prevalent woody plant used to combat desertification in the arid and semi-arid regions of northwestern China. Despite its drought resistance, artificial stands of this species experience significant degradation approximately ten years post-afforestation. Stumping, which involves cutting a portion of the above-ground part of shrubs/trees, is a common practice aimed at reducing water consumption and enhancing the growth of these stands. However, the impact of stumping on the sap flow of H. ammodendron remain inadequately understood, posing challenges to the sustainable management of these artificial stands. In this study, we monitored the sap flow of H. ammodendron subjected to various stumping treatments in the Ulan Buh Desert using the PS-TDP8 tree sap flow monitoring system. Concurrently, we measured several meteorological factors with an automatic weather station. We examined the changes in sap flow velocity following stumping and its response to meteorological factors to elucidate water use during growth. Our findings indicate that both the change in sap flow velocity and characteristics were closely associated with the degree of stumping. The initiation time of sap flow for H. ammodendron under different stumping treatments was earlier than that of the control group. The daily mean value and daily accumulation of sap flow followed the order: 50% stumping > control (no stumping) > 75% stumping > 100% stumping. Sap flow velocity and daily sap flow accumulation increased at 50% stumping but decreased at 75% and 100% stumping. Stumping altered the relationships between sap flow velocity and meteorological factors, with the correlation coefficient between these variables decreasing as the degree of stumping increased. The sap flow following stumping was primarily influenced by both the degree of stumping and meteorological factors. These results may contribute to a better understanding of water transport during the growth of H. ammodendron following stumping.