[1]周玮莹,杨明义.黄土高原坝控小流域土壤C,N,P计量特征解析[J].水土保持研究,2018,25(03):17-22,28.
　ZHOU Weiying,YANG Mingyi.Analysis on Stoichiometry Characteristics of Soil Carbon, Nitrogen and Phosphorus in Small Watershed of the Loss Plateau[J].Research of Soil and Water Conservation,2018,25(03):17-22,28.
点击复制

黄土高原坝控小流域土壤C,N,P计量特征解析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 25 期数: 2018年03期 页码: 17-22,28 栏目: 出版日期: 2018-04-10
Title:
Analysis on Stoichiometry Characteristics of Soil Carbon, Nitrogen and Phosphorus in Small Watershed of the Loss Plateau
作者:
周玮莹1,2, 杨明义1,2
1. 西北农林科技大学 水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100;
2. 中国科学院 水利部 水土保持研究所, 陕西 杨凌 712100
Author(s):
ZHOU Weiying1,2, YANG Mingyi1,2
1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
化学计量特征; C:P; 沉积泥沙; 降雨侵蚀力
Keywords:
stoichiometry characteristic; C:P; sediment; rainfall erosivity
分类号:
S153.6
摘要:
研究采集了陕西绥德王茂庄流域埝堰沟流域内沟壁裸露地、荒草地及耕地3种利用类型的土壤及坝地沉积泥沙，分析了小流域土壤及沉积泥沙中的碳（C）、氮（N）、磷（P）的化学计量特征，结合泥沙量与降雨侵蚀力的阶段性变化，对流域侵蚀环境进行反演。结果表明：（1） 坝控流域内土壤C，N，P含量均值分别为3.36 g/kg，0.35 g/kg，0.68 g/kg，C：N，C：P，N：P均值分别是9.30，5.75，0.60，低于全国平均水平；坝地泥沙的C，N，P含量均值分别为1.76 g/kg，0.20 g/kg，0.55 g/kg，坝地养分未表现出富集效应，研究区土壤的C：N，C：P，N：P比值反映出土壤矿化速度较快但氮素缺乏，限制植物生长；（2） C：P在不同土地利用类型土壤间、土壤与沉积泥沙中均有显著差异，因此可作为泥沙对土地利用类型变化响应的敏感指标；（3） 根据泥沙量的累积距平趋势变化曲线可以将流域侵蚀历史划分为4个阶段，结合降雨侵蚀力及C：P值与泥沙量的回归关系，分析了不同阶段降雨和土地利用变化对侵蚀泥沙的贡献。
Abstract:
The check dam sediment and soils in three types of land-use of Wangmaogou Watershed in Suide County of Shaanxi Province were collected. To reproduce the change of erosion environment in small watershed, based on periodic change of sediment yield and rainfall erosivity, carbon(C), nitrogen(N) and phosphorus(P) stoichiometry of soil in small watershed and check dam sediment were analyzed. The results indicated that:(1) the mean contents of soil carbon, nitrogen and phosphorus were 3.36 g/kg, 0.35 g/kg, 0.68 g/kg, the mean values of C:N, C:P, N:P were 9.30, 5.75, 0.60, lower than average of those of China soils; The mean contents of sediment carbon, nitrogen and phosphorus were 1.76 g/kg, 0.20 g/kg, 0.55 g/kg; soil C:N, C:P, N:P of the study area reflected the fast soil mineralization but lack of nitrogen, which limited the growth of plants; (2) C:P ratios among different land-used types, soil and sediment presented significant differences, which means of C:P can be used as the sensitive index indicating the response of sediment to land use types; (3) according to sediment yield, rainfall erosivity and C:P value accumulation curve, erosion can be divided into four phases, and on the basis of the relationship between rainfall erosivity and sediment yield, the contributions of the different stages of rainfall and land use change to erosion and sediment can be determined.

参考文献/References:

[1] 曾德慧,陈广生.生态化学计量学:复杂生命系统奥秘的探索[J].植物生态学报,2005,29(6):141-153.
[2] 王绍强,于贵瑞.生态系统碳氮磷元素的生态化学计量学特征[J].生态学报,2008,28(8):3937-3947.
[3] Wardle D A, Walker L R, Bardgett R D. Ecosystem properties and forest decline in contrasting long-term chronosequences.[J]. Science, 2004,305(5683):509-513.
[4] 朱秋莲,邢肖毅,张宏,等.黄土丘陵沟壑区不同植被区土壤生态化学计量特征[J].生态学报,2013,33(15):4674-4682.
[5] 张向茹,马露莎,陈亚南,等.黄土高原不同纬度下刺槐林土壤生态化学计量学特征研究[J].土壤学报,2013,50(4):818-825.
[6] 李婷,邓强,袁志友,等.黄土高原纬度梯度上的植物与土壤碳、氮、磷化学计量学特征[J].环境科学,2015,36(8):2988-2996.
[7] 曾全超,李鑫,董扬红,等.陕北黄土高原土壤性质及其生态化学计量的纬度变化特征[J].自然资源学报,2015,30(5):870-879.
[8] 徐明,张健,刘国彬,等.黄土丘陵区不同植被恢复模式对沟谷地土壤碳氮磷元素的影响[J].草地学报,2015,23(1):62-68.
[9] 李丹维,王紫泉,田海霞,等.太白山不同海拔土壤碳、氮、磷含量及生态化学计量特征[J].土壤学报,2017,54(1):160-170.
[10] 李勉,姚文艺,史学建.淤地坝拦沙减蚀作用与泥沙沉积特征研究[J].水土保持研究,2005,12(5):111-115.
[11] 李勉,杨剑锋,侯建才,等.黄土丘陵区小流域淤地坝记录的泥沙沉积过程研究[J].农业工程学报,2008,24(2):64-69.
[12] 文安邦,张信宝,沃林de.黄土丘陵区小流域泥沙来源及其动态变化的137Cs法研究[J].地理学报,1998,53(S1):124-133.
[13] Zhao G, Klik A, Mu X, et al. Sediment yield estimation in a small watershed on the northern Loess Plateau, China[J]. Geomorphology, 2015,241:343-352.
[14] Zhang X, Walling D E, He X, et al. Use of landslide-dammed l0061ke deposits and pollen tracing techniques to investigate the erosional response of a small drainage basin in the Loess Plateau, China, to land use change during the late 16th century[J]. Catena, 2009,79(3):205-213.
[15] 杨明义,徐龙江.黄土高原小流域泥沙来源的复合指纹识别法分析[J].水土保持学报,2010,24(2):30-34.
[16] 薛凯,杨明义,张风宝,等.利用淤地坝泥沙沉积旋回反演小流域侵蚀历史[J].核农学报,2011,25(1):115-120.
[17] 章文波,谢云,刘宝元.用雨量和雨强计算次降雨侵蚀力[J].地理研究,2002,21(3):384-390.
[18] 霍洛特,谭锦维.农业生产效果预测[M].北京:农业出版社,1983.
[19] 邬畏,何兴东,周启星.生态系统氮磷比化学计量特征研究进展[J].中国沙漠,2010,30(2):296-302.
[20] Tian H, Chen G, Zhang C, et al. Pattern and variation of C:N:P ratios in China’s soils:a synthesis of observational data[J]. Biogeochemistry, 2010,98(1/3):139-151.
[21] Kaushal S, Binford M W. Relationship between C:N ratios of lake sediments, organic matter sources, and historical deforestation in Lake Pleasant, Massachusetts, USA[J]. Journal of Paleolimnology, 1999,22(4):439-442.
[22] Brenner M, Binford M W. A sedimentary record of human disturbance from Lake Miragoane, Haiti[J]. Journal of Paleolimnology, 1988,1(2):85-97.
[23] Melenevskii V N, Leonova G A, Konyshev A S. The organic matter of the recent sediments of Lake Beloe, West Siberia(from data of pyrolytic studies)[J]. Russian Geology & Geophysics, 2011,52(6):583-592.

相似文献/References:

[1]张欣影,宁秋蕊,李守中,等.亚热带红壤侵蚀区马尾松针叶生态化学计量特征[J].水土保持研究,2017,24(02):156.
　ZHANG Xinying,NING Qiurui,LI Shouzhong,et al.Stoichiometric Characteristics of Pinus massoniana Plantation in the Subtropical Red Soil Erosion Region[J].Research of Soil and Water Conservation,2017,24(03):156.

备注/Memo

收稿日期:2017-12-25;改回日期:2018-01-20。
基金项目:国家自然科学基金“淤地坝赋存信息解译黄土高原小流域土壤侵蚀特征演变及驱动机制”（41671281）
作者简介:周玮莹(1992-),女,广西北海人,硕士研究生,主要从事土壤侵蚀方面研究。E-mail:wyzhou92@163.com
通讯作者:杨明义(1970-),男,山东莱州人,博士,研究员,主要从事土壤侵蚀核示踪研究。E-mail:ymyzly@163.com

更新日期/Last Update: 1900-01-01