Table 2.

Cost–benefit analysis of mitten crab farming around Hongze Lake. TF trash fish, CF commercial pellet feed (in RMB ha⁻¹year⁻¹). For all values, the means ± SE are given

Cost items	TF (RMB ha−1 year−1)	TF&CF (RMB ha−1 year−1)	CF (RMB ha−1 year−1)
(a) Capital investment
1. Fencing	2979 ± 55	2986 ± 40	3193 ± 83
2. Pump set	1001 ± 85	1018 ± 31	980 ± 57
3. Catchment tool	745 ± 55	790 ± 24	894 ± 65
4. Boats	960 ± 126	1127 ± 76	1374 ± 171
Total	5685 ± 198	5921 ± 104	6441 ± 236
(b) Fixed cost
1. Land lease	12 500 ± 781	12 605 ± 387	12 717 ± 451
2. Deprecation	1137 ± 40	1184 ± 21	1288 ± 47
3. Interest	853 ± 30	888 ± 16	966 ± 35
Total	14 490 ± 791	14 680 ± 382	14 975 ± 452
(c) Operating cost
1. Pond preparation	1568 ± 83	1580 ± 33	1576 ± 56
2. Crab seed	4025 ± 415	3792 ± 215	3222 ± 303
3. Fish fingerling	756 ± 49	650 ± 25	669 ± 36
4. Macrophyte	2562 ± 88	2468 ± 49	2542 ± 75
5. Snails	6033 ± 502	5805 ± 293	6257 ± 201
6. Feed	29 120 ± 2526	26 880 ± 1030	23 474 ± 1268
7. Fuel/electricity charges	1390 ± 66	1311 ± 34	1220 ± 51
Total	45 455 ± 2731	42 487 ± 1191	38 960 ± 1441
(d) Total cost (b+c)	59 947 ± 2873	57 168 ± 1203	53 935 ± 1559
(e) Total revenue	75 949 ± 4533	82 150 ± 2670	78 443 ± 4151
1. Revenue from crab	73 322 ± 4516	79 697 ± 2654	75 911 ± 4160
2. Revenue from fish	2628 ± 114	2453 ± 93	2532 ± 142
(f) Net profit	16 003 ± 2022	24 983 ± 1680	24 509 ± 2926