PAN Xue-qin,LIU Zhan-ren,MENG Xiao-yun,et al.Analysis on Features of Soil Erosion with Different Land Uses in the Yunmeng Lake Watershed[J].Research of Soil and Water Conservation,2012,19(04):6-9.
云蒙湖流域不同土地利用类型的土壤侵蚀特征分析
- Title:
- Analysis on Features of Soil Erosion with Different Land Uses in the Yunmeng Lake Watershed
- Keywords:
- land use; soil erosion; Yunmeng Lake watershed
- 分类号:
- S157
- 摘要:
- 在RS与GIS支持下，获取云蒙湖流域土地利用空间数据，选用RUSLE模型估算土壤侵蚀量，对云蒙湖流域不同土地利用类型的土壤侵蚀特征进行分析。结果表明：1986—2010年间，土壤年总侵蚀量由647万t降至630万t，水土保持生态恢复工程取得了一定的成效；云蒙湖流域耕地土壤侵蚀最为严重，1986年和2010年土壤侵蚀模数高达5325 t/（km2·a）和5504 t/（km2·a），分别占土壤侵蚀总量的85.8%和84.7%；草地是重点治理的另一对象，强度以上等级侵蚀都分别占总侵蚀面积的40%和44%；随着耕地和草地类型的转入，居民用地侵蚀面积由1986年的1010 hm2增至2010年的2608 hm2，土壤侵蚀总量由5.4万t增至14.2万t，是变化较为明显的土地利用类型。
- Abstract:
- The effects of land use structure on soil loss are very important for territory protection. In order to investigate the influence of land uses on soil erosion over the watershed, RS and GIS techniques were utilized and RUSLE model were selected to acquire the spatial data of the land uses and the soil erosion of the Yunmeng Lake watershed. The results showed that during the period of 1986-2010, soil erosion situation had improved with the soil and water conservation and ecological restoration project, but the soil erosion was still serious with the total annual erosion amounting to 6.3 million tons from 6.47 million tons. In all types of land uses, farmland showed the most serious erosion with high soil erosion modulus 5325 t/(km2·a) and 5504 t/(km2·a), respectively, accounting for 85.8% and 84.7% of total soil erosion. Additionally, the grassland was another main object to be protected with the total proportion of strong, extremely strong and severe erosion zones of 40% and 44%, respectively. As farmland and grassland types in turn, the erosion area of residential land increased from 1010 hm2 to 2608 hm2, and soil erosion amount increased from 54000 t to 142000 t.
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备注/Memo
收稿日期:2011-12-13;修回日期:2012-2-9
基金项目:山东省科技攻关项目（2009GG10006015，2011GGH21704）；临沂市重大科技创新项目（201011019）
作者简介:泮雪芹（1977- ），女，山东烟台人，硕士，讲师，主要从事资源环境遥感应用研究。E-mail：panxueqin165@sina.com。
通讯作者:刘占仁（1967- ），男，山东乳山人，副教授，主要从事资源利用研究。E-mail：liuzhanren@lyu.edu.cn。