The spatial distribution of soil organic carbon in the main producing areas of traditional Chinese medicine in Longxi, Gansu, China
Received date: 2020-04-22
Revised date: 2020-08-24
Online published: 2020-12-09
In August 2018, 200 samples were surveyed in Longxi County. Using correlation analysis, analysis of variance, principal component analysis, and geostatistical analysis, we analyze sampling point data explored the spatial distribution characteristics of soil organic carbon density and reserves in Longxi County, and the relationship with climate, topography, and land use. The results showed that: (1) the total amount of organic carbon in soil from 0 to 50 cm was 6.29±2.41 Tg, and the SOCD was 2.67±1.02 kg·m-2. The SOCD in the 0-10 cm, 10-30 cm soil layers and 30-50 cm were 0.63±0.17, 1.10±0.38 and 0.93±0.48 kg·m-2, the organic carbon storagewere 1.49±0.41, 2.58±0.90 and 2.21±1.11 Tg, respectively. (2) Significant correlatios were observed between temperature, precipitation, elevation and Stream Power Index with SOCD in each soil layer. With the increase of soil depth, the correlations between slope, topographic relief and surface roughness with SOCD were gradually decreased, and no significant correlation was found in 30-50 cm soil layer. The correlation between topographic wetness index and SOCD was gradually increased and showed a significant negative correlation 30-50 cm soil layer. (3) The spatial distribution of SOCD as follows: the SOCD ratchet up from the central plains of the Wei River to the northern foothills and southern mountain areas with the rising of altitude. SOCD of Northern Mountain was higher than that of the Southern Mountain. The river valley plain formed by Wei River Basin has a lower organic carbon density. The distribution of soil organic carbon density in different soil layers and grades was markedly different. Due to the influence of human activities, the SOCD of the townships with large per capita cultivated land area was relatively low; the SOCD of the towns with large planted area of cash crops was relatively high; and SOCD of the towns with large per-mu investment in Chinese medicinal planting areas was relatively high. The SOCD was lower in the towns with larger arable land area per capita, higher in the towns where the planting area of cash crops was larger, higher in the towns with higher input per mu.
Liang Tang , Mingzhu He , Guangzu Bai , Pengshan Zhao , Jianxin Ren , Hua Xu . The spatial distribution of soil organic carbon in the main producing areas of traditional Chinese medicine in Longxi, Gansu, China[J]. Journal of Desert Research, 2020 , 40(6) : 212 -222 . DOI: 10.7522/j.issn.1000-694X.2020.00081
1 | 安玲玲,吕晓男,麻万诸,等.浙江省土壤有机碳密度与储量的初步研究[J].浙江农业学报,2014,26(1):148-153. |
2 | Tiessen H,Cuevas E,Chacon P.The role of soil organic matter in sustaining soil fertility[J].Nature,1994,371:783-785. |
3 | Loveland P,Webb J.Is there a critical level of organic matter in the agricultural soils of temperate regions: a review[J].Soil & Tillage Research,2003,70(1):1-18. |
4 | 王绍强,周成虎,李克让,等.中国土壤有机碳库及空间分布特征分析[J].地理学报,2000,55(5):533-544. |
5 | Huang Y,Sun W J.Changes in topsoil organic carbon of croplands in mainland China over the last two decades[J].Chinese Science Bulletin,2006,51(15):1785-1803. |
6 | 陇西县志编纂委员会.陇西县志[M].兰州:甘肃人民出版社,1990. |
7 | 陈可.基于复杂环境区域的土壤有机质空间预测研究[D].武汉:华中农业大学,2018. |
8 | 解宪丽,孙波,周慧珍,等.中国土壤有机碳密度和储量的估算与空间分布分析[J].土壤学报,2004,41(1):35-43. |
9 | 刘文辉,李春亮,吴永强.甘肃省兰州-白银地区土壤有机碳库储量估算与空间分布特征[J].物探与化探,2012,36(3):367-371. |
10 | 刘文辉.甘肃省张掖-永昌地区土壤有机碳密度估算及其空间分布特征[J].物探与化探,2013,37(3): 552-556. |
11 | 陈曦.广西土壤有机碳储量估算及与全国部分省区的比较研究[J].地理科学,2014,34(10):1247-1253. |
12 | 钟聪,杨忠芳,夏学齐,等.青海省土壤有机碳储量估算及其源汇因素分析[J].现代地质,2012,26(5):896-909. |
13 | 傅野思,夏学齐,杨忠芳,等.内蒙古自治区土壤有机碳库储量及分布特征[J].现代地质,2012,26(5):886-895. |
14 | 代杰瑞,庞绪贵,曾宪东,等.山东省土壤有机碳密度的空间分布特征及其影响因素[J].环境科学研究,2015,28(9):1449-1458. |
15 | 袁芳,赵小敏,乐丽红,等.江西省表层土壤有机碳库储量估算与空间分布特征[J].生态环境,2008,17(1):268-272. |
16 | 于沙沙,窦森,黄健,等.吉林省耕层土壤有机碳储量及影响因素[J].农业环境科学学报,2014,33(10):1973-1980. |
17 | 张圣民.黄土高原农田土壤有机碳储量及固碳能力研究[D].陕西杨凌:西北农林科技大学,2018. |
18 | 孙忠祥,李勇,赵云泽,等.旱作区土壤有机碳密度空间分布特征与其驱动力分析[J].农业机械学报,2019,50(1):255-262. |
19 | 江叶枫,饶磊,郭熙,等.江西省耕地土壤有机碳空间变异的主控因素研究[J].土壤,2018,50(4):778-786. |
20 | 解文艳,周怀平,杨振兴,等.黄土高原东部潇河流域农田土壤有机质时空变异及影响因素[J].农业资源与环境学报,2019,36(1):96-104. |
21 | 钟聪,杨忠芳,胡宝清,等.河北平原区土壤有机碳及其对气候变化的响应[J].农业现代化研究,2016,37(4):809-816. |
22 | 张城,王绍强,于贵瑞,等.中国东部地区典型森林类型土壤有机碳储量分析[J].资源科学,2006,28(2):97-103. |
23 | 曾希柏.耕地质量培育技术与模式[C].北京:中国农业出版社,2014. |
24 | 刘书田.中国农田土壤有机碳时空分布规律及影响因素研究[D].长春:吉林农业大学,2016. |
25 | Silver W L,Lugo A E,Keller M.Soil oxygen availability and biogeochemistry along rainfall and topographic gradients in upland wet tropical forest soils[J].Biogeochemistry,1999,44(3):301-328. |
26 | 林维,崔晓阳.地形因子对大兴安岭北端寒温带针叶林土壤有机碳储量的影响[J].森林工程,2017,33(3):1-6. |
27 | 赵西宁,吴发启,王万忠.黄土高原沟壑区坡耕地土壤入渗规律研究[J].干旱区资源与环境,2004,18(4):109-112. |
28 | 牛伊宁,南志标,沈禹颖.陇东黄土高原地表粗糙度对耕作土壤径流的影响[J].干旱区研究,2011,28(3):389-393. |
29 | 肖林林.山地丘陵区耕地土壤有机碳密度空间变异特征分析及预测[D].重庆:西南大学,2013. |
30 | 丛山.温度和水分对吉林省主要耕作土壤有机质矿化影响的模拟研究[D].长春:吉林农业大学,2016. |
31 | 郭晓伟,骆土寿,李意德,等.尖峰岭热带山地雨林土壤有机碳密度空间分布特征[J].生态学报,2015,35(23):7878-7886. |
32 | 李斌,方晰,李岩,等.湖南省森林土壤有机碳密度及碳库储量动态[J].生态学报,2015,35(13):4265-4278. |
33 | 王鹏程,邢乐杰,肖文发,等.三峡库区森林生态系统有机碳密度及碳储量[J].生态学报,2009,29(1):97-107. |
34 | 于建军,杨锋,吴克宁,等.河南省土壤有机碳储量及空间分布[J].应用生态学报,2008,19(5):1058-1063. |
35 | Yang W Q,Deng R J,Zhang J.Forest litter decomposition and its responses to global climate change[J].The Journal of Applied Ecology,2007,18(12): 2889-2895. |
36 | Usman S,Singh S P,Rawat Y S,et al.Fine root decomposition and nitrogen mineralisation patterns in Quercus leucotrichophora and Pinus roxburghii forests in central Himalaya[J].Forest Ecology and Management,2000,131(1/2/3):191-199. |
37 | 高石曼,刘久石,孙恬,等.不同栽培措施对党参药材化学质量的影响[J].中国中药杂志,2016,41(20):3753-3760. |
38 | 张琳,王晓,史国玉,等.中药连作障碍形成及其时空效应理论探讨[J].现代中药研究与实践,2014,28(5):78-83. |
39 | 龚成文,赵欣楠,冯守疆,等.配方施肥对党参生产特性的影响[J].西北农业学报,2013,22(11):130-136. |
40 | 李振方,杨燕秋,谢冬凤,等.连作条件下地黄药用品质及土壤微生态特性分析[J].中国生态农业学报,2012,20(2):217-224. |
/
〈 |
|
〉 |