Status of forest development and opportunity cost of avoiding forest conversion in Ba Be National Park, Vietnam

IF 1 Q4 ECOLOGY
Tropics Pub Date : 2016-01-01 DOI:10.3759/TROPICS.24.153
T. Nguyen, M. Masuda, S. Iwanaga
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引用次数: 6

Abstract

This study aimed to discover the status of several types of forest and based on the opportunity costs of REDD+ to identify which greenhouse gas (GHG) emission mitigation options can be implemented in different forest types in Ba Be National Park, Vietnam. From 1990 to 2000, forest in the study area faced a high rate of forest cover loss and degradation. During the next decade from 2000 to 2010, total forest cover increased gradually. However, the natural forest area still decreased. In our household survey (n=103), respondents reported that main drivers of deforestation and forest degradation in those areas were timber extraction for commercial or subsistence purposes, shifting cultivation, inadequate forest management, bribes to forest rangers, felling trees for firewood and bamboo shoots, and conversion to Mo (Manglietia conifera) and other perennial plants. There are some differences in those drivers between the three villages surveyed. From 2000 to 2010, several land use changes such as the conversion of poor timber forest into recovered timber forest, medium timber forest into poor timber forest and planted forest into bare land with scattered trees caused more than 8,000 tCO2e emissions per year. In regard to opportunity costs, most of the avoidance options have negative opportunity costs, which mean potential benefits. Within the current carbon market price, the avoidance can be applied to reduce approximately 7,900 tCO2e emissions (about 98% reduction) per year in the three communes surveyed.
越南巴贝国家公园森林发展现状及避免森林转换的机会成本
本研究旨在发现几种森林类型的现状,并根据REDD+的机会成本确定在越南巴贝国家公园的不同森林类型中可以实施哪些温室气体(GHG)减排方案。从1990年到2000年,研究区森林面临着森林覆盖丧失和退化的高速率。在2000 - 2010年的10年间,森林覆盖总量逐渐增加。但天然林面积仍在减少。在我们的家庭调查中(n=103),受访者报告说,这些地区森林砍伐和森林退化的主要驱动因素是为商业或生计目的采伐木材、转移种植、森林管理不足、贿赂护林员、砍伐树木作为柴火和竹笋,以及改用毛木和其他多年生植物。在被调查的三个村庄之间,这些司机存在一些差异。从2000年到2010年,贫瘠用材林向恢复用材林转变、中等用材林向贫瘠用材林转变、人工林向树木分散的裸地转变等土地利用变化,每年造成8000多吨二氧化碳排放量。在机会成本方面,大多数规避方案的机会成本为负,即潜在收益。在目前的碳市场价格下,在三个被调查的社区中,这种避免可以每年减少约7900吨二氧化碳当量的排放(约减少98%)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Tropics
Tropics ECOLOGY-
CiteScore
1.40
自引率
0.00%
发文量
7
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