温带草原区猪毛蒿群落种间关系对降水梯度的响应

doi:10.13287/j.1001-9332.202608.008

应用生态学报 ›› 2026, Vol. 37 ›› Issue (8): 2585-2594.doi: 10.13287/j.1001-9332.202608.008

温带草原区猪毛蒿群落种间关系对降水梯度的响应

李恬恬^1,2,3, 陈林^1,2,3*, 楼科尔^1,2,3, 吴晓莉^1,2,3, 王富富⁴, 马静⁴, 庞丹波^1,2,3

¹宁夏大学生态环境学院, 银川 750021;
²宁夏大学西北退化生态系统恢复与重建教育部重点实验室, 银川 750021;
³宁夏大学西北土地退化与生态恢复国家重点实验室培育基地, 银川 750021;
⁴宁夏大学林业与草业学院, 银川 750021

收稿日期:2026-04-12 修回日期:2026-06-09 出版日期:2026-08-18 发布日期:2027-02-18
通讯作者: ^*E-mail: chenlin198388@163.com
作者简介:李恬恬, 女, 1999年生, 硕士研究生。主要从事恢复生态学研究。E-mail: 1985934954@qq.com
基金资助:
国家自然科学基金项目(32360423)、宁夏自然科学基金项目(2025AAC030143)、宁夏自然科学基金创新群体项目(2024AAC01004)和宁夏回族自治区重点研发计划项目(2026BEG02048)资助。

Response of interspecific relationships in Artemisia scoparia community to precipitation gradient in tempe-rate steppe region

LI Tiantian^1,2,3, CHEN Lin^1,2,3*, LOU Keer^1,2,3, WU Xiaoli^1,2,3, WANG Fufu⁴, MA Jing⁴, PANG Danbo^1,2,3

¹School of Ecology and Environment, Ningxia University, Yinchuan 750021, China;
²Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystems in Northwest China, Ningxia University, Yinchuan 750021, China;
³Breeding Base of the State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China;
⁴School of Forestry and Grassland Science, Ningxia University, Yinchuan 750021, China

Received:2026-04-12 Revised:2026-06-09 Online:2026-08-18 Published:2027-02-18

摘要/Abstract

摘要： 本研究以温带草原区沿天然降水梯度分布的荒漠(年降水量为220.18 mm)、荒漠草原(287.71 mm)和温性典型草原(399.11 mm)中的猪毛蒿群落为研究对象,分析了其种间关系和群落稳定性。结果表明:在不同降水量样地中共记录草本植物15种,以禾本科和菊科为主。猪毛蒿在各样地中均具有较高的重要值,但在温性典型草原的重要值(6.5)低于荒漠(13.9)和荒漠草原(21.0)。群落中多数物种间生态位重叠度较低,生态位重叠指数O_ik<0.5的比例在荒漠、荒漠草原和温性典型草原中分别为86.7%、89.3%和97.8%,物种间资源利用分化明显。荒漠草原的猪毛蒿生态位宽度(Levins生态位宽度指数为7.70,Shannon生态位宽度指数为2.22)高于荒漠和温性典型草原。研究区植物物种间以负联结为主,群落结构相对松散,荒漠、荒漠草原和温性典型草原的猪毛蒿群落均未达到稳定状态,处于非稳定的动态演替阶段,其中荒漠草原的猪毛蒿群落具有相对较高的稳定性。

关键词: 猪毛蒿, 降水梯度, 生态位, 种间联结, 群落稳定性

Abstract: We investigated Artemisia scoparia community across a natural precipitation gradient in the temperate steppe region, including desert (mean annual precipitation was 220.18 mm), desert steppe (287.71 mm), and typical steppe (399.11 mm) habitats, and analyzed interspecific relationships and community stability. The results showed that a total of 15 herbaceous species were recorded across three types of habitats, dominated by species from Poaceae and Asteraceae. A. scoparia had relatively high importance values at all sites, indicating its dominance in the plant communities. However, its importance value in the typical steppe (6.5) was lower than that in areas with less precipitation, being 13.9 in the desert and 21.0 in the desert steppe. The niche overlap among most plant species in the community was low, with the proportion of niche overlap indices (O_ik) <0.5 being 86.7%, 89.3%, and 97.8% in desert, desert steppe, and typical steppe, respectively, indicating significant differentiation of resource utilization among species. The niche breadth of A. scoparia in desert steppe (Levins’s niche breadth index of 7.70 and Shannon’s niche breadth index of 2.22) was higher than that in desert and typical steppe. Plant species in the study area were mainly negatively associated, and the community structure was relatively loose. A. scoparia communities in desert, desert steppe, and typical steppe did not reach a stable state and were in a non-stable dynamic succession stage, with the A. scoparia community in desert steppe exhibiting relatively higher stability.

Key words: Artemisia scoparia, precipitation gradient, ecological niche, interspecific association, community stability

李恬恬, 陈林, 楼科尔, 吴晓莉, 王富富, 马静, 庞丹波. 温带草原区猪毛蒿群落种间关系对降水梯度的响应[J]. 应用生态学报, 2026, 37(8): 2585-2594.

LI Tiantian, CHEN Lin, LOU Keer, WU Xiaoli, WANG Fufu, MA Jing, PANG Danbo. Response of interspecific relationships in Artemisia scoparia community to precipitation gradient in tempe-rate steppe region[J]. Chinese Journal of Applied Ecology, 2026, 37(8): 2585-2594.

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温带草原区猪毛蒿群落种间关系对降水梯度的响应

Response of interspecific relationships in Artemisia scoparia community to precipitation gradient in tempe-rate steppe region

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