西藏墨脱县森林资源资产负债表编制研究

doi:10.19788/j.issn.2096-6369.220115

Abstract

Abstract:

Accounting relating to natural resource assets is an important component of China’s ecological civilization construction program. Although the southeastern part of Qinghai-Tibet Plateau has abundant forest resources, surveys aimed at quantitative accounting of forest resources assets are constrained by difficult field conditions. Given the lack of forest classification data in Motuo County, Tibet, a study was conducted to gather detailed classification data derived from the Google Earth Engine platform as well as information on the physical quantities and values of these assets, and their stocks and flows, to develop a forest resource balance sheet of this county. The balance sheet comprised a summary sheet on the forest resources of Motuo County, an accounting table depicting the values of forest resource assets, a quantified scale measuring excessive depletion of forest resources, and a scale indicating the ecological value of forest resource assets. The balance sheet of forest resources in Motuo County, was analyzed along with changes in the county’s forests during the accounting period. In 2015, forest resources in Motuo County covered an area of 27,007.27 km2 compared with 25,596.89 km2 in 2020, indicating a degree of decrease in the area of forest resources. The ranking of the total value of forest resources comprising various tree species, in descending order, was broad-leaved mixed forest, other coniferous forests, fir, spruce, alpine pine, oak, birch, Yunnan pine, and cypress. The total values of the ecological service functions of forest resources in Motuo County in 2015 and 2020 were, respectively, 127.781 billion yuan and 123.692 billion yuan, with the soil conservation function providing the greatest value, and the air purification function providing the least value. During the period 2015–2020, the total value of forest resource assets in Motuo County increased from 1,601.038 billion yuan in 2015 to 1,664.358 billion yuan in 2020, reflecting a corresponding improvement in the county’s performance relating to investments in forest resource management. Evidently, forest resources have played a positive role in promoting economic and social development and improving residents’ lives.

Key words: forest resources, balance sheet, natural resource asset accounting, Qinghai-Tibet Plateau, Motuo

CLC Number:

F062.1

Yuxin Wu, Juanle Wang, Baomin Han. Preparation of a Balance Sheet on Forest Resources in Motuo County, Tibet[J].Journal of Agricultural Big Data, 2022, 4(1): 136-144.

Figures/Tables 9

Table 1

Calculation formula of material quantity and value quantity of water conservation function"

生态功能	核算指标	实物量计算	价值量计算
涵养水源	调节水量	$G 调 = 10 × A × (P - E - C)$	$V 调 = G 调 × C 库$
涵养水源	净化水质	$G 调 = 10 × A × (P - E - C)$	$V 净 = G 净 × K 净$

Table 1

Table 2

Calculation formula of functional material quantity and value quantity of conservation soil"

生态功能	核算指标	实物量计算	价值量计算
保育土壤	固土	$G 氮 = A × N × (X 2 - X 1)$	$V 固 = (G 固 × C 土) / ρ$
	保肥：氮	$G 磷 = A × P × (X 2 - X 1)$	$V 氮 = (G 氮 × C 1) / ρ$
	保肥：磷	$G 磷 = A × P × (X 2 - X 1)$	$V 磷 = (G 磷 × C 1) / R 2$
	保肥：钾	$G 钾 = A × K × (X 2 - X 1)$	$V 钾 = (G 钾 × C 2) / R 3$

Table 2

Table 3

Carbon sequestration and oxygen release function material quantity and value quantity accounting formula"

生态功能	核算指标	实物量计算	价值量计算
固碳释氧	固碳	$G 碳 = A × (1.63 × R 碳 × B 年 + F 土碳)$	$V 碳 = G 碳 × C 碳$
固碳释氧	释氧	$G 氧 = 1.19 × A × B 年$	$V 氧 = G 氧 × C 氧$

Table 3

Table 4

Calculation formula of material quantity and value quantity of air purification function"

生态功能	核算指标	数值	时间范围
净化大气	提供负离子	$G 负离子 = 5.256 × 1015 × A × H × (Q 负离子 - 600) L$	$V = 负离子 G 负离子 × K 负离子$
	吸收二氧化硫	$G 二氧化硫 = Q 二氧化硫 × A$	$V 二氧化硫 = G 二氧化硫 × K ? 二氧化硫$
	吸收氟化物	$G 二氧化硫 = Q 二氧化硫 × A$	$V 氟化物 = G 氟化物 × K ? 氟化物$
	吸收氮氧化物	$G 氮氧化物 = Q ? 氮氧化物 × A$	$V 氮氧化物 = G 氮氧化物 × K ? 氮氧化物$
	滞尘	$G 滞尘 = Q ? 滞尘 × A$	$V 滞尘 = G 滞尘 × K ? 滞尘$

Table 4

Table 5

Table 6

Table 7

Table 8

Table 9

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森林类型	2015年	2020年
冷杉	760.46	487.18
高山松	698.01	330.84
桦类	674.66	639.03
云杉	233.31	195.17
柏木	357.35	355.37
云南松	177.18	106.17
栎类	353.05	376.86
其他针叶林	6536.31	6532.04
阔叶混交林	17，216.94	16，574.29

		2015年	2020年	变化量
合计		16010.38	16643.58	633.2
资产类	林地资源	1341.10	1690.08	348.98
	林木资源	13，391.47	13，716.58	325.11
	生态功能	1277.81	1236.92	-40.89
	合计	16，010.38	16，643.58	633.2
负债类	资源过耗	—	—	—

	2015年	2020年	变化量
合计	1341.10	1690.08	348.98
冷杉	37.56	29.89	-7.67
高山松	33.74	20.79	-12.95
桦类	33.98	43.27	9.29
云杉	11.76	12.55	0.78
柏木	17.16	22.67	5.51
云南松	8.52	6.64	-1.87
栎类	16.80	22.30	5.50
其他针叶林	300.72	393.02	92.30
阔叶混交林	880.85	1138.95	258.10

	2015年	2020年	变化量
合计	13391.47	13716.58	325.11
冷杉	318.47	270.73	-47.74
高山松	162.99	123.88	-39.11
桦类	74.89	76.34	1.44
云杉	265.36	236.06	-29.30
柏木	9.15	8.71	-0.44
云南松	30.81	47.17	16.36
栎类	134.35	137.04	2.69
其他针叶林	1294.05	1210.57	-83.48
阔叶混交林	11101.38	11606.09	504.70

	2015年	2020年	变化量
合计	1277.81	1236.92	-40.89
涵养水源	505.56	479.16	-26.40
保育土壤	534.81	515.63	-19.18
固碳释氧	136.13	129.61	-6.52
净化大气	101.30	112.51	11.21

Preparation of a Balance Sheet on Forest Resources in Motuo County, Tibet

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