CHAI Chengwu,WANG Lide,YU Qiushi,et al.Change Characteristics of Soil Particle Composition and Nutrient of Abandoned Farmland in Different Years in Qingtu Lake Area in Minqin[J].Research of Soil and Water Conservation,2020,27(04):99-104.
民勤青土湖区不同年限退耕地土壤颗粒组成和养分变化特征
- Title:
- Change Characteristics of Soil Particle Composition and Nutrient of Abandoned Farmland in Different Years in Qingtu Lake Area in Minqin
- 文章编号:
- 1005-3409(2020)04-0099-06
- 分类号:
- Q948
- 文献标志码:
- A
- 摘要:
- 以石羊河下游民勤青土湖区不同年限退耕地典型样地为研究对象,通过时空替代法分析该区不同年限退耕地土壤颗粒组成与养分变化特征。结果表明:(1)不同年限退耕地上土壤颗粒组成含量总体砂粒>粉粒>黏粒>粗砂粒,其中,黏粒结构在CK及退耕后4 a间,0—20 cm,20—40 cm土层之间含量间存在显著差异,之后其在土壤中的含量随退耕年限增加而趋于稳定,且两土层间差异不显著; 粉粒和砂粒结构含量在CK及退耕后2 a变化较为剧烈,且同一年限内0—20 cm,20—40 cm两土层间存在显著差异,之后也随退耕年限的增加两土层及各退耕年限间均差异不显著,逐渐趋于稳定状态; 而粗砂粒仅在CK及退耕后2 a含量较为稳定,之后退耕4～40 a间含量变化较大,存在不稳定性,且同一年限两土层间存在显著差异。(2)三种土壤养分的总体变化趋势均表现为随退耕年限增加而减小并最终趋于稳定,在同一年限内均表现为0—20 cm土层中的含量大于20—40 cm,且同一年限内两层间的含量差异均随退耕年限增加而逐渐减小,以土壤有机质和速效磷表现较为明显; 其中土壤有机质含量在CK～退耕8 a间变化幅度较大,且在此期间退耕第4年时有一个剧烈上升的拐点,13～40 a间变化幅度较小; 全氮含量在三种土壤养分中变化最为稳定,且在整个退耕时间内变化幅度较小; 土壤速效磷含量CK含量最大,尤其在土壤表层0—20 cm最为明显,之后表现为随退耕年限增加而波动式下降的趋势,并趋于稳定。
- Abstract:
- Studied the characteristics of soil particle composition and nutrient of abandoned farmland as the research object of the typical district in different years in Qingtu Lake area in Minqin by the spatio-temporal substitution method. The results show that:(1)the total soil particle composition in different years was sand>silt>clay>coarse sand. And there were significant differences in the content of clay between CK and the soil layer of 0—20 cm and 20—40 cm. But the content of clay in the soil tended to be stable with the increase of the year, and there was no significant difference between the two soil layers. The structural content of silt and sand changed sharply in CK and 2 years later, and there were significant differences between 0—20 cm and 20—40 cm soil layers in the same year, and then the differences between the two soil layers and the years of conversion were not significant with the increase of the years of conversion, gradually becoming stable. The content of coarse sand is relatively stable only in CK and 2 years later, but which changes greatly in 4—40 years after conversion, there is instability in the same year, and significant differences shows among soil layers.(2)The overall change trend of the three soil nutrients decreased with the increase of the years of abandoned farmland, and finally became stable. In the same years, the content of soil nutrients in 0—20 cm soil layer was more than in 20—40 cm, and the content difference between the two layers decreased with the increase of the years of abandoned farmland, especially the content of soil organic matter and available phosphorus are obvious. The content of soil organic matter changed greatly in the period of CK～8 years, and there was a sharp turning point in the period of 4 years later, and the change range was small in the period of 13～40 years. The content of total nitrogen was the most stable in the three kinds of soil nutrients, and the change range was small in the whole time. The content of soil available phosphorus was the largest in CK, especially in the 0—20 cm of soil surface layer is the most obvious, and then it shows a trend of fluctuating decline with the increase of the years of abandoned land, and tends to be stable.
参考文献/References:
[1] 冯绳武.民勤绿洲水系演变[J].地理学报,1963,29(3):241-249.
[2] 王世金,何元庆,赵成章.西北内陆河流域水资源优化配置与可持续利用[J].水土保持研究,2008,15(5):22-29.
[3] 李丁,马金珠,南忠仁.民勤盆地地下水位下降特征与可持续利用评价[J].中国沙漠,2004,21(6):734-739.
[4] 赵燕娜,廖超英,李晓明.毛乌素沙地4种固沙植物根际与非根际土壤生物学特性[J].干旱区研究,2015,32(4):680-686.
[5] 王理德,姚拓,何芳兰,等.石羊河下游退耕区次生草地自然恢复过程及土壤酶活性的变化[J].草业学报,2014,23(4):253-261.
[6] 赛胜宝.内蒙古北部荒漠草原带的严重荒漠化及其治理[J].干旱区资源与环境,2001,15(4):34-37.
[7] 吕桂芬,吴永胜,李浩,等.荒漠草原不同退化阶段土壤微生物、土壤养分及酶活性的研究[J].中国沙漠,2010,30(1):104-109.
[8] 杨培岭,罗远培,石元春.用粒径的重量分布表征的土壤分形特征[J].科学通报,1993,38(20):1896-1899.
[9] 肖烨,黄志刚,武海涛,等.三江平原典型湿地类型土壤微生物特征与土壤养分的研究[J].环境科学,2015,36(5):1842-1848.
[10] 吴景贵.土壤颗粒的功能研究进展[J].吉林农业大学学报,2008,30(4):529-537.
[11] Niu J, Rang Z, Zhang C. The succession pattern of soil microbial communities and its relationship with tobacco bacterial wilt[J]. Bmc Micro-Biol, 2016,16(8):233-242.
[12] 陈小红,段争虎,谭明亮,等.沙漠化逆转过程中土壤颗粒分布及其养分含量的变化特征:以宁夏盐池县为例[J].土壤通报,2010,41(6):1412-1417.
[13] 焦峰,温仲明,焦菊英,等.黄丘区退耕地植被与土壤水分养分的互动效[J].草业学报,2006,15(2):79-84.
[14] 高雪峰.短花针茅荒漠草原土壤微生物群落组成及结构[J].生态学报,2017,37(15):5129-5136.
[15] 马祥华,焦菊英.黄土丘陵沟壑区退耕地自然恢复植被特征及其与土壤环境的关系[J].中国水土保持科学,2005,3(2):15-22.
[16] 杨万勤.土壤生态退化与生物修复的生态适应性研究[D].重庆:西南农业大学,2001.
[17] 郭胜利,刘文兆,史竹叶,等.半干旱区流域土壤养分分布特征及其与地形、植被的关系[J].干旱地区农业研究,2003,21(4):40-43.
[18] 鲍士旦.土壤农化分析[M].北京:中国农业出版社,1999.
[19] Yang Y, Liu B R. Distribution of soil nutrient and microbial biomass in rhizosphere versus non-rhizosphere area of different plant species in desertified steppe[J]. Acta Ecologica Sinica, 2015,35(22):7562-7570.
[20] 罗旦,陈吉祥,程琳,等.陕北沙化区3种主要植物根际土壤细菌多样性与土壤理化性质相关性分析[J].干旱区资源与环境,2019,33(3):151-157.
[21] 白雪爽,胡亚林,曾德慧,等.半干旱沙区退耕还林对碳储量和分配格局的影响[J].生态学杂志,2008,27(10):1647-1652.
[22] 郑秋红,张宏,贾海坤,等.怀来盆地弃耕地自然恢复过程中土壤养分动态[J].生态与农村环境学报,2006,22(1):24-28.
相似文献/References:
[1]柴成武,王理德,尉秋实,等.民勤青土湖区不同年限退耕地土壤水分和养分变化[J].水土保持研究,2020,27(05):101.
CHAI Chengwu,WANG Lide,WEI Qiushi,et al.Soil Moisture and Nutrient Changes in Different Years of Abandoned Farmlands in Qingtu District[J].Research of Soil and Water Conservation,2020,27(04):101.
备注/Memo
收稿日期:2019-11-27 修回日期:2019-12-28
资助项目:国家自然科学基金项目(31760709,41761051); 甘肃省科技计划项目(2017kj025,2017kj024); 中央财政林业科技推广示范项目([2017]ZYTG14); 甘肃省青年科技基金项目(18JR3RA019)
第一作者:柴成武(1980—),男,甘肃会宁人,副研究员,主要从事水土保持与荒漠化防治研究。E-mail:chaichw@163. com
通信作者:王方琳(1985—),女,甘肃天水人,副研究员,主要从事植物生理生态和荒漠化防治研究。E-mail:wangfanglin2008@163.com