Article
Environmental Sciences
Qiankun Guo, Ronghua Zhong, Zhijie Shan, Xingwu Duan
Summary: This study analyzed the changes in vegetation cover and the effects of precipitation in the dry valleys of Southwest China from 2000 to 2020. The results showed significant decreasing trends in vegetation cover in the dry-hot valleys and dry-warm valleys, mainly due to decreased precipitation, while significant increasing trends were observed in the dry-temperate valleys due to increased precipitation. The study also highlighted the impact of anthropogenic activities on vegetation cover in the dry valleys.
Article
Agronomy
Guanyu Dong, Lei Fan, Rasmus Fensholt, Frederic Frappart, Philippe Ciais, Xiangming Xiao, Stephen Sitch, Zanpin Xing, Ling Yu, Zhilan Zhou, Mingguo Ma, Xiaowei Tong, Qing Xiao, Jean-Pierre Wigneron
Summary: Southwest China has been the largest terrestrial carbon sink in China, but recent droughts caused by high precipitation variability have posed a threat to vegetation productivity. The impact of precipitation anomalies on vegetation primary productivity is still poorly understood.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
Qian Shi, Caiming Shen, Hongwei Meng, Linpei Huang, Qifa Sun
Summary: Based on a study of the vegetation and fire history of Lake Haixihai in southwestern China over the past 1640 years, the results show that both climatic conditions and human activities have significantly influenced vegetation succession, forest fires, and soil erosion in the lake catchment.
Article
Biodiversity Conservation
Yuyi Wang, Xi Chen, Man Gao, Jianzhi Dong
Summary: This study uses the Normalized Difference Vegetation Index (NDVI) to analyze vegetation changes in southwest China from 2000 to 2015. The results suggest that human activities and climate change are the main driving forces behind vegetation changes.
ECOLOGICAL INDICATORS
(2022)
Article
Engineering, Civil
Dawei Peng, Qiuwen Zhou, Xin Tang, Weihong Yan, Meng Chen
Summary: This study analyzes the influence of vegetation restoration on soil moisture changes in the karst region of southwest China. The results show that vegetation restoration can both increase and decrease soil moisture, with seasonal and annual variations. Additionally, vegetation restoration effectively moderates the drying tendency of soil caused by climate warming.
JOURNAL OF HYDROLOGY
(2022)
Article
Forestry
Hui Shao, Yuandong Zhang, Zhen Yu, Fengxue Gu, Zhongtong Peng
Summary: The extreme drought in southwest China in 2009/2010 was a major disaster that caused unprecedented damage to the region's ecology and socioeconomic development. The study reveals differences in the resilience of different types of vegetation to the extreme drought, and highlights the importance of surface soil moisture in determining vegetation resistance in the region.
Article
Environmental Sciences
Chuanjie Lin, Tingting Huo, Fumo Yang, Bin Wang, Yang Chen, Huanbo Wang
Summary: This study conducted in an urban site in southwest China found that PM2.5 had the highest concentration in winter and lowest in summer, with SO42-, NH4+, and NO3- being the predominant ions. The major inorganic ions in precipitation also showed similar seasonal patterns.
AEROSOL AND AIR QUALITY RESEARCH
(2021)
Article
Environmental Sciences
Antonio Sanchez-Falfan, Manuel Esperon-Rodriguez, Juan Cervantes-Perez, Monica Ballinas, Victor L. Barradas
Summary: The water balance is influenced by fog, which is a type of low-lying cloud with a significant contribution of water to ecosystems. This study investigated the fog-water contribution to the water balance and the impact of vegetation on water supply. The Central Mountain Region of Veracruz in Mexico was used as a case study, and various components of the water balance were measured. The results showed that fog had a larger volume of water compared to rain, with fog interception contributing the highest proportion to the total water gain.
Article
Forestry
Ruiwu Zhou, Yiping Zhang, Mingchun Peng, Yanqiang Jin, Qinghai Song
Summary: This study used classification and regression tree models to predict the potential distribution and estimate the carbon sequestration potential (CSP) of forest vegetation in Yunnan Province, China, under different simulation scenarios. The results showed that the minimum temperature of the coldest month was the main factor limiting the suitable habitat of forest vegetation. Increasing temperature and decreasing precipitation decreased the potential distribution area of most forest vegetation types, with warm-temperate coniferous forests being the least sensitive. The CSP of vegetation increased under temperature increase and precipitation decrease scenarios. This finding is important for decision making and planning.
Article
Engineering, Civil
Jiaojiao Han, Lide Tian, Zhongyin Cai, Wei Ren, Weiwei Liu, Jin Li, Jiangrong Tai
Summary: This study quantified the partitioning of evapotranspiration in a Pinus yunnanensis forest ecosystem in southwest China. The results showed that plant transpiration is the main component of evapotranspiration, and soil water content is a key factor influencing the seasonal variation of evapotranspiration.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Tingting Ma, Sen Xu, Jun Zhong, Si-Liang Li, Shuai Chen, Wanfa Wang, Cong-Qiang Liu
Summary: This study quantitatively analyzed the carbon budget between weathering by carbonic and sulfuric acids in mountainous catchments in southwest China using a Monte Carlo inversion model. The results showed that the majority of major cations (>90%) is derived from carbonate dissolution, while riverine sulfate budget is predominately contributed by pyrite oxidation and precipitation. Furthermore, the reanalysis of prior datasets of karst-dominated catchments in China highlighted the important role of pyrite oxidation and acid precipitation in the carbon budget.
JOURNAL OF HYDROLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Congcong Li, Qiang Yu, Yongqiang Zhang, Ning Ma, Jing Tian, Xuanze Zhang
Summary: This study estimates the changes in terrestrial water storage (TWS) in China from 2003 to 2017 and finds that annual precipitation in northern China plays a more important role in controlling TWS variability than that in southern China. Actual evapotranspiration is the dominant driver of the declining TWS trend in northern basins.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Fei Huo, Zhihong Jiang, Hongyun Ma, Zhenhua Li, Yanping Li
Summary: The study found that anthropogenic aerosols in China have a significant impact on surface air temperature and precipitation in East Asia, resulting in cooling and reduced precipitation, particularly in Southwest China. The direct and indirect effects of aerosols decrease shortwave radiation, affecting cloud formation and precipitation.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Ziqi Liu, Rong She, Kangning Xiong, Yuan Li, Lulu Cai
Summary: This study aimed to explore the effects of different vegetation restoration types on soil hydrology characteristics in the Karst Plateau Gorge. The results showed that different vegetation types had different impacts on soil moisture storage and exhibited distinct characteristics in dry-wet seasons. The drought-tolerant crop Zanthoxylum bungeanum responded more significantly to rainfall, with the highest effective replenishment amount and efficiency, highlighting the importance of proper artificial recharge in agricultural production.
Article
Environmental Sciences
Xuemei Zhang, Yuemin Yue, Xiaowei Tong, Kelin Wang, Xiangkun Qi, Chuxiong Deng, Martin Brandt
Summary: Studies have shown a greening trend in the karst area of Yunnan-Guangxi-Guizhou region since 2000, with eco-engineering playing a significant role in explaining this trend. Different vegetation trends in various areas are influenced by a combination of factors, emphasizing the importance of understanding these patterns in planning ecological restoration efforts, which can be applied to other restoration areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
