生计多样化背景下种植业非点源污染负荷演变

钟建兵, 邵景安, 杨玉竹

Characteristics of non-point source pollution load of crop farming undergoing the background of livelihood diversification

Jianbing ZHONG, Jing'an SHAO, Yuzhu YANG

表6 研究区不同农户类型种植业产污负荷随主导生计类型转向的演变特征(t)

Tab. 5 The evolution of pollution load produced by planting under the different farmers' livelihood types, associated with the change of leading livelihood types in the study sites

农户类型 主导生计类型 总负荷量 TN TP 劳动力家庭 农业主导生计 14.46~13.63 9.73~9.98 4.73~3.64 兼业转向生计 11.09~10.29 8.04~7.45 3.05~2.84 非农主导生计 8.83~4.05 7.13~1.65 1.70~2.39 半劳动力家庭 农业主导生计 1.99~1.88 1.34~1.38 0.65~0.50 兼业转向生计 1.58~1.53 1.10~1.06 0.48~0.47 非农主导生计 1.22~0.56 0.98~0.23 0.23~0.33 无劳动力家庭 农业主导生计 0.76~0.71 0.51~0.52 0.25~0.19 兼业转向生计 0.56~0.46 0.44~0.37 0.11~0.09 非农主导生计 0.46~0.21 0.37~0.09 0.09~0.13