Physiological Characteristics and Nitrogen Absorption/Distribution Features of Salix matsudana Under Different Nitrogen
This chapter discusses the growth, nitrogen absorption/distribution, and physiological responses of Salix matsudana seedlings cultured in hydroponic solution with different nitrogen sources ammonium nitrogen (\( {{{\text{NH}}_{4}}^{ + }} \) –N) or nitrate
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Forestry Measures for Ecologically Controlling Non-point Source Pollution in Taihu Lake Watershed, China
Forestry Measures for Ecologically Controlling Non-point Source Pollution in Taihu Lake Watershed, China
Jianfeng Zhang
Forestry Measures for Ecologically Controlling Non-point Source Pollution in Taihu Lake Watershed, China
123
Jianfeng Zhang Institute of Subtropical Forestry Chinese Academy of Forestry Hangzhou China
ISBN 978-981-10-1849-7 DOI 10.1007/978-981-10-1850-3
ISBN 978-981-10-1850-3
(eBook)
Library of Congress Control Number: 2016945114 © Springer Science+Business Media Singapore 2016 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper This Springer imprint is published by Springer Nature The registered company is Springer Science+Business Media Singapore Pte Ltd.
Preface
Taihu Lake basin is located in the core area of the Yangtze River Delta; the total area of the basin is 36.9 thousand km2 of which the water area of Taihu is 2338 km2, covering Jiangsu, Zhejiang, and Anhui provinces and Shanghai city. Owing to favorable climate and natural conditions, this region was developed very early and is playing an important role in socioeconomic development of China. In 2005, the GDP (gross domestic product) of the basin area accounted for about 11.7 % of the whole country. With a rapid development of economy and society in Taihu Lake basin, the water consumption and wastewater discharge are increasing, and the water quality of the basin is declining since past 30 years. During 2005, the water quality of the lake basin along the watershed of 2700 km long was studied and found that for over 89 % of the basin, the annual water quality deterioration was of class III standard, and 61 % was worse than the class V standard. The average water quality comprehensive evaluation of Taihu Lake was for the inferior class V (including TP (total phosphorus), TN (total nitrogen) index), whereas the NH−3 -N index was for the class II, TP was for class
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