荒漠短命植物地上和地下生产力对极端干旱和降水的响应

doi:10.13287/j.1001-9332.202212.006

应用生态学报 ›› 2022, Vol. 33 ›› Issue (12): 3245-3252.doi: 10.13287/j.1001-9332.202212.006

荒漠短命植物地上和地下生产力对极端干旱和降水的响应

沙亚古丽·及格尔^1,2, 臧永新², 尹本丰², 张署军^1,2, 买买提明·苏来曼^1*, 张元明²

¹新疆大学生命科学与技术学院, 新疆生物资源基因工程重点实验室, 乌鲁木齐 830046;
²中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐 830011

收稿日期:2022-07-20 接受日期:2022-09-28 出版日期:2022-12-15 发布日期:2023-07-05
通讯作者: * E-mail: mamtimin@xju.edu.cn
作者简介:沙亚古丽·及格尔, 女, 1996年生, 硕士研究生。主要从事荒漠植物生产力与水分关系研究。E-mail: 2398645883@qq.com
基金资助:
新疆维吾尔自治区青年自然科学基金项目(2022D01B68)、新疆维吾尔自治区“天池博士”计划项目(Y970000320)和国家自然科学基金项目(U2003214, 32060050)

Responses of aboveground and belowground net primary productivity of ephemeral plants to extreme drought and extreme precipitation

SHAYAGULI·Jigeer^1,2, ZANG Yong-xin², YIN Ben-feng², ZHANG Shu-jun^1,2, MAMTIMIN·Sulayman^1*, ZHANG Yuan-ming²

¹Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China;
²State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China

Received:2022-07-20 Accepted:2022-09-28 Online:2022-12-15 Published:2023-07-05

摘要/Abstract

摘要： 在古尔班通古特沙漠南缘沙垄4个坡位和坡向,设置减少65%和增加65%生长季降水量以模拟极端干旱和极端降水事件,研究极端干旱和极端降水事件对沙垄不同坡位和坡向短命植物层片生产力的影响。结果表明: 极端干旱使地上净初级生产力和地下净初级生产力分别显著降低48.8%和13.7%,极端降水使地上净初级生产力和地下净初级生产力分别显著增加37.9%和23.2%。地上净初级生产力对极端干旱和极端降水的敏感性(0.26和0.21 g·m^-2·mm^-1)显著强于地下净初级生产力的敏感性(0.02和0.03 g·m^-2·mm^-1)。沙垄东坡地上净初级生产力(24.22 g·m^-2)和地下净初级生产力(5.77 g·m^-2)与西坡相比显著增大29.7%和71.7%,而地上净初级生产力和地下净初级生产力对降水变化的敏感性在不同坡位和坡向之间差异不显著。

关键词: 净初级生产力, 短命植物, 极端干旱, 极端降水

Abstract: To examine the effects of extreme drought event and extreme precipitation event on productivity of ephemeral plant, we experimentally reduced and increased growing season precipitation amounts by 65% across four slope positions and aspects along sand dunes in the southern edge of the Gurbantünggüt Desert. The results showed that extreme drought significantly reduced aboveground net primary productivity (ANPP) and belowground net primary productivity (BNPP) by 48.8% and 13.7%, respectively, and that extreme precipitation significantly increased ANPP and BNPP by 37.9% and 23.2%, respectively. The sensitivity of ANPP (0.26 and 0.21 g·m^-2·mm^-1) to extreme drought and extreme precipitation was significantly higher than that of BNPP (0.02 and 0.03 g·m^-2·mm^-1). In addition, ANPP (24.22 g·m^-2) and BNPP (5.77 g·m^-2) on the east side of sand dune were significantly increased by 29.7% and 71.7% compared with those on the west side. There was no significant difference in the sensitivity of ANPP and BNPP to precipitation change among different slope positions and aspects.

Key words: net primary productivity, ephemeral plant, extreme drought, extreme precipitation

沙亚古丽·及格尔, 臧永新, 尹本丰, 张署军, 买买提明·苏来曼, 张元明. 荒漠短命植物地上和地下生产力对极端干旱和降水的响应[J]. 应用生态学报, 2022, 33(12): 3245-3252.

SHAYAGULI·Jigeer, ZANG Yong-xin, YIN Ben-feng, ZHANG Shu-jun, MAMTIMIN·Sulayman, ZHANG Yuan-ming. Responses of aboveground and belowground net primary productivity of ephemeral plants to extreme drought and extreme precipitation[J]. Chinese Journal of Applied Ecology, 2022, 33(12): 3245-3252.

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荒漠短命植物地上和地下生产力对极端干旱和降水的响应

Responses of aboveground and belowground net primary productivity of ephemeral plants to extreme drought and extreme precipitation

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