Forest Cover Change and the Effectiveness of Protected Areas in the Himalaya since 1998
Open Access
- 30 July 2020
- journal article
- research article
- Published by MDPI AG in Sustainability
- Vol. 12 (15), 6123
- https://doi.org/10.3390/su12156123
Abstract
Himalaya, a global biodiversity hotspot, has undergone considerable forest cover fluctuation in recent decades, and numerous protected areas (PAs) have been established to prohibit forest degradation there. However, the spatiotemporal characteristics of this forest cover change across the whole region are still unknown, as are the effectiveness of its PAs. Therefore, here, we first mapped the forest cover of Himalaya in 1998, 2008, and 2018 with high accuracy (>90%) using a random forest (RF) algorithm based on Google Earth Engine (GEE) platform. The propensity score matching (PSM) method was applied with eight control variables to balance the heterogeneity of land characteristics inside and outside PAs. The effectiveness of PAs in Himalaya was quantified based on matched samples. The results showed that the forest cover in Himalaya increased by 4983.65 km2 from 1998 to 2008, but decreased by 4732.71 km2 from 2008 to 2018. Further analysis revealed that deforestation and reforestation mainly occurred at the edge of forest tracts, with over 55% of forest fluctuation occurring below a 2000 m elevation. Forest cover changes in PAs of Himalaya were analyzed; these results indicated that about 56% of PAs had a decreasing trend from 1998 to 2018, including the Torsa (Ia PA), an area representative of the most natural conditions, which is strictly protected. Even so, as a whole, PAs in Himalaya played a positive role in halting deforestation.Funding Information
- National Natural Science Foundation of China (41761144081, 41671104)
This publication has 130 references indexed in Scilit:
- Forest restoration, biodiversity and ecosystem functioningBMC Ecology, 2011
- Global protected area impactsProceedings Of The Royal Society B-Biological Sciences, 2010
- Beyond the Fragmentation Threshold Hypothesis: Regime Shifts in Biodiversity Across Fragmented LandscapesPLOS ONE, 2010
- High and Far: Biases in the Location of Protected AreasPLOS ONE, 2009
- Measuring the effectiveness of protected area networks in reducing deforestationProceedings of the National Academy of Sciences of the United States of America, 2008
- Temporal mapping of deforestation and forest degradation in Nepal: Applications to forest conservationForest Ecology and Management, 2008
- Predicting global change impacts on plant species’ distributions: Future challengesPerspectives in Plant Ecology, Evolution and Systematics, 2008
- A Landsat Surface Reflectance Dataset for North America, 1990–2000IEEE Geoscience and Remote Sensing Letters, 2006
- Forest management and land use/cover changes in a typical micro watershed in the mid elevation zone of Central Himalaya, IndiaForest Ecology and Management, 2005
- Effects of Habitat Fragmentation on BiodiversityAnnual Review of Ecology, Evolution, and Systematics, 2003