1703334080
1703334081
67.Patel et al., 2014, 22.
1703334082
1703334083
68.Weis, 2013, 1–2.
1703334084
1703334085
69.Ibid., 126.
1703334086
1703334087
70.Cronon, 1991.
1703334088
1703334089
71.PennState Extension, 2015.
1703334090
1703334091
72.EPA, 2012.
1703334092
1703334093
73.Gerber et al., 2013.
1703334094
1703334095
74.Olson-Sawyer, 2013.
1703334096
1703334097
75.Burbach and Flynn, 1980; Moody, 1988; Rachleff, 1993.
1703334098
1703334099
76.Bello, 2009, 39–53.
1703334100
1703334101
77.Robinson, 2013.
1703334102
1703334103
78.Giles, 2017.
1703334104
1703334105
79.Patel et al., 2014.
1703334106
1703334107
80.Araghi, 2013.
1703334108
1703334109
81.Herrero et al., 2017.
1703334110
1703334111
82.IPCC, 2007, 36; 2014.
1703334112
1703334113
83.Moore, 2015, 252.
1703334114
1703334115
84.Fuglie, MacDonald and Ball, 2007; Matuschke, Mishra and Qaim, 2007.
1703334116
1703334117
85.Gurian-Sherman, 2009.
1703334118
1703334119
86.Lobell and Field, 2007.
1703334120
1703334121
87.Peng et al., 2004; Cerri et al., 2007; Kucharik and Serbin 2008; Lobell, Schlenker and Costa-Roberts, 2011; National Research Council, 2011; Challinor et al., 2014; Shindell,2016.
1703334122
1703334123
88.Braconier, Nicoletti and Westmore, 2014.
1703334124
1703334125
6. 廉价的能源
1703334126
1703334127
0.题记：Columbus, 2003, 161.
1703334128
1703334129
1.Bowman et al., 2009.
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