Analysis on Dynamic Changes of the Forest Resources in Saihanba Mechanized Forest Farm

doi:10.13466/j.cnki.lyzygl.2018.06.003

Abstract

Abstract:

Based on forest resource inventory data in Saihanba Mechanized Forest Farm,forest resource quality,distribution pattern,and dynamic changes in forest area and volume were analyzed.The results showed from 1989 to 2017,both area and volume of forest resources in study area increased steadily. Saihanba obtained 6.1×10⁴ hm² and 7.52×10⁶ m³ of the net increase in forest area and volume,respectively. The area proportions of young,mid-aged and near mature forests were almost equal,indicating age class structure was gradually reasonable. From the change of tree species structure,Larix principis-rupprechtii was in the dominant position,and the area propotion of Pinus sylvestris var.mongolica and Picea asperata also increased. Based on management problems of plantations and natural secondary forests in the study area,some measures and suggestions were presented.

Key words: Saihanba, forest resources, GIS,GPS,RS, dynamics change, distribution pattern

CLC Number:

S757.2

CHANG Weiqiang. Analysis on Dynamic Changes of the Forest Resources in Saihanba Mechanized Forest Farm[J]. FOREST RESOURCES WANAGEMENT, 2018, (6): 13-17.

Figures/Tables 5

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Tab.2

Tab.3

Fig.1

Fig.2

References 10

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林地类型	2017年	2012年	2002年	1989年
有林地	73683.37	68847.58	66012.00	53207.70
疏林地	270.43	597.66	706.40	3607.50
灌木林	1050.22	1097.48	1705.70	88.10
未成林	5215.01	4350.74	5983.60	6020.20
无林地	10793.07	16234.30	16907.80	29965.70
附林地	1640.30	1524.64	1336.90	1010.20

优势树种	2017年		2012年		2002年		1989年
优势树种	面积/hm²	蓄积/m³	面积/hm²	蓄积/m³	面积/hm²	蓄积/m³	面积/hm²	蓄积/m³
合计	73683.37	10010611	68847.58	8099222	66012.00	6835848	53207.70	2484995
落叶松	36670.25	6110403	35829.64	5297793	35127.10	4837192	30673.60	1541733
桦树	14099.59	1953910	17461.82	1630820	14858.40	1088310	11942.00	610844
樟子松	9964.69	960638	8362.93	792598	6728.20	332083	2195.20	28799
柞树	3619.77	181454	3811.02	142369	3581.00	122117	1968.10	63118
云杉	2077.11	119724	1217.55	99977	748.00	50297	248.00	5255
山杨	521.81	69735	646.42	66429	1104.20	68702	265.40	5915
油松	449.45	63077	386.31	60739	210.40	28807	318.40	19936
其他	6280.70	551670	1131.89	8497	3654.70	308340	5597.00	209395

优势树种	2017年		2012年		2002年		1989年
优势树种	面积/hm²	蓄积/m³	面积/hm²	蓄积/m³	面积/hm²	蓄积/m³	面积/hm²	蓄积/m³
合计	73683.37	10010611	68847.58	8099222	66012.00	6835848	53207.70	2484995
幼龄林	23394.78	1233921	22124.45	1139449	9025.50	161022	24358.70	760902
中龄林	21984.30	3177351	22063.98	2818788	48902.20	5806759	28458.00	1702371
近熟林	18996.30	3571360	21489.08	3654976	6776.40	752301	354.70	20454
成熟林	9081.10	1981054	2967.66	453666	1307.90	115766	36.30	1268
过熟林	226.89	46925	202.41	32343

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