Plant Leaf Traits in Minqin Oasis-desert Transition Zone

doi:10.7525/j.issn.1673-5102.2022.01.008

Abstract

Abstract:

To explore the adaptability of plants to the environment and provide a theoretical basis for the restoration and reconstruction of vegetation in Minqin oasis-desert transition zone， 20 kinds of main plant were used， 6 functional characters of leaves were determined， variation characteristics and correlation of leaf traits were analyzed， and the difference of leaf traits of different functional groups were compared respectively. The results showed that： ①There were interspecific differences and different degrees of variation in leaf traits， the variation range from 14.11% to 47.63%， the variation coefficient of ChlC was the largest， while that of LCC was the smallest. ②LDMC with ChlC or LCC showed extremely significant positive correlation（P<0.01）， ChlC with LCC showed extremely significant positive correlation（P<0.01）， while the correlation between other leaf traits was not significant. ③There were significant differences in leaf traits among different functional groups. LDMC， ChlC and LCC in legumes were significantly higher than those in chenopodiaceae plants（P<0.01）. The SLA of herb leaves was significantly higher than that of shrub plants（P<0.01）. SLA and LNC of annual plants were significantly higher than those of perennial plants（P<0.05）. The LDMC of perennial leaves was significantly higher than annual leaves（P<0.01）. The content of C in leaves of perennial plants was significantly higher than that of annual plants（P<0.05）. LDMC and ChlC of C₃ plants were significantly higher than that of C₄ plants（P<0.05）. The δ¹³C of C₄plants was significantly higher than that of C₃ plants（P<0.01）. LCC content in leaves of C₃ plants was significantly higher than that of C₄ plants（P<0.05）.

Key words: leaf traits, coefficient variation, functional group, Minqin

CLC Number:

Q944.56

Fei Wang, Shujiang Guo, Baoli Fan, Fugui Han, Fanglin Wang, Weixing Zhang, Yunian Zhang. Plant Leaf Traits in Minqin Oasis-desert Transition Zone[J]. Bulletin of Botanical Research, 2022, 42(1): 71-80.

Figures/Tables 7

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植物种及拉丁名 Species	科及拉丁名 Family	生长型 Growth form	光合型 Photosynthetic type	生活史 Life history
梭梭 Haloxylon ammodendron	藜科 Chenopodiaceae	灌木 Shrub	C₄	多年生 Perennial
沙拐枣 Calligonum mongolicum	藜科 Chenopodiaceae	灌木 Shrub	C₄	多年生 Perennial
白刺 Nitraria tangutorum	蒺藜科 Zygophyllaceae	灌木 Shrub	C₃	多年生 Perennial
沙蒿 Artemisia desertorum	菊科 Compositae	灌木 Shrub	C₃	多年生 Perennial
芦苇 Phragmites australis	禾本科 Gramineae	草本 Herbage	C₃	多年生 Perennial
霸王 Zygophyllum xanthoxylum	蒺藜科 Zygophyllaceae	灌木 Shrub	C₃	多年生 Perennial
沙木蓼 Atraphaxis frutescens	蓼科 Polygonaceae	灌木 Shrub	C₃	多年生 Perennial
柠条锦鸡儿 Caragana korshinskii	豆科 Leguminosae	灌木 Shrub	C₃	多年生 Perennial
花棒 Hedysarum scoparium	豆科 Leguminosae	灌木 Shrub	C₃	多年生 Perennial
多枝柽柳 Tamarix ramosissima	柽柳科 Tamaricaceae	灌木 Shrub	C₃	多年生 Perennial
花花柴 Karelinia caspia	菊科 Compositae	草本 Herbage	C₃	多年生 Perennial
沙冬青 Ammopiptanthus mongolicus	豆科 Leguminosae	灌木 Shrub	C₃	多年生 Perennial
砂引草 Tournefortia sibirica	紫草科 Boraginaceae	草本 Herbage	C₃	多年生 Perennial
甘草 Glycyrrhiza uralensis	豆科 Leguminosae	草本 Herbage	C₃	多年生 Perennial
猪毛菜 Salsola collina	藜科 Chenopodiaceae	草本 Herbage	C₄	一年生 Therophytes
盐生草 Halogeton glomeratus	藜科 Chenopodiaceae	草本 Herbage	C₄	一年生 Therophytes
沙蓬 Agriophyllum squarrosum	藜科 Chenopodiaceae	草本 Herbage	C₄	一年生 Therophytes
五星蒿 Bassia dasyphylla	藜科 Chenopodiaceae	草本 Herbage	C₄	一年生 Therophytes
碟果虫实 Corispermum patelliforme	藜科 Chenopodiaceae	草本 Herbage	C₃	一年生 Therophytes
苦豆子 Sophora alopecuroides	豆科 Leguminosae	草本 Herbage	C₃	多年生 Perennial

叶性状 Leaf Traits	平均值 Average	最大值 Max	最小值 Min	中值 Median	标准差 SD	变异系数 CV /%
比叶面积SLA /（cm²·mg^-1）	0.057±0.006	0.095	0.023	0.060	0.026	46.07
干物质含量LDMC /%	23.96±2.21	39.570	9.340	23.220	9.890	41.27
叶绿素含量ChlC /（mg·g^-1 FW）	1.13±0.12	2.370	0.500	0.980	0.540	47.63
碳同位素δ¹³C /‰	-23.29±1.08	-13.810	-27.760	-25.320	4.820	20.70
全碳含量LCC /（mg·g^-1）	406.50±12.83	506.320	298.750	413.950	57.340	14.11
全氮含量LNC /（mg·g^-1）	28.60±0.99	35.110	19.050	28.850	4.450	15.55

性状 Leaf traits	比叶面积 SLA	干物质含量 LDMC	叶绿素含量 ChlC	碳同位素 δ¹³C	全碳含量 LCC	全氮含量 LNC
比叶面积 SLA	1
干物质含量 LDMC	-0.352	1
叶绿素含量ChlC	0.070	0.766^**	1
碳同位素 δ¹³C	-0.010	-0.191	-0.401	1
全碳含量 LCC	-0.312	0.816^**	0.711^**	-0.364	1
全氮含量 LNC	0.118	-0.018	0.236	0.146	-0.068	1

研究区域 Survey region	比叶面积 SLA /（m²·kg^-1）	干物质含量 LDMC /（g·g^-1）	全碳含量 LCC /（mg·g^-1）	全氮含量 LNC /（mg·g^-1）	参考文献 References
新疆准格尔盆地荒漠 Xinjiang Junggar Basin	14.20	0.07	/	13.69	［13］
毛乌素沙地丘间低地 Inter-dune lowland in the Mu Us Sandy Land	16.29	0.32	416.60	20.36	［14］
宁夏中部干旱带 The arid region of middle Ningxia	15.82	0.23	/	/	［15］
内蒙古科尔沁沙地 Horqin Sand Land	16.90	0.27	/	24.7	［16］
青海省沙珠玉治沙站 Shazhuyu sand control experimental station of Qinghai Province	9.80	/	/	30.2	［17］
民勤绿洲—荒漠过渡带 Minqin oasis-desert transition zone	5.70	0.24	406.50	28.60	本文

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