[1]张锦春,孙学兵,郭树江,等. 基于同化枝生长的民勤荒漠梭梭固沙林耗水量估算[J].西北林学院学报,2023,38(6):103-109.[doi:10.3969/j.issn.1001-7461.2023.06.14]
　ZHANG Jin-chun,SUN Xue-bing,GUO Shu-jiang,et al. Estimation of Water Consumption of Haloxylon ammodendron Sand-Fixation Forest in Minqin Desert Based on the Growth of Assimilating Shoots[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(6):103-109.[doi:10.3969/j.issn.1001-7461.2023.06.14]
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 基于同化枝生长的民勤荒漠梭梭固沙林耗水量估算()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第6期
页码:
103-109
栏目:
出版日期:
2023-11-30

文章信息/Info

Title:
 Estimation of Water Consumption of Haloxylon ammodendron Sand-Fixation Forest in Minqin Desert Based on the Growth of Assimilating Shoots
文章编号:
1001-7461(2023)06-0103-07
作者:
 张锦春1; 2; 3; 孙学兵4; 郭树江1; 4; 闫沛迎1; 3; 赵艳丽3; 段晓峰1; 4; 强玉泉3; 柳小平4; 马福元4
 （1.甘肃民勤荒漠草地生态系统国家野外科学观测研究站，甘肃 民勤 733300；2.甘肃省荒漠化与风沙灾害防治国家重点实验室，甘肃 武威 733000；3.甘肃省治沙研究所，甘肃 兰州 730070；4.甘肃省民勤治沙综合试验站，甘肃 民勤 733300）
Author(s):
 ZHANG Jin-chun1; 2; 3; SUN Xue-bing4; GUO Shu-jiang1; 4; YAN Pei-ying1; 3; ZHAO Yan-li3; DUAN Xiao-feng1; 4; QIANG Yu-quan3; LIU Xiao-ping4; MA Fu-yuan4
 (1.Minqin National Research Station for Desert Steppe Ecosystem,Minqin 733300,Gansu,China; 2.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating,Wuwei 733000,Gansu,China; 3.Gansu Desert Control Research Institute,Lanzhou 730070,Gansu,China; 4.Gansu Minqin Desert Control Experimental Station,Minqin 730070,Gansu,China)
关键词:
 ; 梭梭固沙林; 茎干液流; 耗水量; 民勤荒漠
Keywords:
Haloxylon ammodendron sand-fixation forest;  stem sap flow;  water consumption;  Minqin desert
分类号:
S727.23
DOI:
10.3969/j.issn.1001-7461.2023.06.14
文献标志码:
A
摘要:
 为准确估算民勤荒漠梭梭固沙林耗水量，运用热平衡茎流测量技术，对民勤荒漠梭梭茎干液流动态进行监测,选择同化枝生长指标为扩展纯量,对梭梭单株耗水量与单株同化枝表面积和同化枝干重进行相关性拟合，推算梭梭固沙林耗水量。结果表明，梭梭同化枝生长与其耗水量月变化过程同步，梭梭快速生长期（7月）同化枝生长及耗水量明显高于展叶（5月）和落叶期（10月），经相关性分析确定梭梭同化枝表面积、同化枝干重与其耗水量存在线性函数关系；模拟推算梭梭固沙林耗水量受林分密度及分枝构型的影响较大，且不同龄林梭梭同化枝生长模拟均略小于实测值，相对而言同化枝表面积模拟值平均相对误差更小（8.92％）。因此，以同化枝表面积和同化枝干重推算梭梭固沙林耗水可行，可实现梭梭林耗水量的可靠估算，为荒漠植被固沙造林及其生态用水管理等提供参考。
Abstract:
 In order to accurately estimate water consumption of Haloxylon ammodendron sand-fixation forest in Minqin desert,the stem flow dynamics of the assimilating shoots of H.ammodendron was monitored by using heat balance stem flow measurement technology.The growth of assimilating shoots was taken as the upscaling index,the water consumption of H.ammodendron stand was calculated by fitting the correlations between the individual water consumption and the surface area and the try weight of assimilating shoots.The results showed that the growth of H.ammodendron was synchronous to the water consumption.The growth and water consumption were significantly higher in the rapid growth stage (July) than those in the leaf opening stage (May) and the defoliation stage (October).The correlation analysis demonstrated that there existed linear function relationships between the water consumption and surface area,dry weight of assimilating shoots.The simulated water consumption of H.ammodendron was significantly affected by stand density and shoot configuration,and the simulated water consumption of assimilating shoots with different ages was slightly less than the measured value,while the average relative error of simulated values of assimilating shoot surface area was smaller (8.92%).Therefore,it is feasible to calculate water consumption of H.ammodendron sand-fixing forest based on assimilating shoot surface area and shoot weight,which can achieve reliable estimation of water consumption of H.ammodendron forest,and to provide reference for desert vegetation sand-fixing afforestation and ecological water management.

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备注/Memo

备注/Memo:
 收稿日期：2022-08-21修回日期：2022-10-07
基金项目：国家自然科学基金（32260425，31860238）。
第一作者：张锦春，博士，研究员。研究方向：荒漠化及荒漠水文。E-mail:zhangjcgs@126.com
更新日期/Last Update: