31 Works

Data from: Impacts of environmental heterogeneity on moss diversity and distribution of Didymodon (Pottiaceae) in Tibet, China

Shanshan Song, Xuehua Liu, Xueliang Bai, Yanbin Jiang, Xianzhou Zhang, Chengqun Yu & Xiaoming Shao
Tibet makes up the majority of the Qinghai-Tibet Plateau, often referred to as the roof of the world. Its complex landforms, physiognomy, and climate create a special heterogeneous environment for mosses. Each moss species inhabits its own habitat and ecological niche. This, in combination with its sensitivity to environmental change, makes moss species distribution a useful indicator of vegetation alteration and climate change. This study aimed to characterize the diversity and distribution of Didymodon (Pottiaceae)...

Data from: Nonlinear response of ecosystem respiration to multiple levels of temperature increases

Ning Chen, Juntao Zhu, Yangjian Zhang, Yaojie Liu, Junxiang Li, Jiaxing Zu & Ke Huang
Global warming exerts profound impacts on terrestrial carbon cycles and feedback to climates. Ecosystem respiration (ER) is one of the main components of biosphere CO2 fluxes. However, knowledge regarding how ER responds to warming is still lacking. In this study, a manipulative experiment with five simulated temperature increases (Control, Warming 1, Warming 2, Warming 3, Warming 4) was conducted to investigate ER responses to warming in an alpine meadow on the Tibetan Plateau. The results...

Data from: Fewer new species colonize at low frequency N addition in a temperate grassland

Yunhai Zhang, Carly J. Stevens, Xiaotao Lü, Nianpeng He, Jianhui Huang & Xingguo Han
1. Biologically reactive nitrogen (Nr) enrichment threatens biodiversity in diverse ecosystems. Previous controlled N addition experiments may overestimate the effects of atmospheric Nr deposition on the rate of species loss, as it has been found that low frequency Nr additions, as used in traditional studies, lead to more rapid biodiversity loss. It remains unclear, however, whether the colonization of new species (gain) or extinction of old species (loss) is the cause of this difference. 2....

Effects of protected areas on welfare of local households: the case of Maasai Mara National Reserve in Kenya

Ayub M.O. Oduor, Dagne Mojo, Chao Fu, Yunli Bai, Huaping Long, Guoqin Wang & Linxiu Zhang
Protected areas are vital for biodiversity conservation although some have been criticized for not providing adequate socio-economic benefits to local people. However, empirical studies on socio-economic impacts of protected areas that control for confounding factors are rare. Here, we assessed the potential impacts of Maasai Mara National Reserve in South-Western Kenya on welfare (indicated by levels of income, consumption, and assets) of, and poverty incidence among 423 randomly selected local households. We used descriptive statistics...

Data from: Synergistic effects of nitrogen and CO2 enrichment on alpine grassland biomass and community structure

Juntao Zhu, Yangjian Zhang, Xian Yang, Ning Chen & Lin Jiang
Global environmental change is altering Earth’s ecosystems. However, much research has focused on ecosystem-level responses, and we know substantially less about community-level responses to global change stressors. Here we conducted a 6-year field experiment in a high-altitude (4600 m above sea level) alpine grassland on the Tibetan Plateau to explore the effects of nitrogen (N) addition and rising atmospheric CO2 concentration on plant communities. Our results showed that N and CO2 enrichment had synergistic effects...

Data from: A synthesis of ecosystem aboveground productivity and its process variables under simulated drought stress

Jiangbo Gao, Linlin Zhang, Ze Tang & Shaohong Wu
1. Projected increases in drought duration and intensity under climate change considerably affect aboveground productivity (ANPP) and associated process variables (photosynthesis rates (Pn), stomatal conductance (gs), soil respiration (Rs), and soil water content (SWC)). 2. Although ANPP has been extensively studied across the ecosystems, there is little consensus on how the spatiotemporal patterns of ANPP will be altered with increasing drought stress. Here, we present a global meta-analysis of ANPP and the four variables (610...

Data from: Variation in leaf anatomical traits from tropical to cold-temperate forests and linkage to ecosystem functions

Nianpeng He, Congcong Liu, Miao Tian, Meiling Li, Hao Yang, Guirui Yu, Dali Guo, Melinda D. Smith, Qiang Yu & Jihua Hou
1. Leaf anatomical traits may reflect plant's adaption to environmental changes and influence ecosystem functions, as they regulate light absorption and gas exchange to some extent. Here, we hypothesized that leaf anatomical traits were closely related to gross primary productivity (GPP) because photosynthesis commonly occurs in the chloroplasts of palisade and spongy tissues in leaf. 2. Eight leaf anatomical traits were measured in 916 plant species inhabiting from tropical to cold-temperate forests in eastern China:...

Data from: Exacerbated grassland degradation and desertification in Central Asia during 2000-2014

Geli Zhang, Chandrashekhar M. Biradar, Xiangming Xiao, Jinwei Dong, Yuting Zhou, Yuanwei Qin, Yao Zhang, Fang Liu, Mingjun Ding & Richard J. Thomas
Grassland degradation and desertification is a complex process, including both state conversion (e.g., grasslands to deserts) and gradual within-state change (e.g., greenness dynamics). Existing studies hardly separated the two components and analyzed it as a whole based on time series vegetation index data, which however cannot provide a clear and comprehensive picture for grassland degradation and desertification. Here we proposed an integrated assessment strategy, by considering both state conversion and within-state change of grasslands, to...

Data from: Variation of stomatal traits from cold-temperate to tropical forests and association with water use efficiency

Congcong Liu, Nianpeng He, Jiahui Zhang, Ying Li, Qiufeng Wang, Lawren Sack & Guirui Yu
1.Stomata control carbon and water vapor exchange between leaves and the atmosphere, thus it can influence water use efficiency and reflect plant adaptation to climate. However, the spatial patterns of leaf stomatal traits and relationships between stomatal trait and water use efficiency across natural communities remain unclear. 2.We measured stomatal density, stomatal size, and stomatal area fraction for 737 plant species from nine forests ranging from tropical to cold-temperate forests. 3.Stomatal density, stomatal size, and...

Data from: Mowing exacerbates the loss of ecosystem stability under nitrogen enrichment in a temperate grassland

Yunhai Zhang, Michel Loreau, Nianpeng He, Guangming Zhang & Xingguo Han
Summary: 1. Global reactive nitrogen (N) is projected to further increase in the coming years. Previous studies have demonstrated that N enrichment weakens the temporal stability of ecosystem primary productivity through decreased biodiversity and species asynchrony. Mowing is a globally common practice in grasslands; and infrequent mowing can maintain or increase plant diversity under N enrichment conditions. However, it is unclear how infrequent mowing affects ecosystem stability in the face of N enrichment. 2. By...

Data from: C:N:P stoichiometry in China's forests: from organs to ecosystems

Jiahui Zhang, Ning Zhao, Congcong Liu, Hao Yang, Meiling Li, Guirui Yu, Kevin Wilcox, Qiang Yu & Nianpeng He
Ecological stoichiometry connects different levels of biology, from the gene to the globe, by scaling up elemental ratios (e.g., carbon [C], nitrogen [N], and phosphorus [P]). Thus, ecological stoichiometry could be a powerful tool for revealing certain physiological processes of plants. However, C:N:P stoichiometry remains unclear at the community and ecosystem level, despite it being potentially important for primary productivity. In this study, we measured the C, N, and P content of different plant organs,...

Data from: Root elemental composition in Chinese forests: implications for biogeochemical niche differentiation

Ning Zhao, Hui Liu, Qiufeng Wang, Ruili Wang, Zhiwei Xu, Cui Jiao, Jianxing Zhu, Guirui Yu, Nianpeng He, Huiming Liu & Cuicui Jiao
1. Trait-based community analysis provides a new approach to integrate functional ecology with community ecology. However, our understanding of the linkages between root chemical traits and community chemical diversity and assembly is still in its infancy. 2. Environmental filtering and niche differentiation are two opposite driving forces of community assembly based on deterministic niche processes. We hypothesize that environmental filtering is a strong driver of root chemical assembly at a large spatial scale, whereas biogeochemical...

Data from: Soil drainage facilitates earthworm invasion and subsequent carbon loss from peatland soil

Xinwei Wu, Rui Cao, Xue Wei, Xinqiang Xi, Peili Shi, Nico Eisenhauer & Shucun Sun
1. Human activities have been a significant driver of environmental changes with tremendous consequences for carbon dynamics. Peatlands are critical ecosystems because they store ~30% of the global soil organic carbon pool and are particularly vulnerable to anthropogenic changes. The Zoige peatland on the eastern Tibet Plateau, as the largest alpine peatland in the world, accounts for 1‰ of global peat soil organic carbon storage. However, this peatland has experienced dramatic climate change including increased...

Data from: Soil gross N ammonification and nitrification from tropical to temperate forests in eastern China

Changhui Wang, Nannan Wang, Jianxing Zhu, Yuan Liu, Xiaofeng Xu, Shuli Niu, Guirui Yu, Xingguo Han & Nianpeng He
1. Nitrogen (N) ammonification and nitrification are two primary microbial processes controlling the availability of soil ammonium (NH4+), a key nutrient for vegetative growth. The large-scale patterns of gross ammonification (GA) and gross nitrification (GN) rates represent soil microbial adaptations to different vegetative and environmental conditions. In this study, we investigated GA and GN rates in nine forest soils along a 3500-km north-south transect in eastern China (NSTEC). 2. We used 15N-labeling techniques, along with...

Data from: Plant functional groups regulate soil respiration responses to nitrogen addition and mowing over a decade

Yue Du, Hongyan Han, Yanfen Wang, Mingxing Zhong, Dafeng Hui, Shuli Niu & Shiqiang Wan
1. Nitrogen (N) deposition and land-use practice (e.g. mowing) could have profound effects on soil respiration. However, the changes in other ecosystem components, such as plant functional groups (PFGs), may control soil carbon (C) efflux response to long term global change. 2. A 10-year (2005-2014) field experiment was conducted with both N addition (10g N m-2 yr-1) and mowing (once a year) in a northern Chinese temperate grassland. We collected continuous data on soil respiration...

Data from: Past distribution of epiphyllous liverworts in China: the usability of historical data

Yanbin Jiang, Tiejun Wang, Yupeng Wu, Ronggui Hu, Ke Huang & Xiaoming Shao
Epiphyllous liverworts form a special group of bryophytes that primarily grow on the leaves of understory vascular plants in tropical and subtropical evergreen broadleaf forests. Being sensitive to moisture and temperature changes, epiphyllous liverworts are often consider to be good indicators of climate change and forest degradation. However, they are a poorly collected and taxonomically complicated group, with an only partly identified distribution pattern. In this study, we built four models based on 24 environmental...

Data from: Contrasting responses of phosphatase kinetic parameters to nitrogen and phosphorus additions in forest soils

Xinyu Zhang, Yang Yang, Chuang Zhang, Shuli Niu, Guirui Yu, Huimin Wang, Evgenia Blagodatskaya, Yakov Kuzyakov, Dashuan Tian, Yuqian Tang, Shuang Liu & Xiaomin Sun
1. Global changes include increasing nitrogen (N) and phosphorus (P) deposition, which affect microbial nutrient demand and biogeochemical cycles. The responses of P-mineralizing enzymes to these global change components are poorly defined and are not specified in forest soils differing in P content. 2. We chose one site in a P-rich and two sites in P-poor forests and established sixteen 20 × 20 m plots at each site. Control, either N only, P only, or...

Data from: Different phylogenetic and environmental controls of first-order root morphological and nutrient traits: evidence of multidimensional root traits

Ruili Wang, Qiufeng Wang, Ning Zhao, Zhiwei Xu, Xianjin Zhu, Cui Jiao, Guirui Yu, Nianpeng He & Cuicui Jiao
1. Although fine roots are essential for the water and nutrient uptake of plants, there is limited understanding of root trait variation and the underlying mechanism. 2. Here, six first-order root morphological and chemical traits were measured for 181 species from eight subtropical and boreal forests to test the hypothesis of different phylogenetic and environmental regulations of root morphological and nutrient traits result in the multidimensions of root traits. 3. Two independent root trait dimensions...

Data from: The effects of warming and nitrogen addition on ecosystem respiration in a Tibetan alpine meadow: the significance of winter warming

Ning Zong, Shoubao Geng, Cheng Duan, Peili Shi, Xi Chai & Xianzhou Zhang
Global warming has become an indisputable fact on the Tibetan Plateau in the last decades. Alpine ecosystems are very sensitive to global warming, while the impact may depend on the degree of atmospheric nitrogen (N) deposition. Previous studies paid more attention on year-round warming, while the effects of winter warming was still lacking. In this paper, a manipulative experiment consisted of warming and N addition was carried out in an alpine meadow since 2010, and...

Data from: Warming alters plant phylogenetic and functional community structure

Juntao Zhu, Yangjian Zhang, Xian Yang, Ning Chen, Shaopeng Li, Pandeng Wang & Lin Jiang
Climate change is known to affect many facets of the Earth’s ecosystems. However, little is known about its impacts on phylogenetic and functional properties of ecological communities. Here we studied the responses of plant communities in an alpine grassland on the Tibetan Plateau to environmental warming across taxonomic, phylogenetic, and functional levels in a six-year multiple-level warming experiment. While low-level warming did not alter either plant species richness or phylogenetic/functional community structure, high-level warming significantly...

Data from: Diversity-decomposition relationships in forests worldwide

Liang Kou, Lei Jiang, Stephan Hättenschwiler, Miaomiao Zhang, Shuli Niu, Xiaoli Fu, Xiaoqin Dai, Han Yan, Shenggong Li & Huimin Wang
Plant species diversity affects carbon and nutrient cycling during litter decomposition, yet the generality of the direction of this effect and its magnitude remain uncertain. With a meta-analysis including 65 field studies across the Earth’s major forest ecosystems, we showed here that on average decomposition was faster when litter was composed of more than one species. These positive biodiversity effects were mostly driven by temperate forests, but more variable in other forests. Litter mixture effects...

Data from: Response of net primary production to land use and climate changes in the middle-reaches of the Heihe River basin

Xingyuan Xiao, Xiubin Li, Tao Jiang, Minghong Tan, Minyue Hu, Yaqun Liu & Wen Zeng
Net primary production (NPP) supplies matter, energy, and services to facilitate the sustainable development of human society and ecosystem. The response mechanism of NPP to land use and climate changes is essential for food security and biodiversity conservation but lacks a comprehensive understanding, especially in arid and semi-arid regions. To this end, taking the middle-reaches of the Heihe River basin (MHRB) as an example, we uncovered the NPP responses to land use and climate changes...

Data from: Regional response of grassland productivity to changing environment conditions influenced by limiting factors

Nianpeng He
Regional differences and regulatory mechanisms of vegetation productivity response to changing environmental conditions constitute a core issue in macroecological researches. To verify the main limiting factors of different macrosystems [temperature-limited Tibetan Plateau (TP), precipitation-limited Mongolian Plateau (MP), and nutrient-limited Loess Plateau (LP)], we conducted a comparative survey of the east-west grassland transects on the three plateaus and explored the factors limiting regional productivity and their underlying mechanisms. The results showed that aboveground net primary productivity...

Forest soil acidification consistently reduces litter decomposition irrespective of nutrient availability and litter type

Ying Shen, Tian Dashuan, Hou Jihua, Wang Jinsong, Zhang Ruiyang, Li Zhaolei, Chen Xinli, Wei Xuefeng, Zhang Xinyu, Niu Shuli & He Yicheng
Litter decomposition is closely related to ecosystem nutrient cycling and functions. Simultaneously, nitrogen (N), phosphorus (P), acid deposition or soil acidification caused by N enrichment are co-occurring in many ecosystems, likely with complex interaction effects on litter decomposition. However, few studies have been conducted to fully distinguish the main and interaction effects of N, P and acid deposition on litter decomposition in forest ecosystem. Thus, we performed a 5-year litter decomposition experiment with N, P,...

Data from: Differential responses of ecosystem carbon flux components to experimental precipitation gradient in an alpine meadow

Fangyue Zhang, Quan Quan, Fangfang Ma, Dashuan Tian, Qingping Zhou & Shuli Niu
1. Changes in precipitation have the potential to cause dramatic changes in ecosystem carbon (C) cycling; however, it remains unclear whether different components of the net ecosystem exchange (NEE) (e.g., C uptake vs. release, plant vs. microbe respiration, aboveground vs. belowground plant respiration), have similar or differential sensitivity to precipitation gradients. 2. We conducted a manipulative field experiment (from 2015 to 2017) with six precipitation treatments, including 1/12 annual precipitation (P), 1/4 P, 1/2 P,...

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  • Institute of Geographic Sciences and Natural Resources Research
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  • Chinese Academy of Sciences
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  • Georgia Institute of Technology
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