Effects of conservation policy on China’s forest recovery

Viña, Andrés; McConnell, William J.; Yang, Hongbo; Xu, Zhenci; Liu, Jianguo

doi:10.1126/sciadv.1500965

Cited by 182 publications

(108 citation statements)

References 48 publications

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“…The incremental changes between consecutive inventories seem to become greater in growing stock, but not in total forests, total plantations or forest cover after initiation of the NFPP. Viña et al (2016) also indicated a 1.6% forest cover gain and Ren et al (2015) showed a 77% reduction in deforestation loss in the NFPP areas over the period 2000 and 2010 based on satellite images. However, the forest cover determined on satellite images reflects more tree density and therefore growing stock, not necessarily the percent forest cover that increased 3.4% instead during the 10-year-period according to the National Forest Inventories (State Forestry Administration of China 2016b).…”

Section: Program Impactsmentioning

confidence: 99%

“…Growing wood imports (FAO 2016) will add pressure on other countries' forests, increasing legal and illegal harvesting and producing negative impacts on forest management, environment, and biodiversity (Viña et al 2016). However, not all of the imported wood is consumed in China; significant volumes are exported as furniture and other wood products (State Forestry Administration 2016a), as seen from simultaneously increases of both imported and exported woods since the initiation of the NFPP program (FAO 2016).…”

Section: Program Impactsmentioning

confidence: 99%

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China’s Natural Forest Protection Program: Progress and impacts

YangHua

2017

The Forestry Chronicle

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This is a brief review on the progress and impacts of China’s Natural Forest Protection Program that was initiated in response to massive flooding in 1998 of the major river basins of China. The program was heavily financed by the central government and was a success in terms of three program goals: timber harvest control in the natural forests; increase in the total area of forest protection; and, the successful resettlement of forest workers who were affected by reduced harvests. The ecological, social, and economic impacts of the program are discussed.

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Section: Program Impactsmentioning

confidence: 99%

Section: Program Impactsmentioning

confidence: 99%

China’s Natural Forest Protection Program: Progress and impacts

YangHua

2017

The Forestry Chronicle

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“…Google Earth has been widely used in result validation of broad land cover products because of its high spatial accuracy [36]. The horizontal positional accuracy of Google Earth's high-resolution imagery ranges from 0.4 to 171.6 m, with average accuracies of 24 m in developed countries and 44 m in developing countries [36,37]. The global geo-reference field photo library is maintained by the University of Oklahoma, which is a data portal used to archive, share, and manage geotagged field photos.…”

Section: Validation Data Collected By Google Earth Imagery and Field mentioning

confidence: 99%

Accuracy Assessment and Inter-Comparison of Eight Medium Resolution Forest Products on the Loess Plateau, China

Yang

Dong

Liu

et al. 2017

IJGI

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Abstract:Forests play an important role in maintaining ecosystem services, especially in ecologically fragile areas such as the Loess Plateau (LP) in China. However, there is still great uncertainty in the spatial extent and distribution of forests in such a fragmented region. In order to examine the advantages and disadvantages of existing forest mapping products, we conducted a thorough accuracy assessment on the eight recent, medium resolution (30-50 m) products by using the LP in 2010 as the region of interest. These mapping products include Landsat and/or PALSAR images, including the forest products from GlobeLand30, FROM-GLC, Hansen, ChinaCover, NLCD-China, GLCF VCF, OU-FDL, and JAXA. The same validation data were used to assess and rank the accuracy of each product. Additionally, the spatial consistency of the different forest products and their dependence on the terrain were analyzed. The results showed that the overall accuracies of the eight forest products on the LP in 2010 were between 0.93 ± 0.003 and 0.97 ± 0.002 with a 95% confidence interval, and GlobeLand30 presented the highest overall accuracy (0.97 ± 0.002). Among them, the PALSAR-based products (OU-FDL and JAXA) indicated relatively high accuracies, while the six Landsat-based products showed a large diversity in the accuracy. According to the eight products, the total estimated forest area of the LP varied from 7.627 ± 0.077 to 10.196 ± 0.1 million ha with a 95% confidence interval. We also found that the consistency in the spatial distribution of forests between these maps: (1) increased substantially with increasing elevation until 2000m, but then decreased at higher elevations, and (2) showed mild variation along increasing slope, but had a slight rate of increase. Our findings implied that future forest mapping studies should consider topographical attributes such as elevation and slope in their final products. Our results are fundamental in guiding future applications of these existing forest maps.

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“…Yet these well-intended domestic policies, while protecting China's remaining natural forests, have already had a negative spillover effect for many forests abroad (Sun, Canby, and Liu 2016;EIA 2013;Laurance 2011). It is possible that this policy will lead to the export of China's "ecological footprint" from its own forests to those of its regional neighbors, potentially driving even higher the volume of illegally logged timber from Southeast Asia, Africa, and Northern Asia (Russia) (Viña et al 2016).…”

Section: Forest Productsmentioning

confidence: 99%