Spatial Change Analysis of Forest Land and Biomass in Natural Forest Protection Project Area of Western Tianshan Mountains

doi:10.13466/j.cnki.lyzygl.2018.01.009

Abstract

Abstract:

In this study,remote sensing technology and forest resources survey data were used for analyzing the spatial changes of forest land and forest biomass in natural forest protection project area of Western Tianshan mountains in Xinjiang.Two temporal remote sensing images were used for obtaining forest land distribution and biomass by means of andom forest classification and biomass model.Thus,The change of forest types and biomass were obtained.The results showed that from the year of 2010—2016 the change of non-forestry Land was obvious with 7 370.1 hm² being turned into forest land and 11 536.23hm² into shrub land.The overall biomass increased by 1.26 million tons,an increase of 2.49%,the volume increased by 208.74 million cubic meters,an increase of 2.99%.

Key words: natural forest protection project, Picea schrenkiana, RS classification, forest biomass, forest stocking volume

CLC Number:

S718.55
TP79

Cite this article

XIAO Zhongqi, HUANG Jianwen, LING Chengxing. Spatial Change Analysis of Forest Land and Biomass in Natural Forest Protection Project Area of Western Tianshan Mountains[J]. FOREST RESOURCES WANAGEMENT, 2018, (1): 57-62.

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Figures/Tables 8

Tab.1

Transfer matrix of land type area from 2010 to 2016

	2016年地类变化
	地类	有林地	疏林地	灌木林地	非林地	合计
2010年地类变化	有林地	281966.9	4731.58	3131.59	2935.55	292765.65
	疏林地	5621.73	29889.4	5845.81	1268.26	42625.2
	灌木林地	5185.29	3023.57	143830.2	3330.2	155369.2
	非林地	7370.1	5745.87	11536.23	1263702.3	1288354.5
	合计	300144.1	43390.42	164343.8	1271236.3	—

Tab.1

Fig.1

Change map of spatial distribution in different land types from 2010 to 2016

Fig.1

Tab.2

Estimation result of biomass and stock volume of arbor forest

	生物量/万t		2010—2016		蓄积量/万m³		2010—2016
	2010年	2016年	生物量变化/万t	变化比例/%	2010年	2016年	蓄积量变化/万t	变化比例/%
	霍城分局	285.87	286.93	1.06	0.37	309.1	311.38	2.28	0.74
特克斯分局	1408.42	1429.86	21.43	1.52	2110.03	2156.2	46.17	2.19
尼勒克分局	520.23	530.63	10.4	2	688.26	710.67	22.4	3.26
昭苏分局	764.55	781.62	17.07	2.23	1062.38	1099.16	36.78	3.46
伊宁分局	218.17	220.75	2.59	1.18	223.08	231.49	8.42	3.77
巩留分局	948.1	976.92	28.82	3.04	1503.7	1565.78	62.08	4.13
察布查尔分局	357.01	364.99	7.98	2.23	500.78	517.97	17.19	3.43
蒙玛拉分局	138.33	142.14	3.81	2.76	169.41	177.62	8.21	4.85
西天山保护区	243.39	245.8	2.42	0.99	392.66	397.86	5.21	1.33
天西管理局	4884.07	4979.64	95.57	1.96	6959.39	7168.13	208.74	2.99

Tab.2

Tab.3

Biomass estimation result of shrubbery in Tianxin forest management bureau104t

	2010年灌木生物量	2016年灌木生物量	2010—2016
	2010年灌木生物量	2016年灌木生物量	变化量	变化比例/%
天西林管局	175.617	206.037	30.421	17.32
霍城分局	7.829	9.342	1.514	19.33
特克斯分局	42.562	50.706	8.144	19.14
尼勒克分局	40.092	39.53	-0.563	-1.4
昭苏分局	31.246	42.561	11.315	36.21
伊宁分局	11.274	11.649	0.375	3.33
巩留分局	13.184	15.818	2.633	19.97
察布查尔分局	20.096	26.662	6.566	32.67
蒙玛拉分局	8.321	8.607	0.286	3.44
西天山保护区	1.012	1.162	0.151	14.81

Tab.3

Fig.2

Shrubs biomass composition in Tianxin Forest Management Bureau

Fig.2

Tab.4

Estimation result of biomass and stock volume in Tianxin Forest Management Bureau

	生物量/万t		2010—2016年		蓄积量/万m³		2010—2016年
	2010年	2016年	生物量变化/万t	变化比例/%	2010年	2016年	蓄积量变化/万t	变化比例/%
霍城分局	293.7	296.27	2.57	0.88	309.1	311.38	2.28	0.74
特克斯分局	1450.98	1480.56	29.58	2.04	2110.03	2156.2	46.17	2.19
尼勒克分局	560.32	570.16	9.84	1.76	688.26	710.67	22.4	3.26
昭苏分局	795.8	824.18	28.39	3.57	1062.38	1099.16	36.78	3.46
伊宁分局	229.44	238.14	2.96	3.79	223.08	231.49	8.42	3.77
巩留分局	961.29	992.74	31.45	3.27	1503.7	1565.78	62.08	4.13
察布查尔分局	377.1	391.65	14.54	3.86	500.78	517.97	17.19	3.43
蒙玛拉分局	146.65	150.75	4.1	2.76	169.41	177.62	8.21	4.85
西天山保护区	244.4	246.97	2.57	1.05	392.66	397.86	5.21	1.33
天西管理局	5059.68	5185.68	126	2.49	6959.39	7168.13	208.74	2.99

Tab.4

Fig.3

The ratio of changes of biomass and stock volume in Tianxin Forest Management Bureau

Fig.3

Fig.4

Changes of estimation biomass and stock volume by remote sensing from 2010 to 2016

Fig.4

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