%0 Journal Article
%T Spatio-temporal variation and associated affecting factors of soil pH in the past 20 years of Jiangsu Province, China<br>近20年来江苏省土壤pH值时空变化及其驱动力
%A WANG Zhi-Gang
%A ZHAO Yong-Cun
%A LIAO Qi-Lin
%A HUANG Biao
%A SUN Wei-Xia
%A QI Yan-Bing
%A SHI Xue-Zheng
%A YU Dong-Sheng
%A <br>王志刚
%A 赵永存
%A 廖启林
%A 黄标
%A 孙维侠
%A 齐雁冰
%A 史学正
%A 于东升
%J 生态学报
%D 2008
%I 
%X The changes of soil pH significantly affect soil chemical properties and even whole environmental ecosystems. For this reason, the studies on them have attracted and con acidification is being accelerated with rapid industrial deve great deal of eco-environmental problems. Some authors tinue to attract much academic attention. Especially the soil lopment and unreasonable farming practices, which has led to a have conducted much research on the effects of some unique affecting factors on soil pH changes in some relatively uniform regions. However, in-situ studies of their comprehensive effects on soil pH changes in some complex regions have been seldom investigated. In this study, the spatio-temporal variation and associated factors which affect soil pH changes of Jiangsu province with high rapid industrial development and dense population were discussed by comparing the two spatial distribution maps of soil pH in 1980 and 2003. The results showed that the spatial distribution pattern of soil pH in 2003 was similar to that in 1980 with lower soil pHs in the south part of the province than those in the north because of the difference of soil types. However, significantly decreasing changes were also observed in some local regions from 1980 to 2003. Intensively acidified soils were identified in Yishu mound and depressed plain soil region, Lixiahe depressed plain soil region, Ningzhenyang low mountain and undulated soil region, and Taihu Lake plain soil region. In the former two regions the dominant affecting factors on decreased soil pH are farming practices such as fertilizing, incorporation of crop residues and soil utilization. As for the latter two, besides farming practices, industrialization and urbanization also are main affecting factors. Soil pH has increased in some areas of Ningzhenyang low mountain and undulated soil region and Taihu Lake soil region mainly due to soil utilization changes, structures, and road construction. Among soil groups, pH changes of Fluvo-aquic soils in the past 20 years were not significant, but those in paddy soils significantly decreased, particularly in the Lixiahe depressed plain soil region where decreasing trend of soil pH may be accelerated. This is because acidic buffering capacity of Fluvo-aquic soils is greater than that of paddy soils. In conclusion, farming practices, industrialization and urbanization are important affecting factors of soil pH changes and have led to significantly changes in some local regions. In order to the soil sustainable utilization in rapid economic developing regions, the government must mention the soil pH changes and take some effective measures to adjust and guide agriculture and industry so that the sparse soil resources in the densely populated area can be appropriately utilized.
%K soil pH
%K spatio-temporal variation
%K affecting factors
%K Jiangsu Province<br>土壤pH
%K 时空变化
%K 驱动因素
%K 江苏省
%K 江苏省
%K 土壤
%K 时空变化
%K 驱动力
%K Jiangsu
%K Province
%K past
%K soil
%K pH
%K affecting
%K factors
%K associated
%K 利用方式
%K 的管理
%K 水稻土
%K 酸缓冲性能
%K 潮土
%K 土类
%K 道路
%K 建筑
%K 种植方式
%K 山地
%K 工业化和城市化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=7D2B080E3D1CD14AA335D6A897AF2C06&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=29286F2CB73F1D0E&eid=3255EF7905220E84FDA04757DDBF5067&journal_id=1000-0933&journal_name=生态学报&referenced_num=2&reference_num=43