差巴嘎蒿灌丛土壤和根系含水量对降雨的响应

生态学杂志

差巴嘎蒿灌丛土壤和根系含水量对降雨的响应

赵玮^1,2;张铜会¹;刘新平^1,2;王少昆^1,2;罗亚勇^1,2

¹中国科学院寒区旱区环境与工程研究所奈曼沙漠化研究站，兰州 730000；²中国科学院研究生院, 北京 100039）

收稿日期:2007-04-12 修回日期:1900-01-01 出版日期:2008-02-10 发布日期:2008-02-10

Spatiotemporal variation of soil moisture and its relations with Artemisia halodendron root water content as affected by rainfall.

ZHAO Wei^1,2; ZHANG Tong-hui¹; LIU Xin-ping^1,2; WANG Shao-kun^1,2; LUO Ya-yong^1,2

¹Naiman Desertification Research Station, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; ²Graduate University of Chinese Academy of Sciences, Beijing 100039

Received:2007-04-12 Revised:1900-01-01 Online:2008-02-10 Published:2008-02-10

摘要/Abstract

摘要： 以科尔沁沙地半固定沙丘灌木差巴嘎蒿（Artemisia halodendron）为对象，用土钻取样法和壕沟法研究了2006年生长季降雨后差巴嘎蒿周围土壤和根系含水量的时空分布特征及其相互关系，并计算了该灌丛的水量平衡。结果表明：该灌丛在降雨后对水分有暂时存储作用；降雨结束后，灌丛主干的茎流作用使得灌丛中心位置的土壤含水量高于灌丛丛幅垂直投影1/4和3/4处的土壤含水量；雨后6 h灌丛根系含水量与灌丛中心位置的土壤含水量呈极显著的负相关（r=-0.89，P<0.01）；灌丛根系含水量在雨后126 h内出现胁迫脉冲间歇反应。水量平衡计算表明，灌丛边缘外1 m处土壤蒸散量高于灌丛覆盖区的蒸散量，灌丛覆盖可降低土壤水分蒸散速率。

关键词: 倍蚜冬寄主藓类植物, 匍灯藓属, 光合作用, 光响应曲线, 温度响应曲线

Abstract: By the methods of soil coring and trenching, this paper studied the spatiotemporal variation of soil moisture around the roots of Artemisia halodendron, a native shrub mainly growing on the semifixed sand dunes in Horqin sandy land, before and after rainfall during the growth season of 2006, as well as the relationships between the soil moisture content and the water content of A. halodendron roots. The water balance was also calculated. The results showed that A. halodendron played a temporary storage role after rainfall. Under the action of main stem flow, the soil moisture content at the center of the shrub cluster was much higher than that at the places out of the center. 6 hours after rainfall, the correlation coefficient between the soil moisture content at the center of the shrub cluster and the water content of A. halodendron roots was -0.89 (P<0.01); and 126 hours after rainfall, the water content of A. halodendron roots showed a stresspulse batch reaction. The soil evapotranspiration rate under the shrub cluster was lower than that at the place 1 m away from the edge of the shrub cluster, suggesting that A. halodendron cover decreased soil evapotranspiration rate.

Key words: Winter host mosses of gall aphids, Plagiomnium, Photosynthesis, Light response curve, Temperature response curve

赵玮;张铜会;刘新平;王少昆;罗亚勇 . 差巴嘎蒿灌丛土壤和根系含水量对降雨的响应[J]. 生态学杂志.

ZHAO Wei^1,2; ZHANG Tong-hui¹; LIU Xin-ping^1,2; WANG Shao-kun^1,2; LUO Ya-yong^1,2 . Spatiotemporal variation of soil moisture and its relations with Artemisia halodendron root water content as affected by rainfall. [J]. cje.

[1]	罗光宇, 陈超, 李月灵, 金则新. 光照强度对濒危植物长序榆光合特性的影响 [J]. 生态学杂志, 2021, 40(4): 980-988.
[2]	刘正一, 孙平, 秦松, 李晶晶, 庄龙传, 宋宛霖, 毕远新, 钟志海. 底栖铜藻和漂浮铜藻生长与光合生理的比较 [J]. 生态学杂志, 2021, 40(1): 76-83.
[3]	王璐, 张小琴, 李萍, 张东升, 宗毓铮, 郝兴宇. 温度和CO₂浓度升高对甜椒光合生理和虫害发生的影响 [J]. 生态学杂志, 2020, 39(12): 4022-4030.
[4]	郑春芳, 陈威, 刘伟成, 王海东, 万寒, 陈继浓, 仇建标. 低温胁迫后红树植物秋茄幼苗光合特性及蔗糖代谢的恢复机制 [J]. 生态学杂志, 2020, 39(12): 4048-4056.
[5]	李维,向芬,周凌云,刘红艳,曾泽萱. 氮素减施对茶树光合作用和氮肥利用率的影响 [J]. 生态学杂志, 2020, 39(1): 93-98.
[6]	刘晓彤,李秀珍,闫中正,谢作轮,林世伟. 海三棱藨草对极端高温的生长与生理响应 [J]. 生态学杂志, 2020, 39(1): 110-119.
[7]	杭红涛,吴沿友,张开艳,谭代军,陆娜娜,闵小莹,郭涛,陈磊. 模拟喀斯特不同土壤生境胁迫对刺槐幼苗光合特性及干物质分配的影响 [J]. 生态学杂志, 2019, 38(9): 2648-2654.
[8]	邹京南,曹亮,王梦雪,金喜军,任春元,王明瑶,于奇,张玉先. 外源褪黑素对干旱胁迫下大豆结荚期光合及生理的影响 [J]. 生态学杂志, 2019, 38(9): 2709-2718.
[9]	王艳林,高姗姗,何兴元,李岩,李佩洋,张粤,赵大伟,仲庆林,陈玮. 遮荫对东北地区四种可食用蕨类植物生长和光合特征的影响 [J]. 生态学杂志, 2019, 38(8): 2397-2404.
[10]	钟平安,邵东,黄英金,王强,杨小龙,叶子飘. 不同光环境下辣椒光合特性和瞬时水分利用效率 [J]. 生态学杂志, 2019, 38(7): 2065-2071.
[11]	叶子飘,郑卓,康华靖,王复标,安婷,段世华. 自然条件下中熟籼稻初穗期剑叶光合的气孔和非气孔限制特征 [J]. 生态学杂志, 2019, 38(4): 1004-1012.
[12]	王义婧,李岩,徐胜,何兴元,陈玮,吴娴. 高浓度臭氧对美国薄荷（Monarda didyma L.）叶片光合及抗性生理特征的影响 [J]. 生态学杂志, 2019, 38(3): 696-703.
[13]	王春雪,何光熊,宋子波,樊博,张梦寅,方海东,王艳丹,史亮涛. 元江元谋干热河谷土壤氮磷水平对酸角叶片氮磷含量及光合的影响 [J]. 生态学杂志, 2019, 38(3): 710-718.
[14]	刘婷,马增岭,李慧,徐智广. 光强和硝态氮水平对铜藻(Sargassum horneri)生长和光合生理特性的影响 [J]. 生态学杂志, 2019, 38(3): 762-769.
[15]	杜澜,谢锦忠,赖秋香,陈亮,张玮,陈胜,夏捷,吴炜. 遮荫对绿竹容器苗光合作用及生长的影响 [J]. 生态学杂志, 2019, 38(1): 67-73.