TABLE 4.
F-value and determination coefficient (R2, in parenthesis) for the regression analyses with foliage mass remaining rate (percent initial mass/month) as response variables and soil or water physiochemistry as predictor variables for the different experimental treatments over the 1-year experiment.
| Foliage types | Experimental treatment |
First (0–180 days) |
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| T (°C) | WC (μS⋅m–1) | pH | DO (mg⋅L–1) | ||
| A | CK | +18.81***0.461 | 0.26(0.012) | +5.02*(0.186) | |
| SF | +19.05***(0.464) | −38.5***(0.636) | −15.97**(0.421) | −29.07***(0.569) | |
| DF | +18.15***(0.452) | −44.07***(0.667) | −66.12***(0.750) | −22.83***(0.509) | |
| B | CK | +12.91**(0.370) | 0.96(0.042) | 3.83(0.148) | |
| SF | +18.55***(0.457) | −32.1***(0.593) | −14.13**(0.391) | −23.95***(0.521) | |
| DF | +12.38**(0.360) | −39.2***(0.641) | −42.16***(0.657) | −14.92**(0.404) | |
| C | CK | +11.98**(0.352) | 1.63(0.069) | 3.37(0.133) | |
| SF | +19.21***(0.466) | −35.99***(0.621) | −15.08**(0.407) | −27.3***(0.554) | |
| DF | +10.85**(0.330) | −36.44***(0.624) | −38.53***(0.637) | −15.09**(0.407) | |
| Foliage types | Experimental treatment |
Second (180–360 days) |
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| T(°C) | WC (μS⋅m–1) | pH | DO (mg⋅L–1) | ||
| A | CK | 2.92(0.117) | 0.03(0.001) | 0.30(0.013) | |
| SF | 0.33(0.015) | +12.12**(0.355) | +4.56*(0.172) | +12.44**(0.361) | |
| DF | 3.25(0.129) | +14.13**(0.391) | +18.87***(0.462) | +10.82**(0.330) | |
| SF-CK | 0.06(0.003) | 0.37(0.016) | 0.05(0.002) | ||
| DF-CK | 0.15(0.007) | 0.1(0.005) | 0.21(0.01) | ||
| B | CK | 2.02(0.084) | 0.17(0.008) | <0.001 | |
| SF | 0.36(0.016) | +17.09***(0.437) | 0.108(0.005) | +13.89**(0.387) | |
| DF | −6.16*(0.219) | +26.13***(0.543) | +12.53**(0.358) | +22.7***(0.508) | |
| SF-CK | 1.33(0.057) | 0.03(0.001) | 1.85(0.078) | 0.13(0.006) | |
| DF-CK | 0.04(0.002) | <0.01 | 0.55(0.024) | 3.12(0.124) | |
| C | CK | 2.42(0.099) | <0.001 | 0.05(0.002) | |
| SF | 0.03(0.001) | +9.48**(0.301) | 0.05(0.002) | +7.64*(0.258) | |
| DF | 1.36(0.058) | +7.65*(0.258) | +9.14**(0.293) | +6.23*(0.221) | |
| SF-CK | <0.001 | 0.169(0.007) | 0.9(0.039) | ||
| DF-CK | 0.03(0.001) | 0.44(0.019) | 0.19(0.008) | ||
Significantly positive and negative relationships are indicated by (+) and (−), respectively. A: Taxodium distichum; B: Salix matsudana; C: Mixtures. First: the first half of the year (0–180 days); Second: the second half of the year (180–360 days); T, temperature; WC, water conductivity; DO, dissolved oxygen. *P < 0.05, **P < 0.01, ***P < 0.001.