作者：
Ning, Chen*;Xiang, Wenhua;Mueller, Gregory M.;Egerton-Warburton, Louise M.;Yan, Wende;...
期刊：
Plant and Soil,2020年446(1-2):179-193 ISSN：0032-079X
通讯作者：
Ning, Chen
作者机构：
[Liu, Shuguang; Xiang, Wenhua; Yan, Wende; Ning, Chen] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, 498 Southern Shaoshan Rd, Changsha 410004, Peoples R China.;[Ning, Chen] Northwestern Univ, Program Plant Biol & Conservat, Evanston, IL 60208 USA.;[Mueller, Gregory M.; Egerton-Warburton, Louise M.] Chicago Bot Garden, Chicago, IL 60022 USA.
通讯机构：
[Ning, Chen] C;Cent South Univ Forestry & Technol, Fac Life Sci & Technol, 498 Southern Shaoshan Rd, Changsha 410004, Peoples R China.
关键词：
Community structure and function;Ectomycorrhizal fungi;Extracellular enzyme;Exotic pine;Rhizopogon;Russula
摘要：
Wang, H.; Yan, W.; Wang, J., and Duan, W., 2020. Exploring distribution rules and variation trends of precipitation in the upper Lijiang River from 1951 to 2016, Guangxi Province, China. In: Hu, C. and Cai, M. (eds.), Geo-informatics and Oceanography. Journal of Coastal Research, Special Issue No. 105, pp. 1–5. Coconut Creek (Florida), ISSN 0749-0208.Based on the relevant modules of ArcGIS 10.5 platform, the singly independent precipitation datum of 25 hydrological and meteorological observation stations from 1960 to 2016 was converted into areal datum of different statistical units through multiscale transformation to study change rules and trends of precipitation in the upper Lijiang River. The variation coefficient and Mann-Kendall test methods were applied to analyzing the difference and significance of precipitation. According to the study, precipitation distribution within a year was highly uneven with an obvious difference between the rainy and dry seasons; the interannual changes of precipitation showed a slightly increasing trend in the high and low interlaced. The increasing trends of precipitation during the rainy season and decreasing during the dry season will further aggravate the contradiction between water resource shortages during the dry season and increasing flooding disasters during the rainy season in the Lijiang River basin.
期刊：
Ecology and Evolution,2019年9(9):5338-5347 ISSN：2045-7758
通讯作者：
Deng, Xiangwen
作者机构：
[Ouyang, Shuai; Xiang, Wenhua; Yan, Wende; Wu, Anchi; Fang, Xi; Deng, Xiangwen] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha, Hunan, Peoples R China.;[Ouyang, Shuai; Xiang, Wenhua; Yan, Wende; Wu, Anchi; Fang, Xi; Deng, Xiangwen] Natl Engn Lab Appl Technol Forestry & Ecol South, Changsha, Hunan, Peoples R China.;[Ouyang, Shuai; Xiang, Wenhua; Yan, Wende; Wu, Anchi; Fang, Xi; Deng, Xiangwen] Huitong Natl Stn Sci Observat & Res Chinese Fir P, Huitong, Peoples R China.;[He, Honglin] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China.;[Ren, Xiaoli; He, Honglin] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China.
通讯机构：
[Deng, Xiangwen] C;Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha, Hunan, Peoples R China.
关键词：
community structure;neutral theory model;niche model;secondary forests;spatial scaling;species abundance distributions
摘要：
To quantify and assess the processes underlying community assembly and driving tree species abundance distributions(SADs) with spatial scale variation in two typical subtropical secondary forests in Dashanchong state-owned forest farm, two 1-ha permanent study plots (100-m x 100-m) were established. We selected four diversity indices including species richness, Shannon-Wiener, Simpson and Pielou, and relative importance values to quantify community assembly and biodiversity. Empirical cumulative distribution and species accumulation curves were utilized to describe the SADs of two forests communities trees. Three types of models, including statistic model (lognormal and logseries model), niche model (broken-stick, niche preemption, and Zipf-Mandelbrodt model), and neutral theory model, were estimated by the fitted SADs. Simulation effects were tested by Akaike's information criterion (AIC) and Kolmogorov-Smirnov test. Results found that the Fagaceae and Anacardiaceae families were their respective dominance family in the evergreen broad-leaved and deciduous mixed communities. According to original data and random sampling predictions, the SADs were hump-shaped for intermediate abundance classes, peaking between 8 and 32 in the evergreen broad-leaved community, but this maximum increased with size of total sampled area size in the deciduous mixed community. All niche models could only explain SADs patterns at smaller spatial scales. However, both the neutral theory and purely statistical models were suitable for explaining the SADs for secondary forest communities when the sampling plot exceeded 40 m. The results showed the SADs indicated a clear directional trend toward convergence and similar predominating ecological processes in two typical subtropical secondary forests. The neutral process gradually replaced the niche process in importance and become the main mechanism for determining SADs of forest trees as the sampling scale expanded. Thus, we can preliminarily conclude that neutral processes had a major effect on biodiversity patterns in these two subtropical secondary forests but exclude possible contributions of other processes.
作者：
Ning, Chen*;Mueller, Gregory M.;Egerton-Warburton, Louise M.;Xiang, Wenhua;Yan, Wende
期刊：
Forests,2019年10(3):263- ISSN：1999-4907
通讯作者：
Ning, Chen
作者机构：
[Xiang, Wenhua; Yan, Wende; Ning, Chen] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;[Ning, Chen; Mueller, Gregory M.; Egerton-Warburton, Louise M.] Northwestern Univ, Program Plant Biol & Conservat, Evanston, IL 60208 USA.;[Ning, Chen; Mueller, Gregory M.; Egerton-Warburton, Louise M.] Chicago Bot Garden, Glencoe, IL 60022 USA.
通讯机构：
[Ning, Chen] C;[Ning, Chen] N;Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;Northwestern Univ, Program Plant Biol & Conservat, Evanston, IL 60208 USA.;Chicago Bot Garden, Glencoe, IL 60022 USA.
期刊：
Proceedings of the National Academy of Sciences of the United States of America,2019年116(51):25491-25496 ISSN：0027-8424
通讯作者：
Liu, Shuguang
作者机构：
[Zhao, Meifang; Ogbodo, U. S.; Jing, Lei; Liu, Shuguang; Huang, Zhihong; Yan, Wende; Peng, Xi; Feng, Shuailong] Cent South Univ Forestry & Technol, Natl Engn Lab Appl Technol Forestry & Ecol Southe, Changsha 410004, Hunan, Peoples R China.;[Zhao, Meifang; Ogbodo, U. S.; Jing, Lei; Liu, Shuguang; Huang, Zhihong; Yan, Wende; Peng, Xi; Feng, Shuailong] Cent South Univ Forestry & Technol, Coll Biol Sci & Technol, Changsha 410004, Hunan, Peoples R China.;[Wu, Yiping] Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Earth & Environm Sci, Xian 710049, Shaanxi, Peoples R China.;[Lv, Yihe] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China.;[McDonald, Morag A.; Smith, Andrew R.; Sarkissian, Arbi J.; Patil, Sopan D.] Bangor Univ, Sch Nat Sci, Bangor LL57 2UW, Gwynedd, Wales.
通讯机构：
[Liu, Shuguang] C;Cent South Univ Forestry & Technol, Natl Engn Lab Appl Technol Forestry & Ecol Southe, Changsha 410004, Hunan, Peoples R China.;Cent South Univ Forestry & Technol, Coll Biol Sci & Technol, Changsha 410004, Hunan, Peoples R China.
关键词：
climate change;inland water bodies;land use change;size-abundance
摘要：
Water bodies (WBs), such as lakes, ponds, and impoundments, provide essential ecosystem services for human society, yet their characteristics and changes over large areas remain elusive. Here we used unprecedented data layers derived from all Landsat images available between 1984 and 2015 to understand the overall characteristics and changes of WBs between 2 epochs (i.e., 1984 to 1999 and 2000 to 2015) in China. Results show that the abundance estimate of WBs greater than 1 km(2) and the total WB surface area were 0.3 to 1.5 times and 0.2 to 0.5 times more than the previous estimates, respectively. The size-abundance and shoreline-area relationships of WBs in China conformed to the classic power scaling law, in contradiction to most previous studies. WB changes with various occurrence probabilities show widespread coexistence of disappearance of existent and emergence of new WBs across China driven primarily by human activities and climate change. Our results highlight the importance of using appropriate long-term satellite data to reveal the true properties and dynamics of WBs over large areas, which is essential for developing scaling theories and understanding the relative impacts of human activities and climate change on water resources in the world.
摘要：
Little information is available on horizontal precipitation in forest land in semi-humid climate regions. In this study, the quantity and duration of horizontal precipitation were investigated using the high precision weighing lysimeter system in the mountainous areas of northern China during the experiment year 2011 and 2012. The purpose of this study was to better understand the formation mechanisms of horizontal precipitation in the semi-humid climate region. The results showed that hourly values of horizontal precipitation distributed between 0 and 0.1 mm, and that the one-night values distributed between 0.2 and 0.4 mm. The number of days with horizontal precipitation accounted for about 45% of the whole year. The average monthly amount of horizontal precipitation was 4.5 mm in the non-growing season, while it was a mere 1.6 mm in the growing season. The total amount of horizontal precipitation in the year was about 33 mm. Horizontal precipitation represented about 4.61% and 4.23% of the annual precipitation in 2011 and 2012. During the non-growing season, water vapor absorbed by the soil was greater than canopy and soil condensation, not only in terms of frequency, but also in the cumulated quantity. On a typical day, the canopy and soil condensation was 0.07 mm, accounting for 31.81% of total quantity of horizontal precipitation (0.22 mm). Air temperature, soil temperature and wind speed were negatively correlated with the quantity and duration of horizontal precipitation. This research could provide information for a better understanding of the ecological significance of horizontal precipitation in the semi-humid climate region in northern China.
作者机构：
中南林业科技大学生命科学与技术学院, 长沙, 410004;湖南会同杉木林国家重点野外科学观测研究站, 湖南会同杉木林国家重点野外科学观测研究站, 湖南, 会同, 418307;南方林业生态应用技术国家工程实验室, 南方林业生态应用技术国家工程实验室, 长沙, 410004;[赵梅芳] Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China, Huitong National Field Station for Scientific Observation and Research of Chinese Fir Plantation Ecosystem in Hunan Province, Huitong,, Hunan 418307, China;[闫文德; 王光军; 玉昉永; 彭曦; 王凤琪] Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, 410004, China, Huitong National Field Station for Scientific Observation and Research of Chinese Fir Plantation Ecosystem in Hunan Province, Huitong,, Hunan 418307, China, National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Changsha, 410004, China
通讯机构：
[Zhao, M.-F.] F;Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
作者：
Ning, Chen*;Mueller, Gregory M.;Egerton-Warburton, Louise M.;Wilson, Andrew W.;Yan, Wende;...
期刊：
Forests,2018年9(3) ISSN：1999-4907
通讯作者：
Ning, Chen
作者机构：
[Xiang, Wenhua; Yan, Wende; Ning, Chen] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;[Ning, Chen; Mueller, Gregory M.; Egerton-Warburton, Louise M.; Wilson, Andrew W.] Northwestern Univ, Program Plant Biol & Conservat, Evanston, IL 60208 USA.;[Ning, Chen; Mueller, Gregory M.; Egerton-Warburton, Louise M.; Wilson, Andrew W.] Chicago Bot Garden, Glencoe, IL 60022 USA.;[Wilson, Andrew W.] Denver Bot Gardens, Sam Mitchel Herbarium Fungi, Denver, CO 80206 USA.
通讯机构：
[Ning, Chen] C;[Ning, Chen] N;Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;Northwestern Univ, Program Plant Biol & Conservat, Evanston, IL 60208 USA.;Chicago Bot Garden, Glencoe, IL 60022 USA.
摘要：
This study provides a complete account of global warming potential (GWP) and greenhouse gas intensity (GHGI) in relation to a long-term water management experiment in Chinese double-rice cropping systems. The three strategies of water management comprised continuous (year-round) flooding (CF), flooding during the rice season but with drainage during the midseason and harvest time (F-D-F), and irrigation only for flooding during transplanting and the tillering stage (F-RF). The CH4 and N2O fluxes were measured with the static chamber method. Soil organic carbon (SOC) sequestration rates were estimated based on the changes in the carbon stocks during 1998-2014. Longer periods of soil flooding led to increased CH4 emissions, reduced N2O emissions, and enhanced SOC sequestration. The net GWPs were 22,497, 8,895, and 1,646 kg CO2-equivalent ha(-1) yr(-1) for the CF, F-D-F, and F-RF, respectively. The annual rice grain yields were comparable between the F-D-F and CF, but were reduced significantly (by 13%) in the F-RF. The GHGIs were 2.07, 0.87, and 0.18 kg CO2-equivalent kg(-1) grain yr(-1) for the CF, F-D-F, and F-RF, respectively. These results suggest that F-D-F could be used to maintain the grain yields and simultaneously mitigate the climatic impact of double rice-cropping systems.
