Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Rural Eco-environment》 1989-02
Add to Favorite Get Latest Update

EFFECTS OF HYDROLOGICAL CYCLE ON THE BALANCE OF NUTRIENTS IN RICE ECOSYSTEMS IN THE TAI LAKE REGION

Qin Zuping Xu Qi(Dept.of Environmental Science,Wuhan University ) (Nanjing Institute of Soil Science,Academia Sinica )  
This paper deals with the effects of hydrological transfers, i.e., precipitation, irrigation, leaching and surface runoff, on the balance of nitrogen, phosphorus, potassium, calcium, magnesium and sulphur in the rice field ecosystm, cropped with wheat-rice rotation, in the Tai Lake region of Jiangsu Province. The results show-edi a. the sequence of the quantities of the nutrients transfered by hydrological pathway was in the order of Ca, Mg, S,K,N, and P.b.the capacities of calcium and magnesium in the soil nutrient pool were very significantly influenced by hydrological transfers, which resulted in the negative balance for these two elements, w-hile the effect on the capacities of nitrogen and potassium was rather small, the least effect was found in that of phosphorus, c. the contributions of hydrological input to the total input of calcium, magnesium and sulphur ranged from 50% to 88%) on the other hand, the.output contributions were from 73% to 94%. It could be concluded that hydrological transfers played a predominant role in the cycling of these three elements.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 HUANG Tao-zhen YUAN ru-hua (Institute of water resources economy, Hohai University, Nanjing 210098);The Countermeasure about Abnormal Climate Influencing on Taihu Water Resources and Social Economy[J];Acta Geographica Sinica;2000-S1
2 ZHANG Yu-zhen(Environment Science Reasearch Insititute of Fujian,Key Laboratory of Environmental Engineering of Fujian Province,Fuzhou,Fujian 350013,China);Assessment of nitrogen leaching amount on various land use in field[J];Journal of Fuzhou University(Natural Science Edition);2006-04
3 ZHANG Shui-long 1 ZHUANG Ji-ping 2 (1.College of Environmental Science and Safety Engineering,Tianjin University of Technology,Tianjin 300191; 2.Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110015 China);Study on Distributed Model of Non-point Sources Pollution in Agriculture on Watershed Scale[J];Journal of Arid Land Resources & Environment;2003-05
4 JIANG Cuiling, XIA Ziqiang, CUI Guangbo(College of Water Resources and Environment, Hohai Univ., Nanjing 210098, China);Correlation between soil moisture and transport and transformation of nitrogen compounds[J];Journal of Hehai University (Natural Sciences );2003-03
5 JIANG Cui-ling, ZHANG Yi-bing, FAN Xiao-qiu (College of Water Resources and Environment, Hohai Univ., Nanjing 210098, China);Mineralization and accumulation of organic matters in water phase and sediment of ditch wetlands[J];Journal of Hehai University (Natural Sciences );2004-06
6 ;2001 Report on the State of Environment in China[J];Environmental Protection;2002-06
7 ;Research Progress and Prospect of Surface Water Environmental Non-Point Source Pollution[J];Environmental Protection;2003-11
8 Yang Ailing Zhu Yanming (Changchun Institute of Geography, Chinese Academy of Sciences, Changchun 130021);THE STUDY OF NONPOINT SOURCE POLLUTION OF SURFACE WATER ENVIRONMENT[J];;1999-05
9 Zhang Shuiming etal. (Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008);Pollution by Phosphorus in Farmland Drainage to the Taihu- Lake Water system.[J];Environmental Science;1993-06
10 Chen Liding,Fu Bojie(Research Center For Eco Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China);Farm Ecosystem Management and Control of Nonpoint Source Pollution[J];CHINESE JOURNAL OF ENVIROMENTAL SCIENCE;2000-02
【Secondary References】
Chinese Journal Full-text Database 2 Hits
1 PENG Pei-qin{1,2},QIU Shao-jun1(1.College of Resource and Environment,Hunan Agricultural University,Changsha 410128,China;2.Laboratory of Subtropical Agro-ecology,Institute of Subtropical Agriculture,The Chinese Academy of Sciences,Changsha 410125,China);AGRICULTURAL ENVIRONMENT AND ITS SUSTAINABLE DEVELOPMENT AT EMBANKMENT REGION OF DONGTING LAKE[J];Resources and Environment in the Yangtze Basin;2005-03
2 YU Hui-bin1,2,XI Bei-dou2,GUO Xu-jing1,2,ZHAI Li-hua2,3,HE Lian-sheng2,XU Qi-gong2,LIU Hong-liang21.School of Environment,Beijing Normal University,Beijing 100875,China2.Chinese Research Academy of Environmental Sciences,Beijing 100012,China3.Department of Environmental Science and Engineering,Tsinghua University,Beijing 100084,China;Effect of Rainfall Runoff on Nitrogen and Phosphorus Loss in Farming Drainage Ditch[J];Research of Environmental Sciences;2009-04
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved