Comparative Analysis of Regional Reliability of Globally Distributed Forest Products in China

doi:10.13466/j.cnki.lyzygl.2020.02.026

Abstract

Abstract:

Accurately grasping forest distribution and dynamic changes is the foundation of forest resource management.At present,a series of global forest distribution products based on earth observation data have been developed and widely used.However,the reliability of these products in China is still lacking a systematic evaluation.Based on the forest sample data of seven typical regions in China,three types of global forest distribution product data such as FROM-GLC10,FNF,and GFCM were compared and analyzed using indicators such as type area deviation and spatial consistency.The results show that:FROM-GLC10 data area consistency,spatial consistency is higher than FNF,GFCM data products;the reliability of the three data products in the southern region is better than the northern region;in the forest type,the arbor forest type in three data has the highest spatial consistency,but the product data of other types are different.Through analysis and discussion,in order to provide a reference for the selection and use of suitable global forest distribution data products in different regions of China.

Key words: forest cover, earth observation, area consistency, spatial consistency, spatial error

CLC Number:

LIU Daichao, LI Xiaosong, YANG Guangbin, QI Xinmiao, WANG Jianhe. Comparative Analysis of Regional Reliability of Globally Distributed Forest Products in China[J]. FOREST RESOURCES WANAGEMENT, 2020, (2): 173-180.

Figures/Tables 7

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References 26

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研究区	中心经纬度	地理位置	所属生态区	主要森林资源特征
本溪市	41°17'N 123°45'E	辽宁省东南部	温带陆地森林	本溪市森林覆盖率76%,森林植被处于次生演替阶段,天然次生林为主要森林类型,由枫桦、蒙古栎、色木槭等优势树种组成
承德市	40°57'N 117°57'E	河北省东北部	温带山地系统	承德市森林覆盖率达57.67%,主要森林类型除了有槲树、槲栎、蒙古栎等乔木,其中灌木林地约占森林面积的10%
防城港市	21°41'N 108°21'E	广西南部	亚热带湿润森林	防城港市森林覆盖率为56.81%,主要树种有松树、桉树、肉桂、八角,森林植被主要为季风常绿阔叶林
黄山市	29°42'N 118°20'E	安徽省南部	亚热带湿润森林	黄山森林覆盖率可达82.9%, 乔木林地占森林面积的89.6%,其中杉类占35%,松类占20.7%,硬阔占42.6%;此外,以茶林为主的经济林占林地面积的9.2%
普洱市	22°49'N 100°57'E	云南省西北部	亚热带山地系统、热带山地系统	普洱市森林覆盖率超过67%,其中:有林地占森林面积的89.4%,灌木林地占林地面积的6.6%,树种多为思茅松、栎类、桉树等常绿阔叶林
天水市	34°34'N 105°43'E	甘肃东南部	温带山地系统	天水市森林覆盖率为45.5%, 森林植被主要分布在陇山、西秦岭和关山林区。类型主要有针叶林、落叶阔叶林及针阔混交林
宜昌市	30°41'N 111°17'E	湖北省西南部	亚热带湿润森林、亚热带山地系统	宜昌市森林覆盖率达到65.16%,主要森林类型有马尾松纯林、柏木林、杉栎或者松栎混交林及经济林(火棘、柑橘)、灌丛等

产品名称	时间	分辨率/m	遥感影像	制作单位	制图精度/%
FROM-GLC10	2018年	10	Sentinle-2	清华大学	72.76
FNF	2018年	25	PALSAR-2/PALSAR	日本宇宙航空研究开发机构	85以上
GFCM	2018年	30	Landsat、高分系列	中国科学院空天信息创新研究院	90.94

区域	FROM-GLC10		GFCM		FNF
区域	面积百分比/%	偏差系数	面积百分比/%	偏差系数	面积百分比/%	偏差系数
本溪	81.08	-6.72	44.86	40.95	90.10	-18.60
承德	60.73	-7.59	63.48	-12.47	37.89	32.87
防城港	73.60	-13.72	72.14	-11.47	69.67	-7.65
黄山	85.74	-0.61	86.55	-1.56	78.52	7.87
普洱	85.47	-7.31	70.71	11.22	81.54	-2.37
天水	42.49	4.40	48.29	-8.64	22.03	50.45
宜昌	72.11	-1.28	60.90	14.46	60.86	14.52

研究区	FROM-GLC10		GFCM		FNF
研究区	整体精度/%	Kappa系数	整体精度/%	Kappa系数	整体精度/%	Kappa系数
本溪	66.27	0.52	45.94	0.32	72.78	0.36
承德	62.01	0.52	58.59	0.44	58.14	0.49
防城港	64.12	0.45	62.96	0.43	76.22	0.66
黄山	85.18	0.71	84.43	0.66	80.99	0.76
普洱	78.19	0.55	62.52	0.30	73.83	0.46
天水	71.55	0.72	64.06	0.57	73.17	0.73
宜昌	74.85	0.68	66.22	0.54	67.41	0.58