estimation des effets propres des mesures agroenvironnementales ...

Tableau 5.22 – Résultats des estimations de l’effet de la MAE 1993(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)STH 1769.46 ∗∗∗ 1685.73 ∗∗∗ 1526.31 ∗∗∗ 1508.28 ∗∗∗ -448.51 2360.58 ∗∗∗ -670.09 ∗∗∗ 2360.44 ∗∗∗ 1398.20 1770.79(139.57) (112.73) (149.16) (190.05) (561.97) (284.30) (188.45) (219.90) (3421.94) (2380.96)STH (%) .03 ∗∗∗ .009 .04 ∗∗∗ .03 ∗∗∗ .05 ∗∗∗ .03 ∗∗∗ .05 ∗∗∗ .03 ∗∗∗ .07 .04(.008) (.007) (.009) (.007) (.01) (.008) (.01) (.005) (.27) (.12)SCOP -316.84 ∗∗∗ -177.52 ∗∗∗ -248.86 ∗∗∗ -96.54 -1368.98 ∗∗∗ -241.86 ∗∗∗ -1224.45 ∗∗∗ -246.98 ∗∗∗ -1448.22 -232.02(84.63) (55.41) (85.38) (60.27) (185.45) (60.22) (122.66) (46.32) (1925.72) (746.84)SCOP (%) -.06 ∗∗∗ -.03 ∗∗∗ -.07 ∗∗∗ -.04 ∗∗∗ -.09 ∗∗∗ -.04 ∗∗∗ -.09 ∗∗∗ -.05 ∗∗∗ -.12 -.04(.008) (.006) (.007) (.005) (.01) (.005) (.007) (.003) (.18) (.08)Pr.artif. 48.03 ∗∗∗ -48.59 ∗ 67.46 ∗∗∗ -52.72 ∗ -28.43 39.59 -1.67 -1.02 175.71 354.80(18.53) (25.35) (18.27) (28.41) (38.14) (54.24) (19.79) (28.52) (741.81) (1371.95)Pr.artif. (%) .0009 -.008 ∗∗ .003 -.006 .0007 .007 .003 -.0008 .01 .02(.003) (.004) (.003) (.004) (.005) (.007) (.003) (.005) (.09) (.15)Fourrage 12.90 62.55 ∗∗∗ 16.28 67.20 ∗∗∗ -77.90 ∗∗ 56.44 ∗∗ -71.32 ∗∗ 97.08 ∗∗∗ -61.24 37.56(20.44) (16.64) (34.07) (16.58) (32.77) (27.15) (28.50) (23.52) (523.25) (234.37)Fourrage (%) -.003 .006 ∗∗∗ -.002 .005 ∗∗ -.004 .0002 -.003 .003 -.007 -.002(.002) (.002) (.003) (.002) (.003) (.002) (.003) (.002) (.05) (.03)Pr.temp. 259.02 ∗∗∗ 308.03 ∗∗∗ 247.48 ∗∗∗ 209.47 ∗∗∗ -204.35 -105.31 96.29 291.01 ∗∗∗ -192.12 56.71(72.55) (66.31) (69.49) (55.39) (163.39) (186.31) (64.04) (69.99) (2812.56) (2128.74)Pr.temp. (%) -.04 ∗∗∗ .02 ∗∗ -.03 ∗∗∗ .01 -.007 -.03 ∗∗∗ .007 -.01 -.05 -.03(.01) (.009) (.01) (.009) (.009) (.009) (.007) (.008) (.20) (.26)SAU 2073.45 ∗∗∗ 1939.69 ∗∗∗ 1818.89 ∗∗∗ 1755.84 ∗∗∗ -692.94 2670.51 ∗∗∗ -932.96 ∗∗∗ 2690.95 ∗∗∗ 1481.43 1972.86(174.88) (131.03) (173.06) (197.38) (595.96) (328.20) (242.69) (225.81) (4824.28) (3024.22)Chargement .94 ∗∗∗ 1.69 ∗∗∗ .97 ∗∗∗ 1.65 ∗∗∗ -.21 .99 ∗∗∗ -.23 1.03 ∗∗∗ .87 1.22(.09) (.11) (.09) (.11) (.58) (.19) (.57) (.18) (5.73) (5.34)Note : Les estimateurs sont décrits dans le tableau 3.1. Les écart-types apparaissent entre parenthèses. Les symboles ∗∗∗ (resp.∗∗, ∗) indiquent une significativité auseuil de 1% (resp. 5%, 10%).Source : Calculs des auteurs.5.5 L’effet des mesures herbagères sur les prairies