Spatial distribution of forest carbon in Zhejiang Province with geostatistics based on CFI sample plots

Feng, 张峰 Zhang; Qun, 杜群 Du; Hongli, 葛宏立 Ge; Anxing, 刘安兴 Liu; Fu, Weijun; Biyong, 季碧勇 Ji

doi:10.5846/stxb201201100055

Cited by 12 publications

(4 citation statements)

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“…Of course, the Zhejiang coniferous forests' average NEP (416.36 gC•m −2 •yr −1 ) was higher than found in any other study [63], and the broadleaf forests' average NEP (632.47 gC•m −2 •yr −1 ) simulated in this study, to some extent, was lower than other related studies [63,64]. This may be due to the fact that forests in Zhejiang Province are still dominated by young and middle-aged forests [65], but the productivity of coniferous forests is larger than that of broad-leaved forests. NEP with higher productivity also increases with age, showing rapid growth at a young age and a rapid decline in old age [21,66].…”

Section: Discussioncontrasting

confidence: 72%

“…Recent studies have shown that spatiotemporal variability of forest carbon sequestration in Zhejiang Province mainly exhibits spatial autocorrelation [53,59,65,72]. With the reduction of human disturbance in the forest, natural factors such as the climate, topography, and soil have a greater impact on the spatial pattern of carbon sequestration in forest ecosystems in Zhejiang Province. Of course, this also shows that during the period of 1985-1999, the frequent human disturbance of the forest affected its carbon sink function, so the correlation between NEP and meteorological factors such as precipitation and temperature was poor (e.g., Figure 10).…”

Section: Discussionmentioning

confidence: 99%

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Spatiotemporal Simulation of Net Ecosystem Productivity and Its Response to Climate Change in Subtropical Forests

Zheng

Mao

et al. 2019

Forests

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Subtropical forests have great potential as carbon sinks; however, the relationship between net ecosystem productivity (NEP) and climate change is still unclear. This study took Zhejiang Province, a subtropical region, as an example. Based on remote sensing classification data of forest resources, the integrated terrestrial ecosystem carbon cycle (InTEC) model was used to simulate the spatiotemporal dynamics of the forest NEP in Zhejiang Province during 1985–2015 and analyze its response to meteorological factors such as temperature, precipitation, relative humidity, and radiation. Three patterns emerged: (1) The optimized InTEC model can better simulate the forest NEP in Zhejiang Province, and the correlation coefficient between the simulated NEP and observed NEP was up to 0.75. (2) From 1985 to 2015, the increase in the total NEP was rapid, with an average annual growth rate of 1.52 Tg·C·yr−1. During 1985–1988, the forests in Zhejiang Province were carbon sources. After 1988, the forests turned into carbon sinks and this continued to increase. During 2000–2015, more than 97% of the forests in Zhejiang Province were carbon sinks. The total NEP reached 32.02 Tg·C·yr−1, and the annual mean NEP increased to 441.91 gC·m−2·yr−1. The carbon sequestration capacity of forests in the east and southwest of Zhejiang Province is higher than that in the northeast of Zhejiang Province. (3) From 2000 to 2015, there was an extremely significant correlation between forest NEP and precipitation, with a correlation coefficient of 0.85. Simultaneously, the forest NEP showed a negative correlation with temperature and radiation, with a correlation coefficient of −0.56 for both, and the forest NEP was slightly negatively correlated with relative humidity. The relative contribution rates of temperature, precipitation, relative humidity, and radiation data to NEP showed that the contribution of precipitation to NEP is the largest, reaching 61%, followed by temperature and radiation at 18% and 17%, respectively. The relative contribution rate of relative humidity is the smallest at only 4%. During the period of 1985–1999, due to significant man-made disturbances, the NEP had a weak correlation with temperature, precipitation, relative humidity, and radiation. The results of this study are important for addressing climate change and illustrating the response mechanism between subtropical forest NEP and climate change.

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Section: Discussioncontrasting

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Spatiotemporal Simulation of Net Ecosystem Productivity and Its Response to Climate Change in Subtropical Forests

Zheng

Mao

et al. 2019

Forests

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“…The northeastern region is an alluvial plain. Hilly terrain covers 70% of the land in the Province [42]. Among all the soil types in China, red and yellow soils are the main types in the Zhejiang Province [43,44].…”

Section: Study Regionmentioning

confidence: 99%

Topography and Soil Organic Carbon in Subtropical Forests of China

Zhou

Xie

et al. 2023

Forests

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Soil organic carbon (SOC) strongly contributes to the operation of the global carbon cycling, and topographical factors largely influence its spatial distribution. However, SOC distribution and its leading topographical impact factors in subtropical forest ecosystems (e.g., the Zhejiang Province in China) have received relatively limited attention from researchers. In this study, 255 forest soil samples were collected from the Zhejiang Province to quantify the spatial variation in SOC and impact factors in subtropical forests. The SOC contents over soil profiles were 35.95 ± 22.58 g/kg, 20.98 ± 15.26 g/kg, and 13.77 ± 11.28 g/kg at depths of 0–10 cm, 10–30 cm, and 30–60 cm, respectively. The coefficient variations at different depths were 62.81% (0–10 cm), 72.74% (10–30 cm), and 81.92% (30–60 cm), respectively. SOC content shows a moderate intensity variation in the Zhejiang Province. The nugget coefficients of the SOC content for the three depths were 0.809 (0–10 cm), 0.846 (10–30 cm), and 0.977 (30–60 cm), respectively. Structural factors mainly influence SOC content. SOC content is positively correlated with elevation and slope, and negatively correlated with slope position (p < 0.05). However, the SOC content was negatively correlated with slope in mixed coniferous and broad-leaved forest. The distribution of the SOC content was relatively balanced between different slope positions. However, the differences became obvious when forest types were distinguished. Topographical factors affected the SOC content differently: elevation > slope > slope position. Slope becomes the main influencing factor in 30–60 cm soil. Forest type significantly influenced the SOC content but with a low statistical explanation compared to topographical factors. Topography has different effects on SOC of different forest types in subtropical forests. This reminds us that in future research, we should consider the combination of topography and forest types.

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“…The carbon pool data (Table 2) of each land-use type were obtained from relevant literature Ekoungoulou, 2014;Xi et al, 2013;Ye, 2012;Zhang et al, 2012;Zhu et al, 2013). Combined with the land-use maps of 2009 and 2014, based on the economic value of carbon of US$66 per ton (Tol, 2009) and the default market discount rate of 7%, the carbon module produced corresponding carbon storage maps and the value of carbon sequestration.…”

Section: Computation Of Carbon Storage and Sequestration Valuementioning

confidence: 99%

Island ecosystem services value, land-use change, and the National New Area Policy in Zhoushan Archipelago, China

Qiu

Yue

Zhang

et al. 2017

ISJ

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Inhabited islands in China now face increasing stress from urbanisation and related development policies. Since the National New Area was established in 2011, dramatic land-use changes in the Zhoushan Archipelago have affected its ecosystem health and biodiversity. The National New Area policy further promoted Zhoushan's economic development but exerted more pressure on its ecosystems. To explore sustainable development, this study attempts to determine how ecosystems in the archipelago have been impacted through the variation in ecosystem services value (ESV) by means of the InVEST model. The outcomes indicate that: (i) the total ESV and carbon storage have declined, with a remarkable increase in built-up land and decrease in farmland and wetland; (ii) the encroachment on farmland and wetland by built-up land is identified as the main reason for the impairment of ecosystem services; (iii) the National New Area policy has affected the island ecosystems by transforming the orientation of development to a national strategic position, encouraging specific kinds of spatial planning with different development patterns and focuses, and introducing preferential policies on administration, land use, etc.

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Spatial distribution of forest carbon in Zhejiang Province with geostatistics based on CFI sample plots

Cited by 12 publications

References 0 publications

Spatiotemporal Simulation of Net Ecosystem Productivity and Its Response to Climate Change in Subtropical Forests

Spatiotemporal Simulation of Net Ecosystem Productivity and Its Response to Climate Change in Subtropical Forests

Topography and Soil Organic Carbon in Subtropical Forests of China

Island ecosystem services value, land-use change, and the National New Area Policy in Zhoushan Archipelago, China

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