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Rational land-use types in the karst regions of China: Insights from soil organic matter composition and stability
Chang, Jingjing1; Zhu, Jianxing1,2; Xu, Li1,2; Su, Hongxin3; Gao, Yang1,2; Cai, Xianli4; Peng, Tao4; Wen, Xuefa1,2; Zhang, Jinjing; He, Nianpeng1,2
2018
发表期刊CATENA
ISSN0341-8162
卷号160页码:345-353
摘要Composition and stability of soil organic matter (SOM) affect the sustenance and productivity of soil over the long-term. This issue is particularly important for karst regions in China where the water supply and fertilizer use are limiting factors. Here, we used four indicators to evaluate changes in the composition and stability of SOM quantitatively in five main land-use types in karst area, including primary forest [PF], 15-year secondary forest [SF], grazing secondary forest [GF], abandoned farmland [AF] and farmland [FL]. We collected soil samples at a depth of 0-20 cm to conduct the analyses. Four indicators were used: soil physical and chemical properties, active organic carbon (C), humus C composition, and SOM functional groups. Our results showed that the content of SOM, total nitrogen, and easily oxidized organic C at 0-20 cm soil depth differed among the five land use types (P < 0.05). For humic acid C concentration, the land-use types were ordered as: SF > PF > GF > FL > AF. Solid-state C-13 NMR spectra showed that the highest ratio of Alkyl C/O-alkyl C was in AF, while the lowest was in SF. Overall, the comprehensive quality of SOM in different land-use types was PF (setting 100%) > SF (83.1%) > GF (58%) > AF (30.9%) > FL (29.9%). For karst areas, we suggest that farmlands in sloping area should be converted back to forests, with only moderate grazing being permitted, whereas farmlands in the plains should implement grain-forage rotation and grain-soybean rotation to meet the needs of the growing population and economic development. In conclusion, our findings provide a scientific basis from which to delineate rational land-use types for different land (geographical and geological) formations.
关键词C-13 NMR Humic acid Soil organic carbon Functional groups Soil nutrient
学科领域Geosciences, Multidisciplinary ; Soil Science ; Water Resources
DOI10.1016/j.catena.2017.09.029
收录类别SCI
语种英语
WOS关键词C-13 NMR-SPECTROSCOPY ; LONG-TERM IMPACT ; SEQUESTRATION RATES ; CARBON FRACTIONS ; MANAGEMENT ; FOREST ; QUALITY ; VEGETATION ; SUCCESSION ; ROTATION
WOS记录号WOS:000414880400035
出版者ELSEVIER
文献子类Article
出版地AMSTERDAM
EISSN1872-6887
资助机构Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41571130043, 31570471] ; National Key R AMP ; D Program of China [2016YFC0500202] ; Youth Innovation Promotion Association CAS
作者邮箱zhangjinjing@126.com ; henp@igsnrr.ac.cn
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/20559
专题植被与环境变化国家重点实验室
作者单位1.Jilin Agr Univ, Coll Resources & Environm, Changchun 130118, Jilin, Peoples R China
2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
5.Chinese Acad Sci, Puding Karst Ecosyst Res Stn, Anshun 562100, Peoples R China
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Chang, Jingjing,Zhu, Jianxing,Xu, Li,et al. Rational land-use types in the karst regions of China: Insights from soil organic matter composition and stability[J]. CATENA,2018,160:345-353.
APA Chang, Jingjing.,Zhu, Jianxing.,Xu, Li.,Su, Hongxin.,Gao, Yang.,...&He, Nianpeng.(2018).Rational land-use types in the karst regions of China: Insights from soil organic matter composition and stability.CATENA,160,345-353.
MLA Chang, Jingjing,et al."Rational land-use types in the karst regions of China: Insights from soil organic matter composition and stability".CATENA 160(2018):345-353.
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