Topographic patterns of forest decline as detected from tree rings and NDVI

Wang, Zhou; Lyu, Lixin; Liu, Weixing; Heng, Liang; Huang, Jian‐Guo; Zhang, Qi-Bin

doi:10.1016/j.catena.2020.105011

Cited by 35 publications

(10 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, mixed and dry gardens have different vegetation canopies, depending on the plants being cultivated (Wessels et al, 2004). Vegetation cover can reduce the impact of soil erosion and degradation (Wang et al, 2021). NDVI assessments on Sentinel 2A images are commonly used to determine vegetation cover, even to soil conditions under vegetation stands.…”

Section: Discussionmentioning

confidence: 99%

Spatial distribution of soil morphology and physicochemical properties to assess land degradation under different NDVI and TRI in North Halmahera, Indonesia

Rofita

Utami

Maas

et al. 2021

J.Degrade.Min.Land Manage.

View full text Add to dashboard Cite

Land degradation is currently a major environmental problem that can lead to decreasing biomass productivity. The causes of land degradation have been widely reported. However, the soil morphological characteristics and its detailed properties related to land degradation need to be investigated further. The research was conducted in North Halmahera Regency in March-April 2020. The study started with an overlay of basic maps such as rainfall, land use, topography, and soil types to map the degraded land units. Several land units classified from slightly damaged to severely damaged will be validated based on field observations and supported by laboratory measurements. Characterization of soil morphology and soil sampling was carried out according to USDA international standards. Sentinel 2A image and SRTM image from March to April 2020 were used to determine NDVI and TRI. The characteristics of the soils that have not been degraded tend to be found in volcanic landscapes, while those of the degraded soils tend to be found in structural and karst hills. The thickness of the degraded soil horizons tends to be shallower with an incomplete horizon arrangement, and many rock fragments are found in the soil surface layer. SOC gradually decreases in degraded soils, while the essential nutrients (N, P, and K) are relatively more varied across soil types. The improper land use without conservation on steep slopes causes the soils to be easily degraded. The soil degradation index has a linear relationship with NDVI and TRI. Thus, the revitalization of degraded lands needs to pay attention to the layout and types of vegetation with different slope levels according to the geomorphological zone.

show abstract

Section: Discussionmentioning

confidence: 99%

Spatial distribution of soil morphology and physicochemical properties to assess land degradation under different NDVI and TRI in North Halmahera, Indonesia

Rofita

Utami

Maas

et al. 2021

J.Degrade.Min.Land Manage.

View full text Add to dashboard Cite

show abstract

“…Vegetation not only has the ability of carbon fixation, oxygen release, and climate regulation (Shi et al, 2019a;Zhou et al, 2020) but also is sensitive to climate change (Gao et al, 2018;Liu et al, 2021). On the one hand, plants can convert carbon dioxide and water in the environment into organic matter and store them in tree trunks through photosynthesis (Seftigen et al, 2018;Zhou et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…However, climate warming increases evapotranspiration, leading to drought stress on tree growth (Worrall et al, 2013;Hogg et al, 2017;Chen et al, 2017). Therefore, observing and studying forest growth dynamics and understanding their relationship with climate change are essential for forest management and sustainable development (Anderegg et al, 2012;Wang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…George, 2014;Zheng et al, 2019), the compilation of tree-ring chronologies also involves time-consuming fieldwork and laboratory work such as tree-ring sample collection, width measurement, and cross-dating (Bhuyan et al, 2017;Vicente-Serrano et al, 2016). These shortcomings limit dendroecological methods for real-time monitoring of forest growth in a wider area (Camarero et al, 2010;Wang et al, 2021;Xu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Plant leaves have different absorption and reflectance of red and near-infrared light wavelengths (Xu et al, 2019). Multispectral sensors have spectral bands of visible and infrared wavelengths combined to produce vegetation indices (Brown et al, 2006;Wang et al, 2003). Normalized difference vegetation index (NDVI) values range from −1.0 to +1.0, with negative values corresponding to surfaces without vegetation cover and positive values corresponding to surfaces with vegetation cover (Brehaut and Danby, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Lengthening of the growth season, not increased water availability, increased growth of Picea likiangensis var. rubescens plantations on eastern Tibetan Plateau due to climate change

et al. 2022

View full text Add to dashboard Cite

Abstract. On the eastern Tibetan Plateau, the growth of trees is strongly affected by climate change. Previous researchers have found that climate warming changes thermal and hydraulic conditions, lengthening the growing season and promoting tree growth. Some studies have analyzed the effects of drought, precipitation, and temperature on tree growth. However, previous studies have mainly focused on natural forests, with few studies on the response of plantations to climate change. Therefore, we studied the relationship between dendrochronology (basal area increment, BAI), normalized difference vegetation index (NDVI), and climate factors to explore the response of Picea likiangensis var. rubescens plantations to climate change. The results showed that from 1990 to 2018, the temperature in the study area increased significantly; the rate of increase was 0.39∘ per decade. Among the climate factors, self-calibrated Palmer drought severity index (scPDSI) had the most significant impact on BAI. From P_May (P_ represents the month of the previous year) to December, BAI was always negatively correlated with the scPDSI, with 9 months being significantly negatively correlated. BAI was significantly positively correlated with the minimum 2 m temperature (TMN) in P_July, P_September, July, and September. BAI was significantly positively correlated with the maximum 2 m temperature (TMX) in P_October, P_December, and July. BAI was significantly positively correlated with the mean 2 m temperature (TMP) in P_July, P_December, and July. There is a significant positive correlation between BAI and annual NDVI (NDVIa), which means that NDVI can be used to study the response of plantations to climate change. Our study contributes to a better understanding of the response of plantation growth in high-altitude areas to climate change, which is needed by forest managers.

show abstract

Inconsistent relationships between tree ring width and normalized difference vegetation index in montane evergreen coniferous forests in arid regions

Yan

Jiang

Jiao

et al. 2021

Trees

View full text Add to dashboard Cite

Topographic patterns of forest decline as detected from tree rings and NDVI

Cited by 35 publications

References 60 publications

Spatial distribution of soil morphology and physicochemical properties to assess land degradation under different NDVI and TRI in North Halmahera, Indonesia

Spatial distribution of soil morphology and physicochemical properties to assess land degradation under different NDVI and TRI in North Halmahera, Indonesia

Lengthening of the growth season, not increased water availability, increased growth of Picea likiangensis var. rubescens plantations on eastern Tibetan Plateau due to climate change

Inconsistent relationships between tree ring width and normalized difference vegetation index in montane evergreen coniferous forests in arid regions

Contact Info

Product

Resources

About