江西千烟洲人工针叶林下狗脊蕨群落生物量

doi:10.3773/j.issn.1005-264x.2008.01.010

植物生态学报 ›› 2008, Vol. 32 ›› Issue (1): 88-94.DOI: 10.3773/j.issn.1005-264x.2008.01.010

江西千烟洲人工针叶林下狗脊蕨群落生物量

马泽清¹^,²(), 刘琪王景¹^,^*(), 徐雯佳¹^,², 李轩然¹^,², 刘迎春¹^,²

1 中国科学院地理科学与资源研究所,北京 100101
2 中国科学院研究生院,北京 100049

收稿日期:2006-11-01 接受日期:2007-09-13 出版日期:2008-11-01 发布日期:2008-01-30
通讯作者: 马泽清,刘琪王景
作者简介:* E-mail: liuqijing@gmail.com;
第一联系人：
本研究野外工作承蒙陈永瑞副研究员和林耀明硏究员大力协助,土壤调査与分析得到邹敬东的大力帮助,在此一并致谢
基金资助:
国家重点基础研究发展计划(973计划)(2002CB412506);中国科学院野外台站基金

A PRELIMINARY STUDY ON BIOMASS OF WOODWARDIA JAPONICA COMMUNITY UNDER A CONIFEROUS PLANTATION IN SUBTROPICAL CHINA

MA Ze-Qing¹^,²(), LIU Qi-Jing¹^,^*(), XU Wen-Jia¹^,², LI Xuan-Ran¹^,², LIU Ying-Chun¹^,²

¹Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
²Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received:2006-11-01 Accepted:2007-09-13 Online:2008-11-01 Published:2008-01-30
Contact: MA Ze-Qing,LIU Qi-Jing
About author:* E-mail: mazeqing@gmail.com

摘要/Abstract

摘要：

根据野外调查和实验分析研究了江西省千烟洲人工针叶林下狗脊蕨(Woodwardia japonica)群落的生物量、细根生物量、净初级生产力(Net primary productivity, NPP)、比叶面积(Specific leaf area, SLA)和叶面积指数(Leaf area index, LAI)等。通过叶片参数和地上生物量的相关关系建立了狗脊蕨单株地上生物量估算模型,分别为W1=0.021H¹^.⁵⁴⁵(R²=0.790)和W1=2.518(D²H)^0.616(R²=0.894;H为株高,D为地径)。人工针叶林下灌草层地上生物量为367.8 g·m^-2(52~932 g·m^-2),凋落物为1 631 g·m^-2(672~2 763 g·m^-2),分别占乔木层地上生物量的4.7%(1.55%~13.2%)和20.7%(7.6%~32.1%)。狗脊蕨群落地上生物量和NPP分别为266.6 g·m^-2和88.67 g·m^-2·a^-1,其中狗脊蕨种群占73.7%;地下生物量为212.6 g·m^-2。狗脊蕨的SLA和叶干物质含量(Leaves day mutter content, LDMC)分别为144.0 cm²·g^-1和31.99%,二者之间呈显著负相关;最佳叶面积估算模型为S=21.922 6-0.152L²+0.000 9L³(9.0≤L(叶片长度)≤23.5;1.4≤W(叶片宽度)≤5.9)。狗脊蕨种群的LAI为1.8。土壤含水量对狗脊蕨生物量有显著影响。群落生物量与土壤有机质和全氮含量正相关。

关键词: 狗脊蕨, 生物量, 生物量模型, 叶面积模型, 比叶面积, 叶面积指数

Abstract:

Aims The purpose of the study was to determine the biomass (including fine roots), NPP, specific leaf area (SLA), leaf area index (LAI), and soil nutrients of Woodwardia japonica community under artificial coniferous forest in Jiangxi Province in subtropical China.
Methods Plants in quadrats were harvested and dry weight was measured. Leaf area was measured by scanning, and SLA was represented by the ratio of dry matter to leaf area. LAI of the population was estimated by SLA and leaf biomass.
Important findings The relationships between aboveground biomass (W1) and geometric parameters of W. japonica were established (W1=0.021H ^1.545(R²=0.790) and W1=2.518(D ²H)^0.616(R²=0.894), H: height; D: diameter). The biomass of herbage and shrub under coniferous plantation was 367.8 g·m^-2(52-932 g·m^-2), 4.7% of canopy layer. The accumulated litter under forest was 1 631 g·m^-2(672-2 763 g·m^-2). The above- and under-ground biomass of W. japonica community were 266.6 g·m^-2 and 212.6 g·m^-2, respectively. In total, the biomass of W. japonica population approximately accounted for 73.7% of the whole herbaceous layer. There was a significant negative-correlation between SLA and leaves dry matter content (LDMC). A leaf area (S) model was established in the form of S=21.922 6-0.152L ²+0.000 9L³(9.0≤L: max length of leaf ≤23.5;1.4 ≤ W: max width of leaf ≤5.9).LAI of W. japonica population was estimated as 1.8 m²·m^-2. Soil water content affected biomass of the community. A positive correlation between biomass and soil nitrogen concentration or soil organic matter (SOC) was identified.

Key words: Woodwardia japonica, biomass, biomass model, leaf area model, SLA, LAI

马泽清, 刘琪王景, 徐雯佳, 李轩然, 刘迎春. 江西千烟洲人工针叶林下狗脊蕨群落生物量. 植物生态学报, 2008, 32(1): 88-94. DOI: 10.3773/j.issn.1005-264x.2008.01.010

MA Ze-Qing, LIU Qi-Jing, XU Wen-Jia, LI Xuan-Ran, LIU Ying-Chun. A PRELIMINARY STUDY ON BIOMASS OF WOODWARDIA JAPONICA COMMUNITY UNDER A CONIFEROUS PLANTATION IN SUBTROPICAL CHINA. Chinese Journal of Plant Ecology, 2008, 32(1): 88-94. DOI: 10.3773/j.issn.1005-264x.2008.01.010

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https://www.plant-ecology.com/CN/Y2008/V32/I1/88

图/表 9

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林型 Forest type	湿地松林 Pinus elliottii forest					马尾松林 P.massoniana forest
林型 Forest type	1	2	3	4	5	6	7
坡向 Aspect	SUN	SHA	SHA	SUN	SHA	SHA	SHA
坡度 Slope	<15°	<13°	<13°	<3°	<5°	<3°	<15°
郁闭度 Canopy density	0.90	0.85	0.90	0.85	0.92	0.80	0.95

林型 Forest type	湿地松林 Pinus elliottii forest					马尾松林 P.massoniana forest
林型 Forest type	1	2	3	4	5	6	7
坡向 Aspect	SUN	SHA	SHA	SUN	SHA	SHA	SHA
坡度 Slope	<15°	<13°	<13°	<3°	<5°	<3°	<15°
郁闭度 Canopy density	0.90	0.85	0.90	0.85	0.92	0.80	0.95

生物学指标 Biologic items	最小值 Min	最大值 Max	平均值 Mean	标准差 Standard error	观测数 Number
地上生物量 Aboveground biomass (g)	0.6	14.5	5.2	3.33	70
地径Diameter (mm)	1.67	7.38	4.39	1.21	70
高度Height (cm)	16	131	67.7	24.6	70
冠幅Crown width size (cm)	15	49	29.4	7.63	70
叶柄长 Petiole length (cm)	13	59	33	11.53	70

生物学指标 Biologic items	最小值 Min	最大值 Max	平均值 Mean	标准差 Standard error	观测数 Number
地上生物量 Aboveground biomass (g)	0.6	14.5	5.2	3.33	70
地径Diameter (mm)	1.67	7.38	4.39	1.21	70
高度Height (cm)	16	131	67.7	24.6	70
冠幅Crown width size (cm)	15	49	29.4	7.63	70
叶柄长 Petiole length (cm)	13	59	33	11.53	70

	D	H	C	H₁	D²H	B
D	1.00	0.77	0.67	0.68	0.90	0.83
H		1.00	0.77	0.89	0.89	0.86
C			1.00	0.66	0.72	0.82
H₁				1.00	0.81	0.73
D²H					1.00	0.92
B						1.00

江西千烟洲人工针叶林下狗脊蕨群落生物量

A PRELIMINARY STUDY ON BIOMASS OF WOODWARDIA JAPONICA COMMUNITY UNDER A CONIFEROUS PLANTATION IN SUBTROPICAL CHINA

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Metrics

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模型 Model	R²	F	p
W1=-17.465+2.824D+0.201H+ 0.407C-0.139H₁	0.865	103.82	<0.001
W1=-18.351+2.809D+0.14H+0.42C	0.859	134.20	<0.001
W1=-13.751+3.33D+0.221H	0.818	150.24	<0.001
W1=-14.387+0.225H+0.51C	0.811	144.22	<0.001
W1=-13.836+6.75C	0.692	152.86	<0.001
W1=-7.646+0.347D	0.748	201.75	<0.001
W1=-15.55+1.068H	0.683	146.56	<0.001
W1=4.112+0.732(D²H)	0.844	367.23	<0.001
W1=2.518(D²H)^0.676	0.894	574.49	<0.001
W1=3.156+0.869(D²H)+-0.003(D²H)²	0.847	185.55	<0.001
W1=0.715D²^.⁰¹¹	0.816	301.23	<0.001
W1=1.391×1.659^D	0.794	262.30	<0.001
W1=1.391e⁰^.⁵⁰⁶^D	0.794	262.30	<0.001
W1=e⁽⁰^.³³⁺⁰^.⁵⁰⁶^D⁾	0.794	262.30	<0.001
W1=0.021H¹^.⁵⁴⁵	0.790	256.39	<0.001
W1=e⁽⁴^.^233+(-6^.⁷¹⁾^/D⁾	0.773	231.20	<0.001

回归方程 Model	R²	F	p
S=-40.394 9+4.712 5L	0.780	134.75	<0.001
S=21.531 1+5.486 4W	0.109	4.63	0.038
S=-44.867 9+4.551 3L+2.105 2W	0.795	71.81	<0.001
S=59.134 4-7.914 1L+0.377 8L²	0.859	113.04	<0.001
S=21.922 6-0.152L²+0.000 9L³	0.867	120.44	<0.001
S=3.929 4×1.136 2L	0.809	160.77	<0.001
S=39.294e^{0.127 6}^L	0.809	160.77	<0.001

样方号 Plot number		1	2	3	4	5	6	7	平均Mean
地上总生物量 Total aboveground biomass (g·m^-2)		209.7	169.8	434.0	298.0	407.0	135.9	212.1	266.6
狗脊蕨 Woodwardia japonica	地上生物量 Aboveground biomass (g·m^-2)	169.4	126.2	286.4	223.5	318.7	88.9	162.8	196.6
	叶生物量Leaf biomass (g·m^-2)	106.9	79.7	180.9	141.1	201.2	56.1	102.8	124.1
	叶面积指数 LAI	1.54	1.15	2.60	2.03	2.90	0.81	1.48	1.80
凋落物累积量Accumulated litter (g·m^-2)		2 111	2 418.5	2 249.7	2 169.3	1 752.5	672.7	1 138.4	1 787.4
根生物量 Root biomass	乔木 Tree (g·m^-2)	378.8	218.6	—	—	—	310.5	282.9	297.7
	草本Herbage (g·m^-2)	217.4	170.5	—	—	—	200.1	262.4	212.6
细根生物量 Fine root biomass (g·m^-2)	0~10 cm	201.3	132.2	—	—	—	223.9	195.8	188.3
	10~20 cm	84.6	42.5	—	—	—	41.2	49.4	54.4
	20~30 cm	19.8	29.4	—	—	—	14.7	35	24.7

样方 Plots	1	2	6	7	平均 Mean
pH值 pH value	4.83	4.79	4.86	4.61	4.77
有机质 Soil organic matter (%)	1.169	0.972	0.862	1.260	1.07
全氮含量Total nitrogen contents (%)	0.064	0.055	0.044	0.070	0.06
碱解氮Alkaline hydrolyzing nitrogen (mg·kg^-1)	54.5	58.5	61.8	70.4	61.31
有效磷Available phosphorus (mg·kg^-1)	0.76	1.34	0.38	1.24	0.93
速效钾Available potassium (mg·kg^-1)	24.40	31.78	43.58	31.09	32.71
缓效钾Slowly available potassium(mg·kg^-1)	201.31	186.67	261.27	186.09	208.84

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