Changes in Soil Hot-Water Extractable C, N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

doi:10.1016/S2095-3119(13)60527-4

Journal of Integrative Agriculture ›› 2013, Vol. 12 ›› Issue (12): 2250-2259.DOI: 10.1016/S2095-3119(13)60527-4

Changes in Soil Hot-Water Extractable C, N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

XUE Sha, LI Peng, LIU Guo-bin, LI Zhan-bin, ZHANG Chao

1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau of Northwest A&F University, Yangling 712100, P.R.China
2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry Water Resources, Yangling 712100, P.R.China
3.Key Laboratory of Northwest Water Resources and Environment Ecology, Ministry of Education/Xi’an University of Technology, Xi’an 710048, P.R.China

收稿日期:2012-10-25 出版日期:2013-12-01 发布日期:2013-12-17
通讯作者: LI Peng, Tel: +86-29-82312658, E-mail: lipeng74@163.com
作者简介:XUE Sha, Mobile: 15209242415, E-mail: xuesha100@163.com
基金资助:
This work was financially supported by the Strategic Technology Project of Chinese Academy of Sciences, China (XDA05060300), the Science and Technology Research and Development Program of Shaanxi Province, China (2011KJXX63), and the Fundamental Research Funds for the Central Universities, China (ZD2013021). The authors thank the Ansai Research Station of Soil and Water Conservation of the Chinese Academy of Sciences for conducting laboratory analysis of soil samples and for providing fieldwork support. Thanks are given to the two anonymous reviewers and editors of the journal for their valuable comments, suggestions, and revisions of this manuscript.

Changes in Soil Hot-Water Extractable C, N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

XUE Sha, LI Peng, LIU Guo-bin, LI Zhan-bin, ZHANG Chao

1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau of Northwest A&F University, Yangling 712100, P.R.China
2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry Water Resources, Yangling 712100, P.R.China
3.Key Laboratory of Northwest Water Resources and Environment Ecology, Ministry of Education/Xi’an University of Technology, Xi’an 710048, P.R.China

Received:2012-10-25 Online:2013-12-01 Published:2013-12-17
Contact: LI Peng, Tel: +86-29-82312658, E-mail: lipeng74@163.com
About author:XUE Sha, Mobile: 15209242415, E-mail: xuesha100@163.com
Supported by:
This work was financially supported by the Strategic Technology Project of Chinese Academy of Sciences, China (XDA05060300), the Science and Technology Research and Development Program of Shaanxi Province, China (2011KJXX63), and the Fundamental Research Funds for the Central Universities, China (ZD2013021). The authors thank the Ansai Research Station of Soil and Water Conservation of the Chinese Academy of Sciences for conducting laboratory analysis of soil samples and for providing fieldwork support. Thanks are given to the two anonymous reviewers and editors of the journal for their valuable comments, suggestions, and revisions of this manuscript.

摘要/Abstract

摘要： The study was conducted in Zhifanggou Watershed, Shaanxi Province, China, to evaluate the effect of different vegetation types on hot-water extractable C, N and P fractions, with the aim to determine whether hot-water extractable fractions could be used as indicators of soil quality change in Loess Plateau. The six vegetation types established in 1975 were (i) Robinia pseudoacacia L., (ii) Caragana korshinkii Kom., (iii) Pinus tabulaeformis Carr., (iv) P. tabulaeformis-Amorpha fruticosa L., (v) R. pseudoacacia-A. fruticosa, and (vi) grassland. A cropped hillslope plot and a Platycladus orientalis L. native forest plot were used as references. The results indicated that the conversion of native forest to cropland resulted in a significant decline in the hot-water extractable C, N and P fractions. Hot-water extractable C, N, and P increased when cultivated land was revegetated, but after 30 years the amount of hot-water extractable C, N, and P in revegetated fields was still much lower compared to native forest. Hot-water extractable fractions increased more under mixed-forest than under pure-forest stands. Furthermore, there was a significant correlation between the hot-water extractable fractions and soil chemical and microbiological properties. The results showed that hot-water extractable fractions could be used as indicators of soil quality change on the Loess Plateau.

关键词: soil hot-water extractable fraction , vegetative restoration , Loess Plateau

Abstract: The study was conducted in Zhifanggou Watershed, Shaanxi Province, China, to evaluate the effect of different vegetation types on hot-water extractable C, N and P fractions, with the aim to determine whether hot-water extractable fractions could be used as indicators of soil quality change in Loess Plateau. The six vegetation types established in 1975 were (i) Robinia pseudoacacia L., (ii) Caragana korshinkii Kom., (iii) Pinus tabulaeformis Carr., (iv) P. tabulaeformis-Amorpha fruticosa L., (v) R. pseudoacacia-A. fruticosa, and (vi) grassland. A cropped hillslope plot and a Platycladus orientalis L. native forest plot were used as references. The results indicated that the conversion of native forest to cropland resulted in a significant decline in the hot-water extractable C, N and P fractions. Hot-water extractable C, N, and P increased when cultivated land was revegetated, but after 30 years the amount of hot-water extractable C, N, and P in revegetated fields was still much lower compared to native forest. Hot-water extractable fractions increased more under mixed-forest than under pure-forest stands. Furthermore, there was a significant correlation between the hot-water extractable fractions and soil chemical and microbiological properties. The results showed that hot-water extractable fractions could be used as indicators of soil quality change on the Loess Plateau.

Key words: soil hot-water extractable fraction , vegetative restoration , Loess Plateau

XUE Sha, LI Peng, LIU Guo-bin, LI Zhan-bin, ZHANG Chao. Changes in Soil Hot-Water Extractable C, N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau[J]. Journal of Integrative Agriculture, 2013, 12(12): 2250-2259.

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Changes in Soil Hot-Water Extractable C, N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

Changes in Soil Hot-Water Extractable C, N and P Fractions During Vegetative Restoration in Zhifanggou Watershed on the Loess Plateau

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