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Atlas of woody plants in China : distribution and climate
\"Atlas of Woody Plants in China Distribution and Climate documents the spatially-explicit county-level distribution of all 11,405 woody plants in China, together with life form information for most species. It also provides climate information for each species, with the county-level average and range of 12 climatic indices and of vegetation net primary productivity\"--Back cover.
P_MAP
Physiology of woody plants
Woody plants such as trees have a significant economic and climatic influence on global economies and ecologies. This completely revised classic book is an up-to-date synthesis of the intensive research devoted to woody plants published in the second edition, with additional important aspects from the authors' previous book, Growth Control in Woody Plants. Intended primarily as a reference for researchers, the interdisciplinary nature of the book makes it useful to a broad range of scientists and researchers from agroforesters, agronomists, and arborists to plant pathologists and soil scientists. This third edition provides crutial updates to many chapters, including: responses of plants to elevated CO2; the process and regulation of cambial growth; photoinhibition and photoprotection of photosynthesis; nitrogen metabolism and internal recycling, and more. Revised chapters focus on emerging discoveries of the patterns and processes of woody plant physiology.
* The only book to provide recommendations for the use of specific management practices and experimental procedures and equipment*Updated coverage of nearly all topics of interest to woody plant physiologists* Extensive revisions of chapters relating to key processes in growth, photosynthesis, and water relations* More than 500 new references * Examples of molecular-level evidence incorporated in discussion of the role of expansion proteins in plant growth; mechanism of ATP production by coupling factor in photosynthesis; the role of cellulose synthase in cell wall construction; structure-function relationships for aquaporin proteins
eBook
Patterns, determinants and models of woody plant diversity in China
What determines large-scale patterns of species richness remains one of the most controversial issues in ecology. Using the distribution maps of 11 405 woody species in China, we compared the effects of habitat heterogeneity, human activities and different aspects of climate, particularly environmental energy, water–energy dynamics and winter frost, and explored how biogeographic affinities (tropical versus temperate) influence richness–climate relationships. We found that the species richness of trees, shrubs, lianas and all woody plants strongly correlated with each other, and more strongly correlated with the species richness of tropical affinity than with that of temperate affinity. The mean temperature of the coldest quarter was the strongest predictor of species richness, and its explanatory power for species richness was significantly higher for tropical affinity than for temperate affinity. These results suggest that the patterns of woody species richness mainly result from the increasing intensity of frost filtering for tropical species from the equator/lowlands towards the poles/highlands, and hence support the freezing-tolerance hypothesis. A model based on these results was developed, which explained 76–85% of species richness variation in China, and reasonably predicted the species richness of woody plants in North America and the Northern Hemisphere.
Journal Article
Two New Nuclear Isolation Buffers for Plant DNA Flow Cytometry: A Test with 37 Species
BACKGROUND AND AIMS: After the initial boom in the application of flow cytometry in plant sciences in the late 1980s and early 1990s, which was accompanied by development of many nuclear isolation buffers, only a few efforts were made to develop new buffer formulas. In this work, recent data on the performance of nuclear isolation buffers are utilized in order to develop new buffers, general purpose buffer (GPB) and woody plant buffer (WPB), for plant DNA flow cytometry. METHODS: GPB and WPB were used to prepare samples for flow cytometric analysis of nuclear DNA content in a set of 37 plant species that included herbaceous and woody taxa with leaf tissues differing in structure and chemical composition. The following parameters of isolated nuclei were assessed: forward and side light scatter, propidium iodide fluorescence, coefficient of variation of DNA peaks, quantity of debris background, and the number of particles released from sample tissue. The nuclear genome size of 30 selected species was also estimated using the buffer that performed better for a given species. KEY RESULTS: In unproblematic species, the use of both buffers resulted in high quality samples. The analysis of samples obtained with GPB usually resulted in histograms of DNA content with higher or similar resolution than those prepared with the WPB. In more recalcitrant tissues, such as those from woody plants, WPB performed better and GPB failed to provide acceptable results in some cases. Improved resolution of DNA content histograms in comparison with previously published buffers was achieved in most of the species analysed. CONCLUSIONS: WPB is a reliable buffer which is also suitable for the analysis of problematic tissues/species. Although GPB failed with some plant species, it provided high-quality DNA histograms in species from which nuclear suspensions are easy to prepare. The results indicate that even with a broad range of species, either GPB or WPB is suitable for preparation of high-quality suspensions of intact nuclei suitable for DNA flow cytometry.
Journal Article
Juniper (Juniperus virginiana) encroachment into grassland results in increased trace-element inputs
Background and aims
Woody plant encroachment poses a significant threat to grasslands globally, and in the southcentral USA, juniper (
Juniperus virginiana
) is rapidly taking over large areas of grasslands. Despite ongoing research, the reasons behind the rapid encroachment of juniper species in Oklahoma remain elusive. We hypothesized that the interaction between juniper canopy, aeolian, and wet-deposition processes lead to a modification in trace-element inputs through stemflow and throughfall. This, in turn, plays a crucial role in determining the success of juniper encroachment.
Methods
We measured the influx of trace-elements in stemflow and throughfall beneath juniper canopies of different sizes, contrasting the results with those obtained under ambient precipitation.
Results
Our research unveiled a significant influence of the juniper canopy on trace-element inputs via stemflow and throughfall. Specifically, there was a significant increase in manganese, boron, and chlorine inputs, coupled with a decrease in copper inputs. Additionally, there was an increase in most cations and sulfate.
Results
Our results indicate that juniper encroachment alters the profile of trace-element, cation, and anion inputs beneath their canopies. Increased levels of manganese and reduction of copper inputs into the ecosystem may enhance the juniper growth, creating a positive feedback mechanism that could contribute to the success of juniper and other woody encroachers.
Journal Article
Regenerated woody plants influence litter decomposition more than the dominant timber species present in a Chinese fir plantation
BackgroundPlants can directly affect litter decomposition by producing litter materials of different qualities. However, whether living plants have indirect effects on litter decomposition by affecting changes in forest microenvironments is presently unclear in plantation forests.MethodsWe addressed this issue by studying the decomposition of the leaf litter and fine roots of Chinese fir [Cunninghamia lanceolata (Lamb.) Hook.], a timber species widely planted in China, in 113 non-neighboring quadrats of varying basal area of the dominant plant species (i.e., Chinese fir) and distinct basal areas and species richness of regenerated woody plants (i.e., species other than Chinese fir) in a subtropical Chinese fir forest.ResultsOur results showed that fine roots decomposed significantly more rapidly than leaf litter possibly because fine roots were easier access to mineralized nutrients and microbes compared with leaf litter. Further analyses showed that leaf litter and fine root decomposition rates were significantly controlled by the plant community attributes. The decomposition of both leaf litter and fine roots was mainly controlled by woody species regenerated during stand development rather than by Chinese fir. Specifically, leaf litter and fine root decomposition rates decreased with increasing basal area of regenerated woody plants, possibly due to nutrient competition and/or reduced photodegradation.ConclusionsThis study provides empirical evidence that woody species regenerated during stand development play a certain role in determining litter decomposition rates through plant-soil interactions in Chinese fir plantations. Regenerated woody plants should be considered in future studies on soil carbon and nutrient cycling in plantation forest.
Journal Article
Characteristics of broadleaved woody phytoliths and their preservation in soils in the mid-subtropical zone of China
Background and aimsPhytolith analysis is a promising tool for paleovegetation reconstruction. However, compared with grass phytoliths, there are few studies that have classified the phytoliths of trees. Therefore, reliable definitions of phytolith types in woody plants and studies of representative woody phytoliths in soils are needed to provide an improved basis for reliable phytolith-based vegetation reconstruction.MethodsTo explore the morphology of woody phytoliths and their preservation in soils, we described the phytolith morphology of 60 common broadleaved woody plants in the mid-subtropical zone of China, based initially on anatomical origin, and then on shape and finally on texture. We also for the first time established an index (R value) to explore the preservation of broadleaved woody phytoliths in soil in this region.ResultsWe divided the phytoliths of broadleaved woody plants into 6 major types and 35 sub-types. The 6 major types are: Epidermal Cell, Silicified stomata, Tracheary, Favose, Haircell, and Others. We found some degree of correspondence between different phytolith types and the parent plants. Fagaceae, Lauraceae, Magnoliaceae, Rosaceae, Anacardiaceae and Euphorbiaceae could be clearly distinguished from other families based on phytoliths. Only eight types of broadleaved woody phytoliths were present in the soils. Elongate attenuate, Elongate entire, and Polyhedral were better preserved in soils than the other types (Elongate entire attenuate, Tabular sinuate, Hair, Sclereid, and Favose).ConclusionOur results provide a more accurate reference for broadleaved wood phytoliths in interpreting paleovegetation in this region.
Journal Article
Common Woody Plants and Cacti of South Texas
Woody plants and cacti are vital staple foods for cattle, deer, and other wildlife in drought-prone South Texas. Ranchers, hunters, and land managers who need to identify these plants relied on A Field Guide to Common South Texas Shrubs (published by Texas Parks & Wildlife Press and distributed by UT Press), which is no longer in print. Responding to ongoing demand for the book, Richard B. Taylor has completely updated and expanded it with seven new species, new photographs, and a quick plant identification key. Common Woody Plants and Cacti of South Texas is an easy-to-use plant identification field guide to fifty species that comprise an estimated 90 percent of the region’s woody canopy cover north of the Rio Grande Valley. The species accounts include photographs, descriptions, values to livestock and wildlife, and nutritional information. The book also provides historical perspectives and information on brush management techniques and strategies, as well as habitat appraisal. All of these resources will enable readers to analyze stocking rates for deer and cattle, evaluate a prospective hunting lease, or buy property.
eBook
Linking woody plant species richness with selected ecosystem services and dendrometric features in Okalma natural forest reserve
While the human population is increasing globally, the sustainability of ecosystem services is declining. Okalma Natural Forest Reserve in Sudan hosts high woody plant species richness that support ecosystem services, soil health, and local livelihood. This study aims to assess the relationship between woody plant species richness, carbon stock, dendrometric features, soil chemical properties, recreation services, and income sources. Data were collected from 178 circular sample plots with a radius of 17.84 m (area of 1000 m
3
each) along 17 transect lines, complemented by 510 questionnaires and soil analysis. We recorded 30 woody species (tree and shrubs), with species richness positively correlated with carbon stock (
R
2
= 0.88), tree height (
R
2
= 0.82) and recreation preferences (R
2
= 0.90), but negatively correlated with soil sodium and nitrogen (R
2
= - 0.91). Importance value index (IVI), basal area, and seedling density varied significantly (
P
< 0.05) among sites. Outdoor recreation activities such as enjoying fresh air and forest fruit were preferred over hunting and games. However, the high dependence on non-timber forest products highlights the need for sustainable use and industrialization of these resources. We recommend conserving species with low density, enhancing recreation facilities, and maintaining soil health for sustainable management of the reserve.
Journal Article