摘要
选择了青海湖防沙治沙措施区,通过野外调查、采样和室内实验分析,对该措施区及流动沙区的土壤微生物数量及垂直分布特征进行研究。结果表明:(1)微生物总数量为沙岛半固定沙丘>克土丘间地>克土灌丛>沙岛灌丛>湖东种羊场草方格区>流动沙丘>克土沙棘草方格>克土青杨草方格>示范区近年设置的草方格区。(2)早期治理区,植被覆盖较高,微生物数量垂直分布表现为上层的高于下层,微生物含量也较其他点高。(3)流动沙丘及草方格治理的沙丘,微生物数量非常少,而且下层的稍高于上层,这是因为流动沙丘下层土壤水分状况较好。
The desertification combating areas around Qinghai Lake were selected in the study. The number and characteristics of soil microbe were examined through field survey and sampling and laboratory test. （1） The areas, in order of decreasing soil microbe gross, were semi-fixed dune in sand island, the lowland between sandy dunes in Ketu, shrubs in Ketu, shrubs in sand island, straw checkerboard barriers zone in Hudong sheep stud, mobile dune, straw checkerboard barriers zone planted with Hippophae thibetana Schlechtend. in Ketu, straw checkerboard barriers zone planted with Populus cathayana Rehd. in Ketu and straw checkerboard barriers zone recently set in the demonstration area. （2） In early combating areas, the vegetable coverage was high, the vertical distribution of soil microbe showed that the amount in topsoil（0- 10 cm） was much more than subsoil layer（10--30 cm）, and the content of soil microbe was richer than other sample plots. （3） In the mobile dunes and straw checkerboard barriers combating areas, soil microbe was very few, and its number in lower layer was a little higher than the upper layer, due to the better situation of soil water content in the lower layer of mobile dunes.
出处
《水土保持通报》
CSCD
北大核心
2014年第1期104-108,共5页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金项目“宁夏河东沙区沙漠化治理生态效益观测与评估”(41201087)
国家科技支撑项目“青海湖流域生态和环境综合整治模式及技术集成”(2007BAC30B05-01)
关键词
土壤微生物
青海湖
防沙治沙
soil microbe
Qinghai Lake
desertification combating
