Combustion Characteristics of Live Leaves of 9 Lianas Species in Kunming,Yunnan Province

doi:10.13466/j.cnki.lyzygl.2017.06.021

Abstract

Abstract:

In order to compare the combustibility of lianas,the combustion experiment of 9 liana species in Kunming were conducted by means of a self-designed combustion experiment apparatus.The moisture content of 9 kinds of blades and the mass per unit area,burning rate and damage degree of 2 kinds of combustible blades were measured.The research showed that Hedera nepalensis var.sinensis and Mucuna sempervirens can be ignited in pure oxygen environment,which belonged to the class of flammable lianas.With the increase of water content,both the burning rate and damage degree showed a downward trend.The greater the mass per unit area of leaf,the lower the burning rate,the smaller degree of damage.The leaves of other 7 species of lianas can not be ignited,and belong to nonflammable lianas.

Key words: liana, combustion, burning rate, damage degree

CLC Number:

S762

SU Wenjing, ZHANG Siyu, HE Cheng, WANG Qiuhua, LI Shiyou. Combustion Characteristics of Live Leaves of 9 Lianas Species in Kunming,Yunnan Province[J]. FOREST RESOURCES WANAGEMENT, 2017, (6): 120-123.

Figures/Tables 4

Fig.1

Tab.1

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Tab.3

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叶片名称	含水率M/%	叶片名称	含水率M/%
中华猕猴桃	70.50	石岩枫	66.96
藤三七	93.23	叶子花	74.36
三叶地锦	87.31	三叶爬崖藤	83.80
紫藤	70.81

序号	含水率 M/%	鲜重 Pa₁/(g/m²)	干重 Pa₂/(g/m²)	燃烧速率					损毁程度
				绝对速率		相对速率			绝对损毁程度		相对损毁程度
				V₁/(m²/s)	V₂/(g/s)	V₃/(%/s)	V₄/(%/s)	S₁/cm²		S₂/g	S₃/%	S₄/%
1	66.52	327.90	109.78	0.137	0.0086	0.39	0.74		1.37	0.0862	3.85	7.39
2	70.49	293.92	86.74	0.081	0.0039	0.39	0.65		0.64	0.0311	3.11	5.15
3	68.31	292.76	92.78	0.077	0.0045	0.11	0.21		1.55	0.0917	2.12	4.29
4	69.31	280.02	85.94	0.092	0.0177	0.11	0.78		1.97	0.3781	2.42	16.58
5	68.17	290.88	96.69	0.196	0.0084	0.29	0.41		3.98	0.1713	5.88	8.34
6	65.56	410.34	141.32	0.109	0.0068	0.23	0.36		1.83	0.1141	3.95	6.00
7	68.19	301.71	95.97	0.124	0.0053	0.24	0.33		2.69	0.1155	5.10	7.26
8	67.21	310.39	101.78	0.105	0.0069	0.13	0.28		1.19	0.0786	1.48	3.15
9	70.36	291.38	86.36	0.049	0.0036	0.13	0.33		0.36	0.0266	0.98	2.48
10	66.02	264.17	89.76	0.105	0.0041	0.20	0.30		1.03	0.0399	1.98	2.90
11	67.95	279.37	89.54	0.098	0.0045	0.34	0.56		0.87	0.0397	3.03	4.94
12	71.17	303.47	87.49	0.117	0.0050	0.13	0.18		1.58	0.0678	1.71	2.41
13	68.86	277.01	86.26	0.055	0.0045	0.17	0.36		0.26	0.0213	0.81	2.40
14	70.62	249.12	73.19	0.074	0.0048	0.22	0.59		0.69	0.0450	2.10	5.50
15	71.01	264.08	76.56	0.048	0.0032	0.13	0.33		0.56	0.0375	1.50	3.81
平均	68.62	295.77	93.34	0.098	0.0061	0.214	0.43		1.37	0.0896	2.67	5.51

序号	含水率 M/%	鲜重 Pa₁/(g/m²)	干重 Pa₂/(g/m²)	燃烧速率					损毁程度
				绝对速率		相对速率			绝对损毁程度		相对损毁程度
				V₁/(m²/s)	V₂/(g/s)	V₃/(%/s)	V₄/(%/s)	S₁/cm²		S₂/g	S₃/%	S₄/%
1	60.50	161.21	63.68	0.335	0.0076	0.64	0.90		6.89	0.1564	13.18	18.56
2	60.21	155.04	61.69	0.576	0.0090	1.14	1.16		12.71	0.1990	25.27	25.52
3	61.41	136.15	52.54	0.070	0.0026	0.12	0.32		0.74	0.0271	1.25	3.37
4	62.87	138.41	51.39	0.205	0.0040	0.36	0.51		1.31	0.0257	2.29	3.24
5	61.56	262.12	100.76	0.092	0.0079	0.22	0.73		0.62	0.0530	1.50	4.89
6	59.97	212.56	85.09	0.215	0.0049	0.42	0.45		5.15	0.1180	10.06	10.84
7	61.87	259.06	98.78	0.188	0.0045	0.37	0.34		15.17	0.3619	29.99	27.61
8	61.61	242.97	93.27	0.114	0.0051	0.28	0.51		1.21	0.0539	2.95	5.41
9	61.57	201.41	77.40	0.164	0.0035	0.33	0.35		1.89	0.0409	3.80	4.08
10	65.08	238.01	83.11	0.139	0.0045	0.27	0.37		1.47	0.0480	2.85	3.91
11	66.14	173.72	58.82	0.172	0.0019	0.29	0.18		1.13	0.0123	1.93	1.21
12	61.88	193.54	73.78	0.174	0.0038	0.32	0.36		5.16	0.1124	9.57	10.77
13	62.36	235.94	88.81	0.252	0.0069	0.49	0.57		3.38	0.0926	6.54	7.59
14	61.69	241.14	92.38	0.276	0.0080	0.76	0.91		2.39	0.0693	6.57	7.90
15	61.31	215.01	83.19	0.116	0.0068	0.18	0.49		1.27	0.0743	1.98	5.39
平均	62.04	204.42	77.65	0.206	0.0054	0.413	0.54		4.03	0.0963	7.98	9.35