Journal of Desert Research ›› 2022, Vol. 42 ›› Issue (1): 123-133.DOI: 10.7522/j.issn.1000-694X.2021.00129
Yingtao Sun1(), Yanpeng Yue1, Long Cheng1, Yingjun Pang1, Heju Zhao1, Bingqiang Fei1, Xiaomin Xiu1, Bo Wu1, Yuxing Zhao2, Lin Shi2, Jinjun He2, Xiaohong Jia1(
)
Received:
2021-07-09
Revised:
2121-10-09
Online:
2022-01-20
Published:
2022-01-28
Contact:
Xiaohong Jia
CLC Number:
Yingtao Sun, Yanpeng Yue, Long Cheng, Yingjun Pang, Heju Zhao, Bingqiang Fei, Xiaomin Xiu, Bo Wu, Yuxing Zhao, Lin Shi, Jinjun He, Xiaohong Jia. Responses of growth and biomass allocation of Artemisia ordosica to desertification in Mu Us Sandyland[J]. Journal of Desert Research, 2022, 42(1): 123-133.
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URL: http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2021.00129
沙漠化 程度 | 植被 覆盖 度/% | 流沙面积 占比/% | 一定时间内流沙 面积年均扩大占 该地面积/% | 结皮 盖度 /% | 植物群落特征 | 地形特征 | |
---|---|---|---|---|---|---|---|
优势种 | 草本 | ||||||
潜在 | >60 | <5 | <1 | 64.38 | 油蒿 | 狗尾草、灰绿藜、针茅、沙葱、蒺藜 | 未见沙丘或风蚀坑 |
轻度 | 30—60 | 5—25 | 1—2 | 30.21 | 油蒿 | 狗尾草、 阿尔泰狗娃花、刺藜、细叶苦荬菜、乳浆大戟 | 较平缓沙地、固定沙丘,出现小面积风蚀坑 |
中度 | 10—30 | 25—50 | 2—5 | 13.42 | 油蒿 | 虫实、沙米、乳浆大戟 | 平缓沙地、半固定沙丘,出现较大风蚀坑 |
重度 | <10 | >50 | >5 | 0 | 油蒿 | 沙米 | 大、中型裸沙丘,大型风蚀坑,半流动或流动沙丘 |
Table 1 Basic situation of the plot in different desertification degrees
沙漠化 程度 | 植被 覆盖 度/% | 流沙面积 占比/% | 一定时间内流沙 面积年均扩大占 该地面积/% | 结皮 盖度 /% | 植物群落特征 | 地形特征 | |
---|---|---|---|---|---|---|---|
优势种 | 草本 | ||||||
潜在 | >60 | <5 | <1 | 64.38 | 油蒿 | 狗尾草、灰绿藜、针茅、沙葱、蒺藜 | 未见沙丘或风蚀坑 |
轻度 | 30—60 | 5—25 | 1—2 | 30.21 | 油蒿 | 狗尾草、 阿尔泰狗娃花、刺藜、细叶苦荬菜、乳浆大戟 | 较平缓沙地、固定沙丘,出现小面积风蚀坑 |
中度 | 10—30 | 25—50 | 2—5 | 13.42 | 油蒿 | 虫实、沙米、乳浆大戟 | 平缓沙地、半固定沙丘,出现较大风蚀坑 |
重度 | <10 | >50 | >5 | 0 | 油蒿 | 沙米 | 大、中型裸沙丘,大型风蚀坑,半流动或流动沙丘 |
沙漠化 程度 | 生长情况 | ||||
---|---|---|---|---|---|
密度/(株·m-2) | 高度/cm | 冠幅/m2 | 枯死率/% | 地上生物量/(g·m-2) | |
潜在 | 1.32±0.04a | 40.23±2.00c | 0.63±0.06c | 14.32ab | 706.10a |
轻度 | 0.96±0.01b | 46.53±1.74b | 0.90±0.12b | 12.10b | 528.05b |
中度 | 0.42±0.00c | 45.53±1.25b | 0.84±0.03b | 17.41a | 389.35c |
重度 | 0.09±0.00d | 55.08±1.80a | 1.34±0.08a | 1.12c | 279.96d |
Table 2 Basic situation of Artemisia ordosica populations in different desertification degrees
沙漠化 程度 | 生长情况 | ||||
---|---|---|---|---|---|
密度/(株·m-2) | 高度/cm | 冠幅/m2 | 枯死率/% | 地上生物量/(g·m-2) | |
潜在 | 1.32±0.04a | 40.23±2.00c | 0.63±0.06c | 14.32ab | 706.10a |
轻度 | 0.96±0.01b | 46.53±1.74b | 0.90±0.12b | 12.10b | 528.05b |
中度 | 0.42±0.00c | 45.53±1.25b | 0.84±0.03b | 17.41a | 389.35c |
重度 | 0.09±0.00d | 55.08±1.80a | 1.34±0.08a | 1.12c | 279.96d |
枝条类型 | 指标 | 沙漠化程度 | |||
---|---|---|---|---|---|
潜在 | 轻度 | 中度 | 重度 | ||
营养枝 | 直径/mm | 2.14±0.04c | 2.27±0.04b | 2.33±0.48b | 2.58±0.04a |
长度/cm | 33.90±0.89c | 36.07±0.85c | 42.16±1.22b | 46.68±1.09a | |
生殖枝 | 直径/mm | 1.83±0.03c | 1.89±0.06c | 2.09±0.04b | 2.58±0.07a |
长度/cm | 24.49±0.51c | 26.20±0.84b | 28.31±0.82b | 35.01±0.85a |
Table 3 Morphological characteristics of vegetative and reproductive unit of Artemisia ordosica in different desertification degrees
枝条类型 | 指标 | 沙漠化程度 | |||
---|---|---|---|---|---|
潜在 | 轻度 | 中度 | 重度 | ||
营养枝 | 直径/mm | 2.14±0.04c | 2.27±0.04b | 2.33±0.48b | 2.58±0.04a |
长度/cm | 33.90±0.89c | 36.07±0.85c | 42.16±1.22b | 46.68±1.09a | |
生殖枝 | 直径/mm | 1.83±0.03c | 1.89±0.06c | 2.09±0.04b | 2.58±0.07a |
长度/cm | 24.49±0.51c | 26.20±0.84b | 28.31±0.82b | 35.01±0.85a |
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