| Nutrient Loss from Various Land－Use Areas in Shixia Small Watershed of Miyun County,Beijing China |
| |
| 引用本文： | 王晓燕,王晓峰,王振刚,汪青平,蔡新广.Nutrient Loss from Various Land－Use Areas in Shixia Small Watershed of Miyun County,Beijing China[J].中国地球化学学报,2003,22(2):173-178. |
| |
| 作者姓名： | 王晓燕 王晓峰 王振刚 汪青平 蔡新广 |
| |
| 作者单位： | College of Resource，Environment & Tourism，Capital Normal University，College of Resource，Environment & Tourism，Capital Normal University，College of Resource，Environment & Tourism，Capital Normal University，College of Resource，Environment & Tourism，Capital Normal University，Soil/Water Conservation Station of Miyun County Beijing 100037，China，Beijing 100037，China，Beijing 100037，China，Beijing 100037，China，Beijing 101500，China |
| |
| 基金项目： | GrantedbytheMinistryofEducationandBeijingMunicipalScientificNew StarPlan . |
| |
| 摘 要： | In the Shixia small watershed,twenty experimental plots and two monitoring channels,the residential area and livestock areas were used to monitor the flow,runoff and erosion,Nitrogen and phosphorous concentrations associated with various land uses were analyzed at the same time.The results are presented as follows:(1)TP ,TN and COD concentrations of runoff samples in the residential area and livestock arease are nearly 10 times those in other land-use areas.High nutrient loads are associated with village land use,which is due to unsuitable livestock rising.These areas should be treated as the critical areas of non-point source pollution.(2)Different land use influences intensity the loss nutrients,especially slope tillings in agricultural land.The amount of nutrient loss from agricultural land per unit is highest,that from forestry is intermediated and that frompastures is lowest,However,in consideration of the variability of land-use areas,agricultural land contributes the greatest to TP and forestry land to TN.(3)The concentrations of TN and TP in sediments from gangues are highest ,those in forestry land are intermediate,and those in agricultural land are lowest.Nutrient loss from hilly areas in much greater than from mountainous areas.
|
| 关 键 词： | 土地利用类型 氮 磷 营养损失 北京 农业用地 土壤侵蚀 |
Nutrient loss from various land-use areas in Shixia small watershed of Miyun County,Beijing, China |
| |
| Wang?Xiaoyan,Wang?Xiaofeng,Wang?Zhengang,Wang?Qingping,Cai?Xinguang.Nutrient loss from various land-use areas in Shixia small watershed of Miyun County,Beijing, China[J].Chinese Journal of Geochemistry,2003,22(2):173-178. |
| |
| Authors: | Wang Xiaoyan Wang Xiaofeng Wang Zhengang Wang Qingping Cai Xinguang |
| |
| Institution: | (1) College of Resource, Environment & Tourism, Capital Normal University, 100037 Beijing, China;(2) Soil/Water Conservation Station of Miyun County, 101500 Beijing, China |
| |
| Abstract: | In the Shixia small watershed, twenty experimental plots and two monitoring channels, the residential area and livestock areas were used to monitor the flow, runoff and erosion. Nitrogen and phosphorous concentrations associated with various land uses were analyzed at the same time. The results are presented as follows: (1) TP, TN and COD concentrations of runoff samples in the residential area and livestock areas are nearly 10 times those in other land-use areas. High nutrient loads are associated with village land use, which is due to unsuitable livestock rising. These areas should be treated as the critical areas of non-point source pollution. (2) Different land-use influences intensity the loss of nutrients, especially slope tillings in agricultural land. The amount of nutrient loss from agricultural land per unit is highest, that from forestry is intermediate and that from pastures is lowest. However, in consideration of the variability of land-use areas, agricultural land contributes the greatest to TP and forestry land to TN. (3) The concentrations of TN and TP in sediments from gangues are highest, those in forestry land are intermediate, and those in agricultural land are lowest. Nutrient loss from hilly areas is much greater than from mountainous areas. |
| |
| Keywords: | land-use type nutrient loss Miyun Reservoir Beijing |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
|
