植物研究 ›› 2022, Vol. 42 ›› Issue (5): 896-909.doi: 10.7525/j.issn.1673-5102.2022.05.021
庄伟伟, 王明明
收稿日期:
2021-04-20
出版日期:
2022-09-20
发布日期:
2022-09-15
作者简介:
庄伟伟(1986—),女,副教授,研究方向为干旱区植物生理生态。
基金资助:
Weiwei ZHUANG, Mingming WANG
Received:
2021-04-20
Online:
2022-09-20
Published:
2022-09-15
Supported by:
摘要:
为深入了解荒漠植物营养元素计量特征,认识元素间的交互作用,揭示不同生长期、不同沙丘部位植物元素含量差异。以古尔班通古特沙漠8种优势草本植物(4种1年生植物,4种短命植物)为研究对象,采集不同生长期(旺盛期、枯萎期)、不同沙丘部位(坡上、腹地)的植株,测定全株植物的10种营养元素(C、N、P、K、Na、Mg、Al、Mn、Cu、Zn)。结果表明:(1)8种植物元素含量存在显著差异,体现了植物因遗传特性不同而对元素选择吸收的特点,含量为:C(230.19~401.82 mg·g-1)、N(11.31~18.85 mg·g-1)、P(0.95~2.08 mg·g-1)、K(16.12~29.79 mg·g-1)、Na(0.88~3.31 mg·g-1)、Mg(3.38~5.31 mg·g-1)、Al(0.33~1.99 mg·g-1)、Mn(51.35~105.32 mg·kg-1)、Cu(4.14~6.38 mg·kg-1)、Zn(11.64~21.43 mg·kg-1)。不同种的元素含量分布格局基本相似,大小排序为:C>N>K> Mg>Na>P>Al>Mn>Zn>Cu,典型特征为富K,贫Cu、Zn,属于N制约性植物,表明环境对各类植物元素含量的一致影响。(2)元素含量受物种、生长期和沙丘部位的影响显著。4种黎科植物(Chenopodiaceae)Na含量显著比4种短命植物高。与生长旺盛期相比,8种植物在枯萎期的C、N、P、Mg、Mn、Cu、Zn含量普遍降低,而Na、K含量有不同幅度的升高,并且碱蓬、沙蓬的K含量显著升高。受土壤水分和养分丰富程度的影响,沙丘腹地植物元素含量普遍比坡上同种植物高。(3)相关性分析表明:C与P,N与Na、Mg、Cu、Zn,K与P、Al,Na与Mg,Mn与Na、Mg、Cu,Zn与Cu之间具有极显著正相关关系(P≤0.001),P与Cu,C与Cu、Zn,K与Mn、Cu、Zn之间具有极显著负相关关系(P≤0.001)。综上所述,荒漠植物元素含量的这些特征体现了其对干旱半干旱地区气候和土壤等生存环境的适应性。
中图分类号:
庄伟伟, 王明明. 荒漠地区8种草本植物营养元素含量的比较分析[J]. 植物研究, 2022, 42(5): 896-909.
Weiwei ZHUANG, Mingming WANG. Comparative Analysis of Nutrient Elements of Eight Herbaceous Plants in Desert Area[J]. Bulletin of Botanical Research, 2022, 42(5): 896-909.
表1
8种草本植物的分类信息、生活型和采样期
科 Family | 物种 Species | 生活型 Life form | 采样期 Sampling period (Month-Day) |
---|---|---|---|
黎科 Chenopodiaceae | 碱蓬 Suaeda glauca | 一年生植物 Annual plant | 6月3日 7月10日 |
沙蓬 Agriophyllum sqarrosum | 一年生植物 Annual plant | 6月3日 7月10日 | |
雾冰藜 Bassssia dasyphylla | 一年生植物 Annual plant | 6月3日 7月10日 | |
角果藜 Ceratocarpus arenarius | 一年生植物 Annual plant | 6月3日 7月10日 | |
菊科 Compositae | 飘带果 Lactuca undulata | 短命植物 Ephemeral plant | 4月22日 5月22日 |
琉苞菊 Hyalea pulchella | 短命植物 Ephemeral plant | 4月22日 5月22日 | |
紫草科 Boraginaceae | 假狼紫草 Nonea caspica | 短命植物 Ephemeral plant | 4月22日 5月22日 |
牻牛儿苗科 Geraniaceae | 尖喙牻牛儿苗 Erodium oxyrrhynchum | 短命植物 Ephemeral plant | 4月22日 5月22日 |
表2
沙丘坡上与沙丘腹地的土壤养分状况
土层深度 Soil depth(D) /cm | 沙丘部位 Dune areas | 有机碳 Organic C/(mg·g-1) | 总氮 Total N/(mg·g-1) | 总磷 Total P/(mg·g-1) |
---|---|---|---|---|
D≤5 | 坡上Slopes | 2.15±0.38** | 0.16±0.03** | 0.36±0.02** |
腹地Hinterland | 3.23±0.50 | 0.23±0.04 | 0.44±0.02 | |
5<D≤10 | 坡上Slopes | 1.46±0.19** | 0.08±0.02 | 0.35±0.02** |
腹地Hinterland | 2.14±0.22 | 0.09±0.02 | 0.39±0.03 | |
10<D≤15 | 坡上Slopes | 1.18±0.21** | 0.07±0.01 | 0.34±0.01 |
腹地Hinterland | 1.63±0.37 | 0.08±0.01 | 0.35±0.02 |
表3
物种、生长期、沙丘部位和它们的相互作用对植物营养元素含量影响的方差分析
变异来源 Sources of variation | 自由度 df | P值 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
C | N | P | K | Na | Mg | Al | Mn | Cu | Zn | ||
物种Species | 7 | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** |
生长期Growing periods | 1 | <0.001** | <0.001** | <0.001** | 0.029* | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** | <0.001** |
沙丘部位Dune areas | 1 | 0.029* | <0.001** | 0.817 | 0.213 | 0.014* | <0.001* | <0.001** | <0.001** | <0.001** | <0.001** |
物种×生长期Species×Growing periods | 7 | 0.007* | <0.001** | <0.001** | <0.001** | 0.001** | 0.003* | 0.011** | 0.007** | 0.044* | 0.436 |
物种×沙丘部位Species×Dune areas | 7 | 0.008** | 0.042* | 0.007** | <0.001** | 0.003* | <0.001** | 0.040* | 0.047* | 0.002* | 0.065 |
生长期×沙丘部位 Growing periods×Dune areas | 1 | 0.840 | 0.052 | 0.078 | 0.561 | 0.617 | 0.463 | 0.612 | 0.065* | 0.180 | 0.250 |
物种×生长期×沙丘部位 Species×Growing periods×Dune areas | 7 | 0.125 | <0.001* | 0.172 | 0.039* | 0.419 | 0.262 | 0.955 | 0.189 | 0.257 | 0.788 |
表4
不同沙丘部位不同生长期8种植物营养元素含量
物种 Species | 指标 Index | 沙丘部位 Dune areas | 生长期Growing periods | 平均 Mean | 变异系数 Cv /% | |
---|---|---|---|---|---|---|
旺盛期 Vigorous period | 枯萎期 Wither period | |||||
碱蓬 S. glauca | C/ (mg·g-1) | 坡上 Slope | 273.40±12.28Aa | 250.87±1.46Ba | 266.88±16.62 | 6.23 |
腹地 Hinterland | 286.80±11.29Aa | 256.43±5.61Ba | ||||
N/ (mg·g-1) | 坡上 Slope | 23.40±2.91Aa | 11.10±0.27Ba | 18.85±6.29 | 33.45 | |
腹地 Hinterland | 27.49±1.02Aa | 13.40±2.13Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 1.38±0.09Ab | 0.93±0.05Bb | 1.26±0.32 | 25.17 | |
腹地 Hinterland | 1.68±0.11Aa | 1.04±0.02Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 18.21±0.48Ba | 21.92±0.87Aa | 18.60±2.57 | 13.83 | |
腹地 Hinterland | 15.16±0.14Bb | 19.12±0.71Ab | ||||
Na/ (mg·g-1) | 坡上 Slope | 2.84±0.22Ab | 2.91±0.20Ab | 3.07±0.27 | 8.69 | |
腹地 Hinterland | 3.21±0.18Aa | 3.31±0.20Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 3.50±0.28Ab | 2.92±0.15Ba | 3.47±0.52 | 15.06 | |
腹地 Hinterland | 4.20±0.25Aa | 3.25±0.15Ba | ||||
Al/ (mg·g-1) | 坡上 Slope | 1.21±0.12Aa | 0.87±0.10Bb | 1.18±0.25 | 21.41 | |
腹地 Hinterland | 1.40±0.32Aa | 1.24±0.08Aa | ||||
Mn (mg·kg-1) | 坡上 Slope | 115.25±9.08Aa | 87.95±9.69Bb | 105.32±16.63 | 15.78 | |
腹地 Hinterland | 119.56±9.04Aa | 98.53±10.57Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 4.53±1.19Ab | 3.54±0.82Bb | 5.54±1.25 | 22.56 | |
腹地 Hinterland | 8.82±1.22Aa | 5.27±0.64Ba | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 22.29±1.13Ab | 17.94±1.64Bb | 21.43±3.11 | 14.50 | |
腹地 Hinterland | 25.07±1.66Aa | 20.42±2.36Ba | ||||
沙蓬 A. sqarrosum | C/ (mg·g-1) | 坡上 Slope | 395.33±4.52Aa | 379.43±5.56Ba | 388.54±9.60 | 2.47 |
腹地 Hinterland | 397.87±3.27Aa | 381.53±6.88Ba | ||||
N/ (mg·g-1) | 坡上 Slope | 15.96±1.04Aa | 9.39±1.45Ba | 12.63±3.02 | 23.91 | |
腹地 Hinterland | 14.36±1.94Aa | 10.82±1.20Aa | ||||
P/ (mg·g-1) | 坡上 Slope | 2.38±0.01Aa | 1.89±0.06Ba | 2.08±0.23 | 11.05 | |
腹地 Hinterland | 2.14±0.06Ab | 1.92±0.22Aa | ||||
K/ (mg·g-1) | 坡上 Slope | 28.58±0.11Ba | 31.35±0.44Aa | 29.79±2.24 | 7.52 | |
腹地 Hinterland | 27.14±0.51Ba | 32.10±1.66Aa | ||||
Na/ (mg·g-1) | 坡上 Slope | 3.30±0.25Aa | 3.42±0.20Aa | 3.31±0.26 | 7.85 | |
腹地 Hinterland | 3.01±0.20Bb | 3.49±0.17Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 3.58±0.24Aa | 2.68±0.23Ba | 3.38±0.56 | 17.46 | |
腹地 Hinterland | 4.10±0.27Aa | 3.15±0.24Ba | ||||
Al/ (mg·g-1) | 坡上 Slope | 0.58±0.07Aa | 0.52±0.03Ba | 0.56±0.05 | 8.93 | |
腹地 Hinterland | 0.58±0.04Aa | 0.55±0.07Aa | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 50.23±8.24Ab | 42.42±2.80Ab | 52.42±10.24 | 19.53 | |
腹地 Hinterland | 62.36±11.67Aa | 54.68±7.22Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 4.68±0.74Ab | 3.81±1.05Bb | 5.36±1.53 | 28.54 | |
腹地 Hinterland | 6.91±1.25Aa | 6.04±1.02Ba | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 14.21±1.88Ab | 10.29±0.71Bb | 13.11±2.53 | 19.30 | |
腹地 Hinterland | 15.68±2.02Aa | 12.26±1.51Ba | ||||
雾冰黎 B. dasyphylla | C/ (mg·g-1) | 坡上 Slope | 237.83±2.68Ab | 214.50±8.48Ba | 230.19±16.02 | 6.96 |
腹地 Hinterland | 250.73±2.50Aa | 217.70±1.66Ba | ||||
N/ (mg·g-1) | 坡上 Slope | 19.32±1.01Aa | 10.33±2.11Ba | 14.85±4.37 | 29.43 | |
腹地 Hinterland | 18.37±0.39Aa | 11.38±1.19Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 1.12±0.02Aa | 0.88±0.02Ba | 0.95±0.10 | 10.53 | |
腹地 Hinterland | 0.93±0.02Ab | 0.88±0.04Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 17.00±0.22Aa | 14.90±0.19Aa | 16.38±1.03 | 6.29 | |
腹地 Hinterland | 16.87±0.27Aa | 16.75±1.13Aa | ||||
Na/ (mg·g-1) | 坡上 Slope | 1.66±0.09Ab | 1.70±0.09Aa | 1.80±0.16 | 8.89 | |
腹地 Hinterland | 1.90±0.12Aa | 1.95±0.08Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 4.92±0.27Ab | 4.07±0.18Bb | 5.10±0.88 | 17.25 | |
腹地 Hinterland | 6.29±0.57Aa | 5.12±0.25Ba | ||||
Al/ (mg·g-1) | 坡上 Slope | 2.17±0.33Aa | 1.81±0.18Aa | 1.99±0.26 | 13.07 | |
腹地 Hinterland | 2.16±0.23Aa | 1.83±0.06Aa | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 94.11±13.81Ab | 78.97±10.04Bb | 100.76±22.03 | 21.86 | |
腹地 Hinterland | 131.48±7.51Aa | 98.49±10.97Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 5.49±1.09Ab | 4.42±0.59Bb | 5.52±1.02 | 18.48 | |
腹地 Hinterland | 6.43±0.83Aa | 5.74±0.65Ba | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 14.25±1.13Ab | 9.77±1.16Bb | 13.29±2.82 | 21.22 | |
腹地 Hinterland | 16.18±2.03Aa | 12.98±2.09Ba | ||||
角果藜 C. arenarius | C/ (mg·g-1) | 坡上 Slope | 398.27±1.72Ba | 411.87±7.19Aa | 401.82±8.38 | 2.09 |
腹地 Hinterland | 396.17±3.26Aa | 400.97±10.06Aa | ||||
N/ (mg·g-1) | 坡上 Slope | 16.49±0.43Ab | 13.34±2.15Ba | 15.52±4.74 | 30.54 | |
腹地 Hinterland | 22.09±0.87Aa | 10.17±1.32Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 1.71±0.01Aa | 1.32±0.10Ba | 1.51±0.20 | 13.25 | |
腹地 Hinterland | 1.67±0.01Ab | 1.33±0.06Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 17.44±0.16Ab | 18.60±0.21Aa | 18.25±1.07 | 5.86 | |
腹地 Hinterland | 19.76±0.05Aa | 17.21±0.06Ba | ||||
Na/ (mg·g-1) | 坡上 Slope | 2.93±0.32Bb | 3.30±0.31Aa | 3.18±0.28 | 8.81 | |
腹地 Hinterland | 3.26±0.19Aa | 3.24±0.26Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 5.74±0.20Aa | 4.59±0.21Ba | 5.31±0.55 | 10.36 | |
腹地 Hinterland | 5.81±0.22Aa | 5.11±0.19Ba | ||||
Al/ (mg·g-1) | 坡上 Slope | 1.28±0.23Aa | 1.25±0.10Aa | 1.38±0.18 | 13.04 | |
腹地 Hinterland | 1.53±0.13Aa | 1.46±0.10Aa | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 74.08±12.21Ab | 78.29±13.32Ab | 89.68±19.27 | 21.49 | |
腹地 Hinterland | 111.87±16.85Aa | 94.49±9.97Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 5.24±1.33Ab | 4.05±0.06Bb | 5.57±1.66 | 19.80 | |
腹地 Hinterland | 7.76±1.40Aa | 5.13±0.63Ba | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 19.21±1.94Aa | 14.97±1.34Ba | 16.83±2.15 | 12.77 | |
腹地 Hinterland | 16.57±1.72Ab | 16.57±1.72Aa | ||||
飘带果 L. undulata | C/ (mg·g-1) | 坡上 Slope | 392.20±9.45Aa | 384.73±10.01Aa | 386.85±10.33 | 2.67 |
腹地 Hinterland | 388.23±14.28Aa | 382.23±10.45Aa | ||||
N/ (mg·g-1) | 坡上 Slope | 12.35±1.01Aa | 9.26±0.97Ba | 11.53±2.37 | 20.56 | |
腹地 Hinterland | 14.43±1.81Aa | 10.08±1.04Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 2.28±0.17Aa | 1.27±0.22Ba | 1.73±0.51 | 29.48 | |
腹地 Hinterland | 2.12±0.04Aa | 1.26±0.14Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 17.89±1.13Ab | 18.50±1.16Ab | 19.11±1.60 | 8.37 | |
腹地 Hinterland | 19.84±1.42Aa | 20.22±2.00Aa | ||||
Na/ (mg·g-1) | 坡上 Slope | 1.95±0.07Ba | 2.70±0.27Aa | 2.40±0.40 | 16.67 | |
腹地 Hinterland | 2.19±0.18Ba | 2.74±0.26Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 3.49±0.58Ab | 3.05±0.07Ab | 4.17±1.05 | 25.18 | |
腹地 Hinterland | 5.41±0.55Aa | 4.74±0.15Ba | ||||
Al/ (mg·g-1) | 坡上 Slope | 0.52±0.05Aa | 0.43±0.02Ab | 0.54±0.10 | 18.52 | |
腹地 Hinterland | 0.64±0.11Aa | 0.57±0.04Aa | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 85.54±9.55Ab | 79.44±9.07Aa | 87.81±14.11 | 16.07 | |
腹地 Hinterland | 107.95±6.76Aa | 78.32±4.44Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 4.93±0.21Aa | 4.60±0.12Aa | 4.89±0.52 | 10.63 | |
腹地 Hinterland | 4.92±0.66Aa | 5.08±0.89Aa | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 16.51±3.77Ab | 14.92±1.00Bb | 17.21±2.83 | 16.44 | |
腹地Hinterland | 19.62±2.57Aa | 17.80±2.10Ba | ||||
琉苞菊 H. pulchella | C/ (mg·g-1) | 坡上 Slope | 378.50±23.11Aa | 364.10±7.93Aa | 377.63±17.38 | 4.60 |
腹地 Hinterland | 396.17±3.26Aa | 367.92±11.26Ba | ||||
N/ (mg·g-1) | 坡上 Slope | 14.39±1.17Aa | 12.30±1.13Ba | 13.32±2.23 | 16.74 | |
腹地 Hinterland | 15.28±2.80Aa | 11.32±1.13Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 1.84±0.14Aa | 1.20±0.12Ba | 1.48±0.32 | 21.62 | |
腹地 Hinterland | 1.66±0.10Aa | 1.22±0.23Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 15.29±1.09Aa | 16.09±1.00Aa | 16.20±1.32 | 8.15 | |
腹地 Hinterland | 16.59±1.72Aa | 16.85±1.53Aa | ||||
Na/ (mg·g-1) | 坡上 Slope | 0.95±0.03Aa | 0.94±0.08Aa | 1.03±0.12 | 11.65 | |
腹地 Hinterland | 1.12±0.09Aa | 1.11±0.12Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 3.26±0.11Ab | 2.97±0.08Ab | 3.55±0.60 | 16.90 | |
腹地 Hinterland | 4.44±0.36Aa | 3.52±0.17Ba | ||||
Al/ (mg·g-1) | 坡上 Slope | 0.56±0.03Aa | 0.47±0.02Bb | 0.64±0.14 | 21.88 | |
腹地 Hinterland | 0.76±0.12Aa | 0.76±0.06Aa | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 94.70±9.16Ab | 67.40±6.56Bb | 89.50±19.96 | 22.30 | |
腹地 Hinterland | 115.17±13.27Aa | 78.75±8.97Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 4.33±0.18Aa | 3.09±0.40Bb | 4.14±0.82 | 19.81 | |
腹地 Hinterland | 4.61±0.77Aa | 4.54±0.79Aa | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 12.18±1.60Ab | 8.45±1.69Bb | 11.64±2.43 | 20.88 | |
腹地 Hinterland | 13.98±0.79Aa | 11.97±1.57Ba | ||||
假狼紫草 N. caspica | C/ (mg·g-1) | 坡上 Slope | 383.07±18.83Aa | 367.17±7.31Aa | 373.72±14.74 | 3.94 |
腹地 Hinterland | 362.30±9.30Aa | 382.33±14.10Aa | ||||
N/ (mg·g-1) | 坡上 Slope | 12.45±1.24Aa | 10.40±0.75Ba | 11.31±1.76 | 15.56 | |
腹地 Hinterland | 12.44±1.15Aa | 9.93±0.58Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 1.48±0.08Aa | 0.89±0.08Ba | 1.32±0.33 | 25.00 | |
腹地 Hinterland | 1.58±0.08Aa | 0.95±0.06Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 16.37±1.14Aa | 15.34±0.67Aa | 16.12±1.27 | 7.88 | |
腹地 Hinterland | 16.04±1.92Aa | 16.72±1.38Aa | ||||
Na/ (mg·g-1) | 坡上 Slope | 0.86±0.11Aa | 1.13±0.10Aa | 0.88±0.22 | 25.00 | |
腹地 Hinterland | 0.67±0.25Ab | 0.85±0.12Ab | ||||
Mg/ (mg·g-1) | 坡上 Slope | 5.66±0.52Aa | 4.98±0.20Ba | 5.29±0.45 | 8.51 | |
腹地 Hinterland | 5.37±0.50Aa | 5.16±0.41Aa | ||||
Al/ (mg·g-1) | 坡上 Slope | 0.81±0.04Ab | 0.77±0.03Aa | 0.83±0.06 | 7.23 | |
腹地 Hinterland | 0.93±0.02Aa | 0.82±0.02Ba | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 48.21±1.79Ab | 37.89±4.82Bb | 51.35±10.67 | 20.78 | |
腹地 Hinterland | 60.38±9.13Aa | 58.91±4.62Aa | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 4.82±.90Ab | 4.35±0.60Ab | 5.48±1.23 | 24.09 | |
腹地 Hinterland | 6.79±1.15Aa | 5.94±0.58Ba | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 19.28±1.75Ab | 15.19±1.69Bb | 19.26±3.46 | 17.96 | |
腹地 Hinterland | 23.76±1.82Aa | 18.81±1.12Ba | ||||
尖喙牻牛儿苗 E. oxyrrhynchum | C/ (mg·g-1) | 坡上 Slope | 361.37±22.22Aa | 339.30±46.23Aa | 368.02±30.16 | 8.20 |
腹地 Hinterland | 385.07±7.94Aa | 386.33±8.12Aa | ||||
N/ (mg·g-1) | 坡上 Slope | 14.40±0.82Ab | 10.31±0.84Ba | 13.52±3.06 | 22.63 | |
腹地 Hinterland | 17.69±1.19Aa | 11.67±0.96Ba | ||||
P/ (mg·g-1) | 坡上 Slope | 2.15±0.16Aa | 1.25±0.11Ba | 1.72±0.49 | 28.49 | |
腹地 Hinterland | 2.21±0.15Aa | 1.29±0.11Ba | ||||
K/ (mg·g-1) | 坡上 Slope | 23.72±1.46Aa | 20.76±1.67Ba | 22.63±1.94 | 8.57 | |
腹地 Hinterland | 24.29±0.84Aa | 21.76±1.67Ba | ||||
Na/ (mg·g-1) | 坡上 Slope | 1.36±0.03Ba | 1.80±0.19Aa | 1.59±0.26 | 16.35 | |
腹地 Hinterland | 1.39±0.03Ba | 1.82±0.22Aa | ||||
Mg/ (mg·g-1) | 坡上 Slope | 4.24±0.19Ab | 4.20±0.17Ab | 4.55±0.38 | 8.35 | |
腹地 Hinterland | 4.92±0.17Aa | 4.82±0.13Aa | ||||
Al/ (mg·g-1) | 坡上 Slope | 0.30±0.03Aa | 0.30±0.01Ab | 0.33±0.05 | 15.15 | |
腹地 Hinterland | 0.37±0.05Aa | 0.37±0.03Aa | ||||
Mn/ (mg·kg-1) | 坡上 Slope | 58.54±7.42Ab | 39.65±7.78Bb | 53.89±11.92 | 22.12 | |
腹地 Hinterland | 67.08±4.93Aa | 50.29±4.94Ba | ||||
Cu/ (mg·kg-1) | 坡上 Slope | 5.64±1.04Ab | 5.50±0.60Ab | 6.38±1.15 | 18.03 | |
腹地 Hinterland | 7.46±1.12Aa | 6.91±0.64Ba | ||||
Zn/ (mg·kg-1) | 坡上 Slope | 18.88±2.57Aa | 16.07±1.42Ba | 17.52±2.32 | 13.24 | |
腹地 Hinterland | 18.62±3.17Aa | 16.52±1.28Ba |
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