Assessing the response of vegetation change to drought during 2009–2018 in Yunnan Province, China

Yu, Yuanhe; Shen, Yuzhen; Wang, Jinliang; Wei, Yuchun; Nong, Lanping; Deng, Huan

doi:10.1007/s11356-021-13835-4

Cited by 10 publications

(5 citation statements)

References 46 publications

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“…Drought had a high impact on vegetation growth of grassland, which could be attributed to the shallow root system of grassland. In contrast, the impact of drought on forest was relatively stable [40]. Xu et al [41] similarly showed that increasing aridity resulting from drought induced more rapid and significant declines in vegetation photosynthesis.…”

Section: Effects Of Drought On Ndvimentioning

confidence: 99%

Response of NDVI of Natural Vegetation to Climate Changes and Drought in China

Wang

Cao

et al. 2021

Land

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Temporal and spatial changes in vegetation and their influencing factors are of great significance for the assessment of climate change and sustainable development of ecosystems. This study applied the Asymmetric Gaussians (AG) fitting method, Mann-Kendall test, and correlation analysis to the Global Inventory Monitoring and Modeling System (GIMMS) third-generation Normalized Difference Vegetation Index and gridded climate and drought data for 1982–2015. The temporal and spatial changes to NDVI for natural grassland and forest during the growing season were analyzed. Relationships among NDVI, climate change, and droughts were also analyzed to reveal the influence of vegetation change. The results showed that: (1) Land use/cover change (LUCC) in China was mainly represented by increases in agricultural land (Agrl) and urban and rural land (Uril), and decreases in unutilized land (Bald), grassland, forest, and permanent glacier and snow (Snga). The increase in agricultural land was mainly distributed in the western northwest arid area (WNW) and northern North China (NNC), whereas regions with severe human activities such as southern South China (SNC), western South China (WSC), and eastern South China (ESC) showed significant decreases in agricultural land due to conversion to urban and rural land. (2) The start of the growing season (SOS) was advanced in WNW, SNC, WSC, and ESC, and the end of growing season (EOS) was delayed in WNW, NNC, and SNC. The growing season length (GSL) of natural vegetation in China has been extended by eight days over the last 34 years. However, the phenology of the Qinghai-Tibet Plateau (TP) was opposite to that of the other regions and the GSL showed an insignificant decreasing trend. (3) The NDVI increased significantly, particularly in the SNC, WSC, ESC, and the grassland of the WNW. Precipitation was found to mainly control the growth of vegetation in the arid and semi-arid regions of northwest China (WNW and ENW), and precipitation had a much greater impact on grassland than on forests. Temperature had an impact on the growth of vegetation throughout China, particularly in SNC, ESC, and WSC. (4) The Standardized Precipitation Evapotranspiration Index (SPEI) showed a downward trend, indicating an aridification trend in China, particularly in ENW, NNC, and WNW. Similar to precipitation, the main areas affected by drought were WNW and ENW and grassland was found to be more sensitive to drought than forest. The results of this study are of great significance for predicting the response of ecosystem productivity to climate change under future climate change scenarios.

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Section: Effects Of Drought On Ndvimentioning

confidence: 99%

Response of NDVI of Natural Vegetation to Climate Changes and Drought in China

Wang

Cao

et al. 2021

Land

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“…Accompanied with global climate change, the variation of warm pools can indeed lead to the change of monsoons, and eventually affect the regional wildfire activities. The wildfire number across Yunnan has been decreasing in recent decades (Figure 2a), companied by an increase of rainfall in the same period (Shao et al., 2021; Yu et al., 2021). It should be consistent with the recent expansion of the Indo‐Pacific warm pool in winter and spring, with the WP warming more significantly, resulting in the simultaneous precipitation increase in Southeast Asia (Roxy et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

“…In these circumstances with the wetter winter and the drier growing season, the summer vegetation index in Yunnan generally decreased recently (Shao et al., 2021; Yu et al., 2021). The precipitation increase in spring obviously inhibiting the vegetation index in summer and autumn has also been detected (Sun et al., 2021).…”

Section: Discussionmentioning

confidence: 99%

Impacts of the Western Pacific and Indian Ocean Warm Pools on Wildfires in Yunnan, Southwest China: Spatial Patterns With Interannual and Intraannual Variations

Liu

Shen

Guan³

et al. 2022

Geophysical Research Letters

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The Indo‐Pacific warm pool affects the regional climatic conditions in Southeast Asia mediated by the Western Pacific (WP) and Indian Ocean (IO) monsoons, which are recognized as critical regulators of wildfires in this region. Our study explored the spatiotemporal effects of the warm pools on wildfire records in Yunnan, Southwest China. We showed the interannual records had a negative relationship with the simultaneous WP warm pool area index. The Ailao Mountains in the central Yunnan could be a geographical barrier that blocked the influences of the WP warm pool from the east side. For the intraannual changes, the wildfire number variations had a stronger connection to the IO warm pool dynamics than the WP. Our study provided the novel evidence on the teleconnection between the Indo‐Pacific warm pool dynamics and regional environmental processes in Yunnan, also indicating this area as a part of the transitional zone between the two warm pools.

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“…Plastic lm mulching can improve soil conditions by increasing biomass (Z. Liu et al, 2017), and increasing the content of SOC, STN, and SAP in soil (Ravanbakhsh et al, 2019;Yu et al, 2021). However, some research shows that using lm mulch reduces the contents of SOC, STN, and SAP in soil (M. ).…”

Section: Discussionmentioning

confidence: 99%

Effects of Film Mulching and Irrigation on Biomass of Leaves, Roots and Tubers and Soil Nutrient Characteristics of Cyperus esculentus L.

Ding

Zhang²,

Li³

et al. 2022

Preprint

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Aims To study the effect of drip irrigation mulching and the most suitable irrigation system for Cyperus esculentus L., and to provide a reference for the construction of a cultivation model for water-saving and high yield management of Cyperus esculentus. Methods To study the effects of irrigation and mulching control on the nutrients and biomass of Cyperus esculentus, a combination of field and indoor experiments analyzed the film mulching (FM) and no film mulching (NFM) treatments and different irrigation treatments, CK (control, the common local irrigation of 5316.45 m3·ha-2), T1 (3431.40 m3·ha-2) and T2 (4133.85 m3·ha-2), and the correlation between soil and plant nutrient content and biomass. Results The result showed that contents of soil organ carbon (SOC), soil total nitrogen (STN), and soil total phosphorus (STP) dropped layer by layer with soil depth increased, and film mulching reduced SOC, STN, and STP contents, and reaching maximum under the T2NFM treatment. T2NFM treatment significantly increased leaf total phosphorus (LTP) and root total nitrogen (RTN). The aboveground and underground biomass reached maximum under the T2FM treatment, followed by higher biomass under FM than the NFM treatment. According to correlation analysis that the biomass of Cyperus esculentus, soil and plant nutrient contents, and yield could be improved by changing the water and fertilizer supply. Conclusion In conclusion, the region's soils are generally nitrogen-limited, therefore supplemental nitrogen fertilization is recommended for agricultural production. In addition, the irrigation of 4133.85 m3·ha-2 under the mulching condition not only improved yield but also saved water resources.

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Assessing the response of vegetation change to drought during 2009–2018 in Yunnan Province, China

Cited by 10 publications

References 46 publications

Response of NDVI of Natural Vegetation to Climate Changes and Drought in China

Response of NDVI of Natural Vegetation to Climate Changes and Drought in China

Impacts of the Western Pacific and Indian Ocean Warm Pools on Wildfires in Yunnan, Southwest China: Spatial Patterns With Interannual and Intraannual Variations

Effects of Film Mulching and Irrigation on Biomass of Leaves, Roots and Tubers and Soil Nutrient Characteristics of Cyperus esculentus L.

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