干旱区研究

干旱区研究 ›› 2015, Vol. 32 ›› Issue (2): 221-228.doi: 10.13866/j.azr.2015.02.02

• 水土资源 • 上一篇    下一篇

不同土地利用方式对风沙土酶活性的影响

黄静1, 吴祥云2, 单宝奇1, 王美婷1   

  1. 1.辽宁工程技术大学理学院,辽宁 阜新 123000;
    2.辽宁工程技术大学环境科学与工程学院,辽宁 阜新 123000
  • 收稿日期:2013-07-23 修回日期:2013-10-14 出版日期:2015-03-15 发布日期:2015-04-16
  • 作者简介:黄静(1978-),女,博士,主要从事水土保持与恢复生态学领域的研究.E-mail: 15918893@qq.com
  • 基金资助:
    水体污染控制与治理科技重大专项课题(2012ZX0720202008-001)

Effects of Different Land Use Patterns on Enzyme Activity of Aeolian Sandy Soil

HUANG Jing1, WU Xiang-yun2, SHAN Bao-qi1, WANG Mei-ting1   

  1. 1. College of Science, Liaoning Technical University, Fuxin 123000, Liaoning, China;
    2. College of Environment Science and Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China
  • Received:2013-07-23 Revised:2013-10-14 Published:2015-03-15 Online:2015-04-16

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摘要： 以辽宁省彰武县柳河流域忙海林子村为例,研究了不同土地利用方式对该区域风沙土6种酶活性的影响。结果表明:裸地由于几乎无植被覆盖,各类生物少,酶活性普遍处于最低水平,应采取措施改良;河滩地由于其特殊的地理位置,土壤易被河水冲刷,酶活性普遍处于较低水平,且由于耕种会影响泄洪,因此,河滩地不适合开垦为耕地;非河滩耕地酶活性基本处于中等水平,说明由于耕作、收割等,加剧了水土流失过程,降低了酶活性,可适度休耕;天然草地酶活性基本处于较高水平,说明天然草地可在一定程度上改善风沙土酶活性;林地酶活性普遍处于最高水平,说明种植杨树对改善风沙土酶活性效果最为明显。

关键词: 土地利用, 风沙土, 土壤酶活性, 辽宁

Abstract: Taking Manghailinzi village of Liuhe basin in the Zhangwu county, Liaoning Province as an example, the effects of different land use patterns on the six kinds of enzyme activities of aeolian sandy soil of the area were studied. The results showed that enzyme activity was at the lowest level because of sparse vegetation and few creatures in bare land. Enzyme activity of flood land was also at the lowest level because of the special geographical location of flood land where the soil was easily washed by river water. The flood land is not suitable for reclamation of cultivated land because farming would affect the releasing of flood water. Enzyme activity of farmland in non-flood land was in the middle level because cultivation and harvesting exacerbated soil erosion process and reduced the enzyme activity. The land was suggested to lie fallow. Enzyme activity of natural grassland was at the higher level, which illustrated natural grassland can improve the aeolian sandy soil enzyme activity to a certain extent. Due to soil surface litter and humus accumulation, adequate nutrition and better hydrothermal conditions, the enzyme activity in forest land was at the highest level. Therefore, the effect of improving sandy soil enzyme activity was the most obvious through planting poplar.

Key words: land use patterns, aeolian sandy soil, enzyme activity of soil, Liaoning